Publications

Peer-Reviewed

Thesis

Antonios Liapis: "Searching for Sentient Design Tools for Game Development," PhD thesis, Center for Computer Games, IT University of Copenhagen, Copenhagen, Denmark, 2014. PDF BibTex

@phdthesis{liapis2014thesis,
author = {Antonios Liapis},
title = {Searching for Sentient Design Tools for Game Development},
school = {Center for Computer Games, IT University of Copenhagen, Copenhagen, Denmark},
year = {2014},
}

Book Chapters

Antonios Liapis: "Artificial Intelligence for Designing Games," In The Handbook of Artificial Intelligence and the Arts, Penousal Machado, Juan Romero, and Gary Greenfield (Eds.). Springer, 2021. (in print) PDF HTML BibTex

@incollection{liapis2021chapter,
author={Antonios Liapis},
title={Artificial Intelligence for Designing Games},
booktitle={The Handbook of Artificial Intelligence and the Arts},
editor={Penousal Machado and Juan Romero and Gary Greenfield},
publisher={Springer},
year={2021},
note={in print},
}

Noor Shaker, Antonios Liapis, Julian Togelius, Ricardo Lopes and Rafael Bidarra: "Constructive Generation Methods for Dungeons and Levels," In Procedural Content Generation in Games: A Textbook and an Overview of Current Research, Noor Shaker, Julian Togelius and Mark J. Nelson (Eds.). Springer, 2016. PDF HTML BibTex

@incollection{shaker2016constructive,
author={Shaker, Noor and Liapis, Antonios and Togelius, Julian and Lopes, Ricardo and Bidarra, Rafael},
title={Constructive Generation Methods for Dungeons and Levels},
booktitle={Procedural Content Generation in Games: A Textbook and an Overview of Current Research},
editor={Shaker, Noor and Togelius, Julian and Nelson, Mark J.},
pages={31--55},
publisher={Springer},
year={2016}
}

Antonios Liapis, Gillian Smith and Noor Shaker: "Mixed-initiative Content Creation," In Procedural Content Generation in Games: A Textbook and an Overview of Current Research, Noor Shaker, Julian Togelius and Mark J. Nelson (Eds.). Springer, 2016. PDF HTML BibTex

@incollection{liapis2016mixedinitiative,
author={Liapis, Antonios and Smith, Gillian and Shaker, Noor},
title={Mixed-initiative Content Creation},
booktitle={Procedural Content Generation in Games: A Textbook and an Overview of Current Research},
editor={Shaker, Noor and Togelius, Julian and Nelson, Mark J.},
pages={195--214},
publisher={Springer},
year={2016}
}

Journal Papers

Konstantinos Makantasis, Kosmas Pinitas, Antonios Liapis and Georgios N. Yannakakis: "From the Lab to the Wild: Affect Modeling via Privileged Information," in IEEE Transactions on Affective Computing 15(2), 2024. PDF BibTex

@article{makantasis2024priviledged,
author={Konstantinos Makantasis and Kosmas Pinitas and Antonios Liapis and Georgios N. Yannakakis},
title={From the Lab to the Wild: Affect Modeling via Privileged Information},
journal={IEEE Transactions on Affective Computing},
volume={15},
number={2},
year={2024},
}

Johannes Pfau, Antonios Liapis, Georgios N. Yannakakis and Rainer Malaka: "Dungeons & Replicants II: Automated Game Balancing Across Multiple Difficulty Dimensions via Deep Player Behavior Modeling," in IEEE Transactions on Games 15(2), 2023. PDF BibTex

@article{pfau2023dungeon,
author={Johannes Pfau and Antonios Liapis and Georgios N. Yannakakis and Rainer Malaka},
title={{Dungeons \& Replicants II: Automated} Game Balancing Across Multiple Difficulty Dimensions via Deep Player Behavior Modeling},
journal={IEEE Transactions on Games},
volume={15},
number={2},
year={2023},
}

Konstantinos Makantasis, Antonios Liapis and Georgios N. Yannakakis: "The Pixels and Sounds of Emotion: General-Purpose Representations of Arousal in Games," in IEEE Transactions on Affective Computing 14(1), 2023. PDF BibTex

@article{makantasis2023pixelssounds,
author={Konstantinos Makantasis and Antonios Liapis and Georgios N. Yannakakis},
title={The Pixels and Sounds of Emotion: General-Purpose Representations of Arousal in Games},
journal={IEEE Transactions on Affective Computing},
volume={14},
number={1},
year={2023},
}

Matthew Barthet, Antonios Liapis and Georgios N. Yannakakis: "Open-Ended Evolution for Minecraft Building Generation," in IEEE Transactions on Games 15(4), 2022. PDF BibTex

@article{barthet2022openended,
author={Matthew Barthet and Antonios Liapis and Georgios N. Yannakakis},
title={Open-Ended Evolution for {Minecraft} Building Generation},
journal={IEEE Transactions on Games},
volume={15},
number={4},
year={2022},
}

David Melhart, Antonios Liapis and Georgios N. Yannakakis: "The Arousal video Game AnnotatIoN (AGAIN) Dataset," in IEEE Transactions on Affective Computing 13(4), 2022. PDF BibTex

@article{melhart2022again,
author={David Melhart and Antonios Liapis and Georgios N. Yannakakis},
title={The {Arousal video Game AnnotatIoN (AGAIN)} Dataset},
journal={IEEE Transactions on Affective Computing},
volume={13},
number={4},
year={2022},
}

Marvin Zammit, Iro Voulgari, Antonios Liapis and Georgios N. Yannakakis: "Learn to Machine Learn via Games in the Classroom," in Frontiers in Education, vol. 7, 2022. PDF HTML BibTex

@article{zammit2022learn,
author={Marvin Zammit and Iro Voulgari and Antonios Liapis and Georgios N. Yannakakis},
title={Learn to Machine Learn via Games in the Classroom},
journal={Frontiers in Education},
volume={7},
year={2022},
}

Konstantinos Sfikas and Antonios Liapis: "Playing Against the Board: Rolling Horizon Evolutionary Algorithms Against Pandemic," in IEEE Transactions on Games 14(3), 2021. PDF BibTex

@article{sfikas2021againstpandemic,
author={Konstantinos Sfikas and Antonios Liapis},
title={Playing Against the Board: Rolling Horizon Evolutionary Algorithms Against Pandemic},
journal={IEEE Transactions on Games},
volume={14},
number={3},
year={2021},
}

Panagiotis Migkotzidis and Antonios Liapis: "SuSketch: Surrogate Models of Gameplay as a Design Assistant," in IEEE Transactions on Games 14(2), pp. 273-283. 2021. [Runner-up for Best of ToG Award at IEEE CoG 2024] PDF BibTex

@article{migkotzidis2021susketch,
author={Panagiotis Migkotzidis and Antonios Liapis},
title={SuSketch: Surrogate Models of Gameplay as a Design Assistant},
journal={IEEE Transactions on Games},
volume={14},
number={2},
pages={273-283},
year={2021},
}

David Melhart, Georgios N. Yannakakis and Antonios Liapis: "I Feel I Feel You: A Theory of Mind Experiment in Games," in Kunstliche Intelligenz, vol. 34, pp. 45–55. Springer, 2020. PDF BibTex

@article{melhart2020ifeelifeelyou,
author = {David Melhart and Georgios N. Yannakakis and Antonios Liapis},
title = {I Feel I Feel You: A Theory of Mind Experiment in Games},
journal = {K\"{u}nstliche Intelligenz},
volume = {34},
pages={45-55},
publisher = {Springer},
year = {2020},
}

Ahmed Dahroug, Andreas Vlachidis, Antonios Liapis, Antonis Bikakis, Martin Lopez-Nores, Owen Sacco and Jose Juan Pazos-Arias: "Using Dates as Contextual Information for Personalized Cultural Heritage Experiences," in SAGE Journal of Information Science 47(1), pp. 82-100, 2021. PDF BibTex

@article{dahroug2021dates,
author = {Ahmed Dahroug and Andreas Vlachidis and Antonios Liapis and Antonis Bikakis and Martin Lopez-Nores and Owen Sacco and Jose Juan Pazos-Arias},
title = {Using Dates as Contextual Information for Personalized Cultural Heritage Experiences},
journal = {SAGE Journal of Information Science},
volume = {47},
number = {1},
year = {2021},
pages = {82-100},
url = {https://doi.org/10.1177/0165551519871823},
}

Daniel Karavolos, Antonios Liapis and Georgios N. Yannakakis: "A Multi-Faceted Surrogate Model for Search-based Procedural Content Generation," in Transactions on Games, vol. 13, no 1, pp. 11-22, 2021. PDF BibTex

@article{karavolos2021multifaceted,
author = {Daniel Karavolos and Antonios Liapis and Georgios N. Yannakakis},
title = {A Multi-Faceted Surrogate Model for Search-based Procedural Content Generation},
journal = {IEEE Transactions on Games},
year = {2021},
volume = {13},
number = {1},
pages = {11-22},
}

Daniele Gravina, Antonios Liapis and Georgios N. Yannakakis: "Quality Diversity Through Surprise," in Transactions on Evolutionary Computation, vol. 23, no 4, pp. 603-616, 2019. PDF BibTex

@article{gravina2019qualitydiversity,
author = {Daniele Gravina and Antonios Liapis and Georgios N. Yannakakis},
title = {Quality Diversity Through Surprise},
journal = {IEEE Transactions on Evolutionary Computation},
volume={23},
number={4},
pages={603-616},
year = {2019},
}

Antonios Liapis, Georgios N. Yannakakis, Mark J. Nelson, Mike Preuss and Rafael Bidarra: "Orchestrating Game Generation," in Transactions on Games, vol. 11, no 1, pp. 48-68, 2019. PDF HTML BibTex

@article{liapis2019orchestrating,
author = {Antonios Liapis and Georgios N. Yannakakis and Mark J. Nelson and Mike Preuss and Rafael Bidarra},
journal={IEEE Transactions on Games},
title={Orchestrating Game Generation},
year={2019},
volume={11},
number={1},
pages={48-68},
}

Gabriella A. B. Barros, Michael Cerny Green, Antonios Liapis and Julian Togelius: "Who Killed Albert Einstein? From Open Data to Murder Mystery Games," in Transactions on Games, vol. 11, no 1, pp. 79-89, 2019. PDF BibTex

@article{barros2018einstein,
author = {Gabriella A. B. Barros and Michael Cerny Green and Antonios Liapis and Julian Togelius},
title = {Who Killed {Albert Einstein}? From Open Data to Murder Mystery Games},
journal = {IEEE Transactions on Games},
year={2019},
volume={11},
number={1},
pages={79-89},
}

Christoffer Holmgard, Michael Cerny Green, Antonios Liapis and Julian Togelius: "Automated Playtesting with Procedural Personas through MCTS with Evolved Heuristics," IEEE Transactions on Games, vol. 11, no. 4, pp. 352-362, 2019. PDF BibTex

@article{holmgard2019evolvedmcts,
author = {Christoffer Holmg{\aa}rd and Michael Cerny Green and Antonios Liapis and Julian Togelius},
title = {Automated Playtesting with Procedural Personas through {MCTS} with Evolved Heuristics},
journal = {IEEE Transactions on Games},
volume = {11},
number = {4},
pages = {352-362},
year = {2019},
}

Phil Lopes, Antonios Liapis and Georgios N. Yannakakis: "Modelling Affect for Horror Soundscapes," IEEE Transactions on Affective Computing, vol. 10, no 2, pp. 209-222, 2019. PDF BibTex

@article{lopes2019modelingsoundscapes,
author = {Phil Lopes and Antonios Liapis and Georgios N. Yannakakis},
title = {Modelling Affect for Horror Soundscapes},
journal = {IEEE Transactions on Affective Computing},
volume={10},
number={2},
pages={209-222},
year = {2017},
}

Antonios Liapis, Georgios N. Yannakakis, Constantine Alexopoulos and Phil Lopes: "Can Computers Foster Human Users' Creativity? Theory and Praxis of Mixed-Initiative Co-Creativity," Digital Culture & Education (DCE), 8 (2). 2016. PDF HTML BibTex

@article{liapis2016canmixedinitiative,
author = {Antonios Liapis and Georgios N. Yannakakis and Constantine Alexopoulos and Phil Lopes},
title = {Can Computers Foster Human Users' Creativity? Theory and Praxis of Mixed-Initiative Co-Creativity},
journal = {Digital Culture \& Education (DCE)},
volume={8},
number={2},
pages={136-152},
year = {2016},
}

Christoffer Holmgard, Antonios Liapis, Julian Togelius and Georgios N. Yannakakis: "Evolving Models of Player Decision Making: Personas versus Clones," Entertainment Computing. Elsevier Volume 16, 2016, pp. 95–104. PDF BibTex

@article{holmgard2015evolving,
author = {Christoffer Holmg{\aa}rd and Antonios Liapis and Julian Togelius and Georgios N. Yannakakis },
title = {Evolving Models of Player Decision Making: Personas versus Clones},
journal = {Entertainment Computing},
volume = {16},
pages = {95-104},
publisher = {Elsevier},
year = {2016},
}

Antonios Liapis, Georgios N. Yannakakis and Julian Togelius: "Constrained Novelty Search: A Study on Game Content Generation," Evolutionary Computation 21(1), 2015, pp. 101-129. PDF BibTex

@article{liapis2015ecj,
author = {Antonios Liapis and Georgios N. Yannakakis and Julian Togelius},
title = {Constrained Novelty Search: A Study on Game Content Generation},
journal = {Evolutionary Computation},
volume = {23},
number = {1},
pages = {101-129},
year = {2015},
}

Antonios Liapis, Georgios N. Yannakakis and Julian Togelius: "Adapting Models of Visual Aesthetics for Personalized Content Creation," IEEE Transactions on Computational Intelligence and AI in Games 4(3), 2012, pp. 213-228. PDF BibTex

@article{liapis2012adaptivemodel,
author = {Antonios Liapis and Georgios N. Yannakakis and Julian Togelius},
title = {Adapting Models of Visual Aesthetics for Personalized Content Creation},
journal = {IEEE Transactions on Computational Intelligence and AI in Games},
year = {2012},
volume={4},
number={3},
pages={213-228},
}

Conference Papers

Kosmas Pinitas, Nemanja Rasajski, Matthew Barthet, Maria Kaselimi, Konstantinos Makantasis, Antonios Liapis, Georgios N. Yannakakis: "Varying the Context to Advance Affect Modelling: A Study on Game Engagement Prediction," in Proceedings of the International Conference on Affective Computing and Intelligent Interaction, 2024. PDF BibTex

@inproceedings{pinitas2024context,
author={Kosmas Pinitas and Nemanja Rasajski and Matthew Barthet and Maria Kaselimi and Konstantinos Makantasis and Antonios Liapis and Georgios N. Yannakakis},
title={Varying the Context to Advance Affect Modelling: A Study on Game Engagement Prediction},
booktitle={Proceedings of the International Conference on Affective Computing and Intelligent Interaction},
year={2024},
}

Roberto Gallotta, Antonios Liapis, Georgios N. Yannakakis: "Consistent Game Content Creation via Function Calling for Large Language Models," in Proceedings of the IEEE Conference on Games, 2024. PDF BibTex

@inproceedings{gallotta2024consistent,
author={Roberto Gallotta and Antonios Liapis and Georgios N. Yannakakis},
title={Consistent Game Content Creation via Function Calling for {L}arge {L}anguage {M}odels},
booktitle={Proceedings of the IEEE Conference on Games},
year={2024},
}

Marvin Zammit, Antonios Liapis, Georgios N. Yannakakis: "MAP-Elites with Transverse Assessment for Multimodal Problems in Creative Domains," in Proceedings of the International Conference on Computational Intelligence in Music, Sound, Art and Design (EvoMusArt), 2024. PDF BibTex

@inproceedings{zammit2024melita,
author={Marvin Zammit and Antonios Liapis and Georgios N. Yannakakis},
title={{MAP-Elites} with Transverse Assessment for Multimodal Problems in Creative Domains},
booktitle={Proceedings of the International Conference on Computational Intelligence in Music, Sound, Art and Design (EvoMusArt)},
year={2024},
}

Kosmas Pinitas, David Renaudie, Mike Thomsen, Matthew Barthet, Konstantinos Makantasis, Antonios Liapis, Georgios N. Yannakakis: "Predicting Player Engagement in Tom Clancy's The Division 2: A Multimodal Approach via Pixels and Gamepad Actions," in Proceedings of the 25th ACM International Conference on Multimodal Interaction, 2023. PDF BibTex

@inproceedings{pinitas2023massive,
author={Kosmas Pinitas and David Renaudie and Mike Thomsen and Matthew Barthet and Konstantinos Makantasis and Antonios Liapis and Georgios N. Yannakakis},
title={Predicting Player Engagement in Tom Clancy's The Division 2: A Multimodal Approach via Pixels and Gamepad Actions},
booktitle={Proceedings of the 25th ACM International Conference on Multimodal Interaction},
year={2023},
}

Emmanouil Xylakis, Ali Najm, Despina Michael-Grigoriou, Antonios Liapis and Georgios N. Yannakakis: "Eliciting and Annotating Emotion in Virtual Spaces," in Proceedings of the 41st Education and Research in Computer Aided Architectural Design in Europe (eCAADe) Conference, 2023. PDF BibTex

@inproceedings{xylakis2023eliciting,
author={Emmanouil Xylakis and Ali Najm and Despina Michael-Grigoriou and Antonios Liapis and Georgios N. Yannakakis},
title={Eliciting and Annotating Emotion in Virtual Spaces},
booktitle={Proceedings of the 41st Education and Research in Computer Aided Architectural Design in Europe (eCAADe) Conference},
year={2023},
}

Konstantinos Sfikas, Antonios Liapis, Joel Hilmersson, Jeg Dudley, Edoardo Tibuzzi and Georgios N. Yannakakis: "Design Space Exploration of Shell Structures Using Quality Diversity Algorithms," in Proceedings of the International Association for Shell and Spatial Structures Symposium, 2023. PDF BibTex

@inproceedings{sfikas2023shell,
author={Konstantinos Sfikas and Antonios Liapis and Joel Hilmersson and Jeg Dudley and Edoardo Tibuzzi and Georgios N. Yannakakis},
title={Design Space Exploration of Shell Structures Using Quality Diversity Algorithms},
booktitle={Proceedings of the International Association for Shell and Spatial Structures Symposium},
year={2023},
}

Antonios Liapis and Alena Denisova: "The Challenge of Evaluating Player Experience in Tabletop Role-Playing Games," in Proceedings of the International Conference on the Foundations of Digital Games, 2023. PDF HTML BibTex

@inproceedings{liapis2023playerexperience,
author={Antonios Liapis and Alena Denisova},
title={The Challenge of Evaluating Player Experience in Tabletop Role-Playing Games},
booktitle={Proceedings of the International Conference on the Foundations of Digital Games},
year={2023},
}

Paris Mavromoustakos-Blom, David Melhart, Antonios Liapis, Georgios N. Yannakakis, Sander Bakkes and Pieter Spronck: "Multiplayer Tension In the Wild: A Hearthstone Case," in Proceedings of the International Conference on the Foundations of Digital Games, 2023. PDF BibTex

@inproceedings{mavromoustakos2023hearthstone,
author={Paris Mavromoustakos-Blom and David Melhart and Antonios Liapis and Georgios N. Yannakakis and Sander Bakkes and Pieter Spronck},
title={Multiplayer Tension In the Wild: A Hearthstone Case},
booktitle={Proceedings of the International Conference on the Foundations of Digital Games},
year={2023},
}

Kosmas Pinitas, Konstantinos Makantasis, Antonios Liapis and Georgios N. Yannakakis: "Supervised Contrastive Learning for Affect Modelling," in Proceedings of the International Conference on Multimodal Interfaces, 2022. PDF BibTex

@inproceedings{pinitas2022supervisedcontrastive,
author={Kosmas Pinitas and Konstantinos Makantasis and Antonios Liapis and Georgios N. Yannakakis},
title={Supervised Contrastive Learning for Affect Modelling},
booktitle={Proceedings of the International Conference on Multimodal Interfaces},
year={2022},
}

Matthew Barthet, Ahmed Khalifa, Antonios Liapis and Georgios N. Yannakakis: "Play with Emotion: Affect-Driven Reinforcement Learning," in Proceedings of the International Conference on Affective Computing and Intelligent Interaction, 2022. PDF BibTex

@inproceedings{barthet2022affectrl,
author={Matthew Barthet and Ahmed Khalifa and Antonios Liapis and Georgios N. Yannakakis},
title={Play with Emotion: Affect-Driven Reinforcement Learning},
booktitle={Proceedings of the International Conference on Affective Computing and Intelligent Interaction},
year={2022},
}

Matthew Barthet, Ahmed Khalifa, Antonios Liapis and Georgios N. Yannakakis: "Generative Personas That Behave and Experience Like Humans," in Proceedings of the Foundations on Digital Games Conference, 2022. PDF BibTex

@inproceedings{barthet2022personas,
author={Matthew Barthet and Ahmed Khalifa and Antonios Liapis and Georgios N. Yannakakis},
title={Generative Personas That Behave and Experience Like Humans},
booktitle={Proceedings of the Foundations on Digital Games Conference},
year={2022},
}

Chintan Trivedi, Konstantinos Makantasis, Antonios Liapis and Georgios N. Yannakakis: "Game State Learning via Game Scene Augmentation," in Proceedings of the Foundations on Digital Games Conference, 2022. PDF BibTex

@inproceedings{trived2022gameaugmentation,
author={Chintan Trivedi and Konstantinos Makantasis and Antonios Liapis and Georgios N. Yannakakis},
title={Game State Learning via Game Scene Augmentation},
booktitle={Proceedings of the Foundations on Digital Games Conference},
year={2022},
}

Chintan Trivedi, Konstantinos Makantasis, Antonios Liapis and Georgios N. Yannakakis: "Learning Task-Independent Game State Representations from Unlabeled Images," in Proceedings of the IEEE Conference on Games, 2022. PDF BibTex

@inproceedings{trivedi2022representations,
author={Chintan Trivedi and Konstantinos Makantasis and Antonios Liapis and Georgios N. Yannakakis},
title={Learning Task-Independent Game State Representations from Unlabeled Images},
booktitle={Proceedings of the IEEE Conference on Games},
year={2022},
}

Marvin Zammit, Antonios Liapis and Georgios N. Yannakakis: "Seeding Diversity into AI Art," in Proceedings of the International Conference on Computational Creativity, 2022. [Best Student Paper Award] PDF BibTex

@inproceedings{zammit2022seeding,
author={Marvin Zammit and Antonios Liapis and Georgios N. Yannakakis},
title={Seeding Diversity into {AI Art}},
booktitle={Proceedings of the International Conference on Computational Creativity},
year={2022},
}

Kosmas Pinitas, Konstantinos Makantasis, Antonios Liapis and Georgios N. Yannakakis: "RankNEAT: Outperforming Stochastic Gradient Search in Preference Learning Tasks," in Proceedings of the Genetic and Evolutionary Computation Conference, 2022. PDF BibTex

@inproceedings{pinitas2022rankneat,
author={Kosmas Pinitas and Konstantinos Makantasis and Antonios Liapis and Georgios N. Yannakakis},
title={RankNEAT: Outperforming Stochastic Gradient Search in Preference Learning Tasks},
booktitle={Proceedings of the Genetic and Evolutionary Computation Conference},
year={2022},
}

Konstantinos Makantasis, David Melhart, Antonios Liapis and Georgios N. Yannakakis: "Privileged Information for Modeling Affect In The Wild," in Proceedings of the IEEE International Conference on Affective Computing and Intelligent Interaction, 2021. PDF BibTex

@inproceedings{makantasis2021privileged,
author={Konstantinos Makantasis and David Melhart and Antonios Liapis and Georgios N. Yannakakis},
title={Privileged Information for Modeling Affect In The Wild},
booktitle={Proceedings of the IEEE International Conference on Affective Computing and Intelligent Interaction},
year={2021},
}

Emmanouil Xylakis, Antonios Liapis and Georgios N. Yannakakis: "Architectural Form and Affect: A Spatiotemporal Study of Arousal," in Proceedings of the IEEE International Conference on Affective Computing and Intelligent Interaction, 2021. PDF BibTex

@inproceedings{xylakis2021architectural,
author={Emmanouil Xylakis and Antonios Liapis and Georgios N. Yannakakis},
title={Architectural Form and Affect: A Spatiotemporal Study of Arousal},
booktitle={Proceedings of the IEEE International Conference on Affective Computing and Intelligent Interaction},
year={2021},
}

Cristiana Pacheco, David Melhart, Antonios Liapis, Georgios N. Yannakakis and Diego Perez-Liebana: "Trace It Like You Believe It: Time-Continuous Believability Prediction," in Proceedings of the IEEE International Conference on Affective Computing and Intelligent Interaction, 2021. PDF BibTex

@inproceedings{pacheco2021believability,
author={Cristiana Pacheco and David Melhart and Antonios Liapis and Georgios N. Yannakakis and Diego Perez-Liebana},
title={Trace It Like You Believe It: Time-Continuous Believability Prediction},
booktitle={Proceedings of the IEEE International Conference on Affective Computing and Intelligent Interaction},
year={2021},
}

Chintan Trivedi, Antonios Liapis and Georgios N. Yannakakis: "Contrastive Learning of Generalized Game Representations," in Proceedings of the IEEE Conference on Games, 2021. PDF BibTex

@inproceedings{trivedi2021contrastive,
author={Chintan Trivedi and Antonios Liapis and Georgios N. Yannakakis},
title={Contrastive Learning of Generalized Game Representations},
booktitle={Proceedings of the IEEE Conference on Games},
year={2021},
}

David Melhart, Antonios Liapis and Georgios N. Yannakakis: "Towards General Models of Player Experience: A Study Within Genres," in Proceedings of the IEEE Conference on Games, 2021. [Nominated for Best Paper Award] PDF BibTex

@inproceedings{melhart2021genremodels,
author={David Melhart and Antonios Liapis and Georgios N. Yannakakis},
title={Towards General Models of Player Experience: A Study Within Genres},
booktitle={Proceedings of the IEEE Conference on Games},
year={2021},
}

Marvin Zammit, Iro Voulgari, Antonios Liapis and Georgios N. Yannakakis: "The Road to AI Literacy Education: From Pedagogical Needs to Tangible Game Design," in Proceedings of the European Conference on Games Based Learning, 2021. PDF BibTex

@inproceedings{zammit2021road,
author={Marvin Zammit and Iro Voulgari and Antonios Liapis and Georgios N. Yannakakis},
title={The Road to AI Literacy Education: From Pedagogical Needs to Tangible Game Design},
booktitle={Proceedings of the European Conference on Games Based Learning},
year={2021},
}

Iro Voulgari, Marvin Zammit, Elias Stouraitis, Antonios Liapis and Georgios N. Yannakakis: "Learn to Machine Learn: Designing a Game Based Approach for Teaching Machine Learning to Primary and Secondary Education Students," in Proceedings of the ACM Interaction Design and Children (IDC) conference, 2021. PDF BibTex

@inproceedings{voulgari2021learntomachinelearn,
author={Iro Voulgari and Marvin Zammit and Elias Stouraitis and Antonios Liapis and Georgios N. Yannakakis},
title={Learn to Machine Learn: Designing a Game Based Approach for Teaching Machine Learning to Primary and Secondary Education Students},
booktitle={Proceedings of the ACM Interaction Design and Children (IDC) conference},
year={2021},
}

Konstantinos Sfikas, Antonios Liapis and Georgios N. Yannakakis: "Monte Carlo Elites: Quality-Diversity Selection as a Multi-Armed Bandit Problem," in Proceedings of the Genetic and Evolutionary Computation Conference, 2021. PDF BibTex

@inproceedings{sfikas2021montecarloelites,
author={Konstantinos Sfikas and Antonios Liapis and Georgios N. Yannakakis},
title={Monte Carlo Elites: Quality-Diversity Selection as a Multi-Armed Bandit Problem},
booktitle={Proceedings of the Genetic and Evolutionary Computation Conference},
year={2021},
}

Konstantinos Sfikas and Antonios Liapis: "Collaborative Agent Gameplay in the Pandemic Board Game," in Proceedings of the Foundations of Digital Games Conference, 2020. PDF BibTex

@inproceedings{sfikas2020collaborative,
author = {Konstantinos Sfikas and Antonios Liapis},
title = {Collaborative Agent Gameplay in the Pandemic Board Game},
booktitle={Proceedings of the Foundations of Digital Games Conference},
year={2020},
}

Kalliopi Kontiza, Antonios Liapis and Catherine Emma Jones: "Reliving the Experience of Visiting a Gallery: Methods for Evaluating Informal Learning in Games for Cultural Heritage," in Proceedings of the Foundations of Digital Games Conference, 2020. PDF BibTex

@inproceedings{kontiza2020reliving,
author = {Kalliopi Kontiza and Antonios Liapis and Catherine Emma Jones},
title = {Reliving the Experience of Visiting a Gallery: Methods for Evaluating Informal Learning in Games for Cultural Heritage},
booktitle={Proceedings of the Foundations of Digital Games Conference},
year={2020},
}

Jean Michel A. Sarr, Georgios N. Yannakakis, Antonios Liapis, Alassane Bah and Christophe Cambier: "Djehuty: A Mixed-Initiative Handwriting Game for Preschoolers," in Proceedings of the Foundations of Digital Games Conference, 2020. PDF BibTex

@inproceedings{sarr2020djehuty,
author = {Jean Michel A. Sarr and Georgios N. Yannakakis and Antonios Liapis and Alassane Bah and Christophe Cambier},
title = {Djehuty: A Mixed-Initiative Handwriting Game for Preschoolers},
booktitle={Proceedings of the Foundations of Digital Games Conference},
year={2020},
}

Johannes Pfau, Antonios Liapis, Georg Volkmar, Georgios N. Yannakakis and Rainer Malaka: "Dungeons & Replicants: Automated Game Balancing via Deep Player Behavior Modeling," in Proceedings of the IEEE Conference on Games, 2020. [Nominated for Best Paper Award] PDF BibTex

@inproceedings{pfau2020replicants,
author = {Johannes Pfau and Antonios Liapis and Georg Volkmar and Georgios N. Yannakakis and Rainer Malaka},
title = {{Dungeons \& Replicants: Automated} Game Balancing via Deep Player Behavior Modeling},
booktitle={Proceedings of the IEEE Conference on Games},
year={2020},
}

Antonios Liapis, Daniele Gravina, Emil Kastbjerg and Georgios N. Yannakakis: "Modelling the Quality of Visual Creations in Iconoscope," in Proceedings of the 8th International Games and Learning Alliance Conference. Springer, 2019. PDF BibTex

@inproceedings{liapis2019modellingiconoscope,
author = {Antonios Liapis and Daniele Gravina and Emil Kastbjerg and Georgios N. Yannakakis},
title = {Modelling the Quality of Visual Creations in Iconoscope},
booktitle = {Proceedings of the 8th International Games and Learning Alliance Conference},
publisher = {Springer},
year = {2019},
}

Stamatia Savvani and Antonios Liapis: "A Participatory Approach to Redesigning Games for Educational Purposes," in Proceedings of the 8th International Games and Learning Alliance Conference. Springer 2019. PDF BibTex

@inproceedings{savvani2019participatory,
author = {Stamatia Savvani and Antonios Liapis},
title = {A Participatory Approach to Redesigning Games for Educational Purposes},
booktitle = {Proceedings of the 8th International Games and Learning Alliance Conference},
publisher = {Springer},
year = {2019},
}

Konstantinos Makantasis, Antonios Liapis and Georgios N. Yannakakis: "From Pixels to Affect: A Study on Games and Player Experience," in Proceedings of the International Conference on Affective Computing and Intelligent Interaction, 2019. PDF BibTex

@inproceedings{makantasis2019pixels,
author = {Konstantinos Makantasis and Antonios Liapis and Georgios N. Yannakakis},
title = {From Pixels to Affect: A Study on Games and Player Experience},
booktitle = {Proceedings of the International Conference on Affective Computing and Intelligent Interaction},
year = {2019},
}

David Melhart, Antonios Liapis and Georgios N. Yannakakis: "PAGAN: Video Affect Annotation Made Easy," in Proceedings of the International Conference on Affective Computing and Intelligent Interaction, 2019. PDF BibTex

@inproceedings{melhart2019pagan,
author = {David Melhart and Antonios Liapis and Georgios N. Yannakakis},
title = {PAGAN: Video Affect Annotation Made Easy},
booktitle = {Proceedings of the International Conference on Affective Computing and Intelligent Interaction},
year = {2019},
}

Elizabeth Camilleri, Georgios N. Yannakakis, David Melhart and Antonios Liapis: "PyPLT: Python Preference Learning Toolbox," in Proceedings of the International Conference on Affective Computing and Intelligent Interaction, 2019. PDF BibTex

@inproceedings{camilleri2019pyplt,
author = {Elizabeth Camilleri and Georgios N. Yannakakis and David Melhart and Antonios Liapis},
title = {PyPLT: Python Preference Learning Toolbox},
booktitle = {Proceedings of the International Conference on Affective Computing and Intelligent Interaction},
year = {2019},
}

Daniele Gravina, Ahmed Khalifa, Antonios Liapis, Julian Togelius and Georgios N. Yannakakis: "Procedural Content Generation through Quality-Diversity," in Proceedings of the IEEE Conference on Games, 2019. PDF HTML BibTex

@inproceedings{gravina2019pcgqd,
author = {Daniele Gravina and Ahmed Khalifa and Antonios Liapis and Julian Togelius and Georgios N. Yannakakis},
title = {Procedural Content Generation through Quality-Diversity},
booktitle = {Proceedings of the IEEE Conference on Games},
year = {2019},
}

David Melhart, Ahmad Azadvar, Alessandro Canossa, Antonios Liapis and Georgios N. Yannakakis: "Your Gameplay Says It All: Modelling Motivation in Tom Clancy's The Division," in Proceedings of the IEEE Conference on Games, 2019. PDF BibTex

@inproceedings{melhart2019gameplaysays,
author = {David Melhart and Ahmad Azadvar and Alessandro Canossa and Antonios Liapis and Georgios N. Yannakakis},
title = {Your Gameplay Says It All: Modelling Motivation in Tom Clancy's The Division},
booktitle = {Proceedings of the IEEE Conference on Games},
year = {2019},
}

Antonios Liapis: "The Newborn World: Guiding Creativity in a Competitive Storytelling Game," in Proceedings of the IEEE Conference on Games, 2019. PDF BibTex

@inproceedings{liapis2019thenewbornworld,
author = {Antonios Liapis},
title = {The Newborn World: Guiding Creativity in a Competitive Storytelling Game},
booktitle = {Proceedings of the IEEE Conference on Games},
year = {2019},
}

Antonios Liapis, Daniel Karavolos, Konstantinos Makantasis, Konstantinos Sfikas and Georgios N. Yannakakis: "Fusing Level and Ruleset Features for Multimodal Learning of Gameplay Outcomes," in Proceedings of the IEEE Conference on Games, 2019. PDF BibTex

@inproceedings{liapis2019fusing,
author = {Antonios Liapis and Daniel Karavolos and Konstantinos Makantasis and Konstantinos Sfikas and Georgios N. Yannakakis},
title = {Fusing Level and Ruleset Features for Multimodal Learning of Gameplay Outcomes},
booktitle = {Proceedings of the IEEE Conference on Games},
year = {2019},
}

Kalliopi Kontiza, Antonios Liapis and Joseph Padfield: "Capturing the Virtual Movement of Paintings: A Game and A Tool," in Proceedings of the Digital Heritage International Congress (DigitalHeritage), 2018. PDF BibTex

@inproceedings{kontiza2018paintings,
author={Kalliopi Kontiza and Antonios Liapis and Joseph Padfield},
title={Capturing the Virtual Movement of Paintings: A Game and A Tool},
booktitle={Proceedings of the Digital Heritage International Congress (DigitalHeritage)},
year={2018},
}

Michael Cerny Green, Gabriella A. B. Barros, Antonios Liapis and Julian Togelius: "DATA Agent," in Proceedings of the 13th Conference on the Foundations of Digital Games, 2018. PDF BibTex

@inproceedings{green2018dataagent,
author={Michael Cerny Green and Gabriella A. B. Barros and Antonios Liapis and Julian Togelius},
title={DATA Agent},
booktitle={Proceedings of the 13th Conference on the Foundations of Digital Games},
year={2018},
}

Jichen Zhu, Antonios Liapis, Sebastian Risi, Rafael Bidarra and G. Michael Youngblood: "Explainable AI for Designers: A Human-Centered Perspective on Mixed-Initiative Co-Creation," in Proceedings of the IEEE Conference on Computational Intelligence and Games, 2018. PDF HTML BibTex

@inproceedings{zhu2018explainable,
author={Jichen Zhu and Antonios Liapis and Sebastian Risi and Rafael Bidarra and G. Michael Youngblood},
title={Explainable AI for Designers: A Human-Centered Perspective on Mixed-Initiative Co-Creation},
booktitle={Proceedings of the IEEE Conference on Computational Intelligence and Games},
year={2018},
}

Daniel Karavolos, Antonios Liapis and Georgios N. Yannakakis: "Using a Surrogate Model of Gameplay for Automated Level Design," in Proceedings of the IEEE Conference on Computational Intelligence and Games, 2018. PDF BibTex

@inproceedings{karavolos2018surrogate,
author={Daniel Karavolos and Antonios Liapis and Georgios N. Yannakakis},
title={Using a Surrogate Model of Gameplay for Automated Level Design},
booktitle={Proceedings of the IEEE Conference on Computational Intelligence and Games},
year={2018},
}

Gabriella A. B. Barros, Michael Cerny Green, Antonios Liapis and Julian Togelius: "Data-driven Design: A Case for Maximalist Game Design," in Proceedings of the International Conference of Computational Creativity, 2018. [Runner-up Best Student Paper Award] PDF HTML BibTex

@inproceedings{barros2018maximalist,
author = {Gabriella A. B. Barros and Michael Cerny Green and Antonios Liapis and Julian Togelius},
title = {Data-driven Design: A Case for Maximalist Game Design},
booktitle = {Proceedings of the International Conference of Computational Creativity},
year = {2018},
}

Daniele Gravina, Antonios Liapis and Georgios N. Yannakakis: "Fusing Novelty and Surprise for Evolving Robot Morphologies," in Proceedings of the Genetic and Evolutionary Computation Conference, 2018. PDF BibTex

@inproceedings{gravina2018fusing,
author = {Daniele Gravina and Antonios Liapis and Georgios N. Yannakakis},
title = {Fusing Novelty and Surprise for Evolving Robot Morphologies},
booktitle = {Proceedings of the Genetic and Evolutionary Computation Conference},
year = {2018},
}

Antonios Liapis: "Piecemeal Evolution of a first Person Shooter Level," in Applications of Evolutionary Computation. Springer, 2018. PDF BibTex

@incollection{liapis2018piecemeal,
author = {Antonios Liapis},
title = {Piecemeal Evolution of a first Person Shooter Level},
booktitle = {Applications of Evolutionary Computation},
year = {2018},
publisher={Springer},
}

Antonios Liapis: "Recomposing the Pokemon Color Palette," in Applications of Evolutionary Computation. Springer, 2018. PDF BibTex

@incollection{liapis2018pokemon,
author = {Antonios Liapis},
title = {Recomposing the Pok{\'e}mon Color Palette},
booktitle = {Applications of Evolutionary Computation},
year = {2018},
publisher={Springer},
}

Jakub Kowalski, Antonios Liapis and Lukasz Zarczynski: "Mapping Chess Aesthetics onto Procedurally Generated Chess-like Games," in Applications of Evolutionary Computation. Springer, 2018. PDF BibTex

@incollection{kowalski2018mappingchess,
author = {Jakub Kowalski and Antonios Liapis and {\L}ukasz {\.Z}arczy{\'n}ski},
title = {Mapping Chess Aesthetics onto Procedurally Generated Chess-like Games},
booktitle = {Applications of Evolutionary Computation},
year = {2018},
publisher={Springer},
}

Phil Lopes, Georgios N. Yannakakis and Antonios Liapis: "RankTrace: Relative and Unbounded Affect Annotation," In Proceedings of the International Conference on Affective Computing and Intelligent Interaction, 2017. PDF BibTex

@inproceedings{lopes2017ranktrace,
author = {Phil Lopes and Georgios N. Yannakakis and Antonios Liapis},
title = {RankTrace: Relative and Unbounded Affect Annotation},
booktitle = {Proceedings of the International Conference on Affective Computing and Intelligent Interaction},
year = {2017},
}

Elizabeth Camilleri, Georgios N. Yannakakis and Antonios Liapis: "Towards General Models of Player Affect," In Proceedings of the International Conference on Affective Computing and Intelligent Interaction, 2017. PDF BibTex

@inproceedings{camilleri2017generalmodels,
author = {Elizabeth Camilleri and Georgios N. Yannakakis and Antonios Liapis},
title = {Towards General Models of Player Affect},
booktitle = {Proceedings of the International Conference on Affective Computing and Intelligent Interaction},
year = {2017},
}

Owen Sacco, Antonios Liapis and Georgios N. Yannakakis "Game Character Ontology (GCO): A Vocabulary for Extracting and Describing Game Character Information from Web Content," In Proceedings of the International Conference on Semantic Systems, 2017. PDF BibTex

@inproceedings{sacco2017gamecharacterontology,
author = {Owen Sacco and Antonios Liapis and Georgios N. Yannakakis},
title = {Game Character Ontology (GCO): A Vocabulary for Extracting and Describing Game Character Information from Web Content},
booktitle = {Proceedings of the International Conference on Semantic Systems},
year = {2017},
}

Daniele Gravina, Antonios Liapis and Georgios N. Yannakakis: "Coupling Novelty and Surprise for Evolutionary Divergence," In Proceedings of the Genetic and Evolutionary Computation Conference, 2017. PDF BibTex

@inproceedings{gravina2017noveltysurprise,
author = {Daniele Gravina and Antonios Liapis and Georgios N. Yannakakis},
title = {Coupling Novelty and Surprise for Evolutionary Divergence},
booktitle = {Proceedings of the Genetic and Evolutionary Computation Conference},
year = {2017},
}

Antonios Liapis: "Multi-segment Evolution of Dungeon Game Levels," In Proceedings of the Genetic and Evolutionary Computation Conference, 2017. [Linked paper is adapted from the GECCO camera-ready for minor corrections] PDF BibTex

@inproceedings{liapis2017multisegment,
author = {Antonios Liapis},
title = {Multi-segment Evolution of Dungeon Game Levels},
booktitle = {Proceedings of the Genetic and Evolutionary Computation Conference},
year = {2017},
}

Catherine Emma Jones, Antonios Liapis, Ioanna Lykourentzou and Daniele Guido: "Board Game Prototyping to Co-Design a Better Location-Based Digital Game," In Proceedings of the CHI Conference Extended Abstracts on Human Factors in Computing Systems, 2017. PDF BibTex

@inproceedings{jones2017boardgame,
author = {Catherine Emma Jones and Antonios Liapis and Ioanna Lykourentzou and Daniele Guido},
title = {Board Game Prototyping to Co-Design a Better Location-Based Digital Game},
booktitle = {Proceedings of the CHI Conference Extended Abstracts on Human Factors in Computing Systems},
year = {2017},
publisher = {Association for Computing Machinery},
}

Antonios Liapis: "Mixed-initiative Creative Drawing with webIconoscope," In Proceedings of the 6th International Conference on Computational Intelligence in Music, Sound, Art and Design (EvoMusArt), vol. 10198, LNCS. Springer, 2017. PDF BibTex

@incollection{liapis2017webiconoscope,
author = {Antonios Liapis},
title = {Mixed-initiative Creative Drawing with webIconoscope},
booktitle = {Proceedings of the 6th International Conference on Computational Intelligence in Music, Sound, Art and Design. (EvoMusArt)},
year = {2017},
volume={10198, LNCS},
publisher = {Springer},
}

Owen Sacco, Antonios Liapis and Georgios N. Yannakakis: "A Holistic Approach for Semantic-Based Game Generation," in Proceedings of the IEEE Conference on Computational Intelligence and Games (CIG). 2016. PDF HTML BibTex

@inproceedings{sacco2016holistic,
author = {Owen Sacco and Antonios Liapis and Georgios N. Yannakakis},
title = {A Holistic Approach for Semantic-Based Game Generation},
booktitle = {Proceedings of the IEEE Conference on Computational Intelligence and Games (CIG)},
year = {2016},
}

Daniele Gravina, Antonios Liapis and Georgios N. Yannakakis: "Constrained Surprise Search for Content Generation," in Proceedings of the IEEE Conference on Computational Intelligence and Games (CIG). 2016. PDF BibTex

@inproceedings{gravina2016constrainedsurprise,
author = {Daniele Gravina and Antonios Liapis and Georgios N. Yannakakis},
title = {Constrained Surprise Search for Content Generation},
booktitle = {Proceedings of the IEEE Conference on Computational Intelligence and Games (CIG)},
year = {2016},
}

Daniel Karavolos, Antonios Liapis and Georgios N. Yannakakis: "Evolving Missions to Create Game Spaces," in Proceedings of the IEEE Conference on Computational Intelligence and Games (CIG). 2016. PDF BibTex

@inproceedings{karavolos2016evolvingmissions,
author = {Daniel Karavolos and Antonios Liapis and Georgios N. Yannakakis},
title = {Evolving Missions to Create Game Spaces},
booktitle = {Proceedings of the IEEE Conference on Computational Intelligence and Games (CIG)},
year = {2016},
}

Georgios N. Yannakakis and Antonios Liapis: "Searching for Surprise," in Proceedings of the International Conference on Computational Creativity. 2016. PDF BibTex

@inproceedings{yannakakis2016surprise,
author = {Georgios N. Yannakakis and Antonios Liapis},
title = {Searching for Surprise},
booktitle = {Proceedings of the International Conference on Computational Creativity},
year = {2016},
}

Phil Lopes, Antonios Liapis and Georgios N. Yannakakis: "Framing Tension for Game Generation," in Proceedings of the International Conference on Computational Creativity. 2016. PDF BibTex

@inproceedings{lopes2016framing,
author = {Phil Lopes and Antonios Liapis and Georgios N. Yannakakis},
title = {Framing Tension for Game Generation},
booktitle = {Proceedings of the International Conference on Computational Creativity},
year = {2016},
}

Gabriella A. B. Barros, Antonios Liapis and Julian Togelius: "Murder Mystery Generation from Open Data," in Proceedings of the International Conference on Computational Creativity. 2016. PDF BibTex

@inproceedings{barros2016mystery,
author = {Gabriella A. B. Barros and Antonios Liapis and Julian Togelius},
title = {Murder Mystery Generation from Open Data},
booktitle = {Proceedings of the International Conference on Computational Creativity},
year = {2016},
}

Chong-U Lim, Antonios Liapis and D. Fox Harrell: "Discovering Social and Aesthetic Categories of Avatars: A Bottom-Up Artificial Intelligence Approach Using Image Clustering," in Proceedings of the International Joint Conference of DiGRA and FDG. 2016. PDF BibTex

@inproceedings{lim2016avatars,
author = {Chong-U Lim and Antonios Liapis and D. Fox Harrell},
title = {Discovering Social and Aesthetic Categories of Avatars: A Bottom-Up Artificial Intelligence Approach Using Image Clustering},
booktitle = {Proceedings of the International Joint Conference of DiGRA and FDG},
year = {2016},
}

Gabriella A. B. Barros, Antonios Liapis and Julian Togelius: "Playing with Data: Procedural Generation of Adventures from Open Data," in Proceedings of the International Joint Conference of DiGRA and FDG. 2016. PDF BibTex

@inproceedings{barros2016playingdata,
author = {Gabriella A. B. Barros and Antonios Liapis and Julian Togelius},
title = {Playing with Data: Procedural Generation of Adventures from Open Data},
booktitle = {Proceedings of the International Joint Conference of DiGRA and FDG},
year = {2016},
}

Daniele Gravina, Antonios Liapis and Georgios N. Yannakakis: "Surprise Search: Beyond Objectives and Novelty," in Proceedings of the Genetic and Evolutionary Computation Conference. ACM, 2016. PDF BibTex

@inproceedings{gravina2016surprisebeyond,
author = {Daniele Gravina and Antonios Liapis and Georgios N. Yannakakis},
title = {Surprise Search: Beyond Objectives and Novelty},
booktitle = {Proceedings of the Genetic and Evolutionary Computation Conference},
year = {2016},
publisher = {ACM},
}

Antonios Liapis: "Exploring the Visual Styles of Arcade Game Assets," in Proceedings of Evolutionary and Biologically Inspired Music, Sound, Art and Design (EvoMusArt). Springer, 2016. PDF BibTex

@incollection{liapis2016arcade,
author = {Antonios Liapis},
title = {Exploring the Visual Styles of Arcade Game Assets},
booktitle = {Proceedings of Evolutionary and Biologically Inspired Music, Sound, Art and Design (EvoMusArt)},
year = {2016},
publisher = {Springer},
}

Phil Lopes, Antonios Liapis and Georgios N Yannakakis: "Targeting Horror via Level and Soundscape Generation," in Proceedings of the AAAI Artificial Intelligence for Interactive Digital Entertainment Conference, 2015. PDF BibTex

@inproceedings{lopes2015horror,
author = {Phil Lopes and Antonios Liapis and Georgios N. Yannakakis},
title = {Targeting Horror via Level and Soundscape Generation},
booktitle={Proceedings of the AAAI Artificial Intelligence for Interactive Digital Entertainment Conference},
year = {2015},
}

Antonios Liapis and Georgios N. Yannakakis: "Refining the Paradigm of Sketching in AI-Based Level Design," in Proceedings of the AAAI Artificial Intelligence for Interactive Digital Entertainment Conference, 2015. PDF BibTex

@inproceedings{liapis2015refining,
author = {Antonios Liapis and Georgios N. Yannakakis},
title = {Refining the Paradigm of Sketching in AI-Based Level Design},
booktitle={Proceedings of the AAAI Artificial Intelligence for Interactive Digital Entertainment Conference},
year = {2015},
}

William Cachia, Antonios Liapis and Georgios N. Yannakakis: "Multi-Level Evolution of Shooter Levels," in Proceedings of the AAAI Artificial Intelligence for Interactive Digital Entertainment Conference, 2015. PDF BibTex

@inproceedings{cachia2015fps,
author = {William Cachia and Antonios Liapis and Georgios N. Yannakakis},
title = {Multi-Level Evolution of Shooter Levels},
booktitle={Proceedings of the AAAI Artificial Intelligence for Interactive Digital Entertainment Conference},
year = {2015},
}

Antonios Liapis, Amy K. Hoover, Georgios N. Yannakakis, Constantine Alexopoulos and Evangelia V. Dimaraki: "Motivating Visual Interpretations in Iconoscope: Designing a Game for Fostering Creativity," in Proceedings of the 10th Conference on the Foundations of Digital Games, 2015. PDF BibTex

@inproceedings{liapis2015iconoscope,
author = {Antonios Liapis and Amy K. Hoover and Georgios N. Yannakakis and Constantine Alexopoulos and Evangelia V. Dimaraki},
title = {Motivating Visual Interpretations in Iconoscope: Designing a Game for Fostering Creativity},
booktitle = {Proceedings of the 10th Conference on the Foundations of Digital Games},
year = {2015},
}

Antonios Liapis, Christoffer Holmgard, Georgios N. Yannakakis and Julian Togelius: "Procedural Personas as Critics for Dungeon Generation," in Applications of Evolutionary Computation, vol. 9028, LNCS. Springer, 2015. [Best Paper Award of the EvoGAMES track] PDF BibTex

@incollection{liapis2015personacritics,
author = {Antonios Liapis and Christoffer Holmg{\aa}rd and Georgios N. Yannakakis and Julian Togelius},
title = {Procedural Personas as Critics for Dungeon Generation},
booktitle = {Applications of Evolutionary Computation},
volume={9028, LNCS},
year = {2015},
publisher={Springer},
}

Jinhong Zhang, Rasmus Taarnby, Antonios Liapis and Sebastian Risi: "DrawCompileEvolve: Sparking Interactive Evolutionary Art with Human Creations," in Evolutionary and Biologically Inspired Music, Sound, Art and Design (EvoMusArt), vol. 9027, LNCS. Springer, 2015. PDF BibTex

@incollection{zhang2015drawcompileevolve,
author = {Jinhong Zhang and Rasmus Taarnby and Antonios Liapis and Sebastian Risi},
title = {DrawCompileEvolve: Sparking Interactive Evolutionary Art with Human Creations},
booktitle = {Evolutionary and Biologically Inspired Music, Sound, Art and Design (EvoMusArt)},
volume={9027, LNCS},
year = {2015},
publisher={Springer},
}

Amy K. Hoover, William Cachia, Antonios Liapis and Georgios N. Yannakakis: "AudioInSpace: Exploring the Creative Fusion of Generative Audio, Visuals and Gameplay," in Evolutionary and Biologically Inspired Music, Sound, Art and Design (EvoMusArt), vol. 9027, LNCS. Springer, 2015. PDF BibTex

@incollection{hoover2015audioinspace,
author = {Amy K. Hoover and William Cachia and Antonios Liapis and Georgios N. Yannakakis},
title = {AudioInSpace: Exploring the Creative Fusion of Generative Audio, Visuals and Gameplay},
booktitle = {Evolutionary and Biologically Inspired Music, Sound, Art and Design (EvoMusArt)},
volume={9027, LNCS},
year = {2015},
publisher={Springer},
}

Christoffer Holmgard, Antonios Liapis, Julian Togelius and Georgios N. Yannakakis: "Personas versus Clones for Player Decision Modeling," in Proceedings of the International Conference on Entertainment Computing (ICEC), 2014. PDF BibTex

@inproceedings{holmgard2014personasversusclones,
author = {Christoffer Holmg{\aa}rd and Antonios Liapis and Julian Togelius and Georgios N. Yannakakis},
title = {Personas versus Clones for Player Decision Modeling},
booktitle = {Proceedings of the International Conference on Entertainment Computing (ICEC)},
year = {2014},
publisher={Springer},
}

Antonios Liapis, Georgios N. Yannakakis and Julian Togelius: "Designer Modeling for Sentient Sketchbook," in Proceedings of the IEEE Conference on Computational Intelligence and Games (CIG), 2014. [Best Paper Award] PDF BibTex

@inproceedings{liapis2014modelingsketchbook,
author = {Antonios Liapis and Georgios N. Yannakakis and Julian Togelius},
title = {Designer Modeling for Sentient Sketchbook},
booktitle = {Proceedings of the IEEE Conference on Computational Intelligence and Games (CIG)},
year = {2014},
}

Mike Preuss, Antonios Liapis and Julian Togelius: "Searching for Good and Diverse Game Levels," in Proceedings of the IEEE Conference on Computational Intelligence and Games (CIG), 2014. [Nominated for Best Paper Award] PDF BibTex

@inproceedings{preuss2014gooddiverse,
author = {Mike Preuss and Antonios Liapis and Julian Togelius},
title = {Searching for Good and Diverse Game Levels},
booktitle = {Proceedings of the IEEE Conference on Computational Intelligence and Games (CIG)},
year = {2014},
}

Christoffer Holmgard, Antonios Liapis, Julian Togelius and Georgios N. Yannakakis: "Evolving Personas for Player Decision Modeling," in Proceedings of the IEEE Conference on Computational Intelligence and Games (CIG), 2014. PDF BibTex

@inproceedings{holmgard2014evolvingpersonas,
author = {Christoffer Holmg{\aa}rd and Antonios Liapis and Julian Togelius and Georgios N. Yannakakis},
title = {Evolving Personas for Player Decision Modeling},
booktitle = {Proceedings of the IEEE Conference on Computational Intelligence and Games (CIG)},
year = {2014},
}

Antonios Liapis, Georgios N. Yannakakis and Julian Togelius: "Computational Game Creativity," in Proceedings of the fifth International Conference on Computational Creativity, 2014. PDF HTML BibTex

@inproceedings{liapis2014gamecreativity,
author = {Antonios Liapis and Georgios N. Yannakakis and Julian Togelius},
title = {Computational Game Creativity},
booktitle = {Proceedings of the fifth International Conference on Computational Creativity},
year = {2014},
}

Georgios N. Yannakakis, Antonios Liapis and Constantine Alexopoulos: "Mixed-Initiative Co-Creativity," in Proceedings of the 9th Conference on the Foundations of Digital Games, 2014. PDF BibTex

@inproceedings{yannakakis2014micc,
author = {Georgios N. Yannakakis and Antonios Liapis and Constantine Alexopoulos},
title = {Mixed-Initiative Co-Creativity},
booktitle = {Proceedings of the 9th Conference on the Foundations of Digital Games},
year = {2014},
}

Christoffer Holmgard, Antonios Liapis, Julian Togelius and Georgios N. Yannakakis: "Generative Agents for Player Decision Modeling in Games," in Poster Proceedings of the 9th Conference on the Foundations of Digital Games, 2014. PDF BibTex

@inproceedings{holmgard2014generativeagents,
author = {Christoffer Holmg{\aa}rd and Antonios Liapis and Julian Togelius and Georgios N. Yannakakis},
title = {Generative Agents for Player Decision Modeling in Games},
booktitle = {Poster Proceedings of the 9th Conference on the Foundations of Digital Games},
year = {2014},
}

Antonios Liapis, Georgios N. Yannakakis and Julian Togelius: "Towards a Generic Method of Evaluating Game Levels," in Proceedings of the AAAI Conference on Artificial Intelligence and Interactive Digital Entertainment, 2013. [Best Student Paper Award] PDF BibTex

@inproceedings{liapis2013evaluations,
author = {Antonios Liapis and Georgios N. Yannakakis and Julian Togelius},
title = {Towards a Generic Method of Evaluating Game Levels},
booktitle = {Proceedings of the AAAI Artificial Intelligence for Interactive Digital Entertainment Conference},
year = {2013},
}

Antonios Liapis, Hector P. Martinez, Julian Togelius and Georgios N. Yannakakis: "Adaptive Game Level Creation through Rank-based Interactive Evolution," in Proceedings of the IEEE Conference on Computational Intelligence and Games (CIG), 2013. [Nominated for Best Paper Award] PDF BibTex

@inproceedings{liapis2013rie,
author = {Antonios Liapis and H\'{e}ctor P. Mart\'{i}nez and Julian Togelius and Georgios N. Yannakakis},
title = {Adaptive Game Level Creation through Rank-based Interactive Evolution},
booktitle = {Proceedings of the IEEE Conference on Computational Intelligence and Games (CIG)},
year = {2013},
}

Antonios Liapis, Georgios N. Yannakakis and Julian Togelius: "Enhancements to Constrained Novelty Search: Two-Population Novelty Search for Generating Game Content," in Proceedings of the Genetic and Evolutionary Competition Conference, 2013, pp. 343-350. [Best Paper Award of the DETA/Self* track] PDF BibTex

@inproceedings{liapis2013gecco,
author = {Antonios Liapis and Georgios N. Yannakakis and Julian Togelius},
title = {Enhancements to Constrained Novelty Search: Two-Population Novelty Search for Generating Game Content},
booktitle = {Proceedings of the Genetic and Evolutionary Computation Conference},
pages = {343-350},
year = {2013},
}

Antonios Liapis, Hector P. Martinez, Julian Togelius and Georgios N. Yannakakis: "Transforming Exploratory Creativity with DeLeNoX," in Proceedings of the Fourth International Conference on Computational Creativity, 2013, pp. 56-63. PDF BibTex

@inproceedings{liapis2013delenox,
author = {Antonios Liapis and H\'{e}ctor P. Mart\'{i}nez and Julian Togelius and Georgios N. Yannakakis},
title = {Transforming Exploratory Creativity with {DeLeNoX}},
booktitle = {Proceedings of the Fourth International Conference on Computational Creativity},
pages={56-63},
year = {2013},
}

Antonios Liapis, Georgios N. Yannakakis and Julian Togelius: "Sentient Sketchbook: Computer-Aided Game Level Authoring," in Proceedings of the 8th Conference on the Foundations of Digital Games, 2013, pp. 213-220. PDF BibTex

@inproceedings{liapis2013sketchbook,
author = {Antonios Liapis and Georgios N. Yannakakis and Julian Togelius},
title = {Sentient Sketchbook: Computer-Aided Game Level Authoring},
booktitle = {Proceedings of the 8th Conference on the Foundations of Digital Games},
pages={213-220},
year = {2013},
}

Antonios Liapis, Georgios N. Yannakakis and Julian Togelius: "Sentient World: Human-Based Procedural Cartography," in Proceedings of Evolutionary and Biologically Inspired Music, Sound, Art and Design (EvoMusArt), vol. 7834, LNCS. Springer, 2013, pp. 180-191. PDF BibTex

@incollection{liapis2013world,
author = {Antonios Liapis and Georgios N. Yannakakis and Julian Togelius},
title = {Sentient World: Human-Based Procedural Cartography},
booktitle = {Proceedings of Evolutionary and Biologically Inspired Music, Sound, Art and Design (EvoMusArt)},
year = {2013},
volume={7834, LNCS},
pages = {180-191},
publisher = {Springer},
}

Antonios Liapis, Georgios N. Yannakakis and Julian Togelius: "Generating Map Sketches for Strategy Games," in Proceedings of Applications of Evolutionary Computation, vol. 7835, LNCS. Springer, 2013, pp. 264-273. [Linked paper is adapted from the Evo* camera-ready for minor corrections] PDF BibTex

@incollection{liapis2013evo,
author = {Antonios Liapis and Georgios N. Yannakakis and Julian Togelius},
title = {Generating Map Sketches for Strategy Games},
booktitle = {Proceedings of Applications of Evolutionary Computation},
year = {2013},
volume = {7835, LNCS},
pages = {264-273},
publisher = {Springer},
}

Antonios Liapis, Georgios N. Yannakakis and Julian Togelius: "Optimizing Visual Properties of Game Content through Neuroevolution," in Proceedings of the AAAI Conference on Artificial Intelligence and Interactive Digital Entertainment, 2011. PDF BibTex

@inproceedings{liapis2011visualproperties,
author={Antonios Liapis and Georgios N. Yannakakis and Julian Togelius},
title={Optimizing Visual Properties of Game Content Through Neuroevolution},
booktitle={Proceedings of the AAAI Artificial Intelligence for Interactive Digital Entertainment Conference},
year={2011},
}

Antonios Liapis, Georgios N. Yannakakis and Julian Togelius: "Neuroevolutionary Constrained Optimization for Content Creation," in Proceedings of the IEEE Conference on Computational Intelligence and Games (CIG), 2011, pp. 71-78. PDF BibTex

@inproceedings{liapis2011functional,
author={Antonios Liapis and Georgios N. Yannakakis and Julian Togelius},
title={Neuroevolutionary Constrained Optimization for Content Creation},
booktitle={Proceedings of IEEE Conference on Computational Intelligence and Games},
year={2011},
pages={71-78},
}

Workshop Papers

Nemanja Rasajski, Chintan Trivedi, Konstantinos Makantasis, Antonios Liapis, Georgios N. Yannakakis: "BehAVE: Behaviour Alignment of Video Game Encodings," in Proceedings of the ECCV Workshop on Computer Vision For Videogames, 2024. [Best Paper Award] PDF BibTex

@inproceedings{rasajski2024behave,
author={Nemanja Rasajski and Chintan Trivedi and Konstantinos Makantasis and Antonios Liapis and Georgios N. Yannakakis},
title={{BehAVE}: Behaviour Alignment of Video Game Encodings},
booktitle={Proceedings of the ECCV Workshop on Computer Vision For Videogames},
year={2024},
}

Matthew Barthet, Roberto Gallotta, Ahmed Khalifa, Antonios Liapis, Georgios N. Yannakakis: "Affectively Framework: Towards Human-like Affect-Based Agents," in Proceedings of the International Conference on Affective Computing and Intelligent Interaction Workshops and Demos, 2024. PDF BibTex

@inproceedings{barthet2024affectively,
author={Matthew Barthet and Roberto Gallotta and Ahmed Khalifa and Antonios Liapis and Georgios N. Yannakakis},
title={{Affectively Framework}: Towards Human-like Affect-Based Agents},
booktitle={Proceedings of the International Conference on Affective Computing and Intelligent Interaction Workshops and Demos},
year={2024},
}

Emmanouil Xylakis, Antonios Liapis, Georgios N. Yannakakis: "The Scream Stream: Multimodal Affect Analysis of Horror Game Spaces," in Proceedings of the International Conference on Affective Computing and Intelligent Interaction Workshops and Demos, 2024. PDF BibTex

@inproceedings{xylakis2024scream,
author={Emmanouil Xylakis and Antonios Liapis and Georgios N. Yannakakis},
title={The {Scream Stream}: Multimodal Affect Analysis of Horror Game Spaces},
booktitle={Proceedings of the International Conference on Affective Computing and Intelligent Interaction Workshops and Demos},
year={2024},
}

Chintan Trivedi, Konstantinos Makantasis, Antonios Liapis, Georgios N. Yannakakis: "Towards General Game Representations: Decomposing Games Pixels into Content and Style," in Proceedings of the BMVC workshop on Computer Vision for Games and Games for Computer Vision, 2023. PDF BibTex

@inproceedings{trivedi2023decomposing,
author={Chintan Trivedi and Konstantinos Makantasis and Antonios Liapis and Georgios N. Yannakakis},
title={Towards General Game Representations: Decomposing Games Pixels into Content and Style},
booktitle={Proceedings of the BMVC workshop on Computer Vision for Games and Games for Computer Vision},
year={2023},
}

Matthew Barthet, Chintan Trivedi, Kosmas Pinitas, Emmanouil Xylakis, Konstantinos Makantasis, Antonios Liapis, Georgios N. Yannakakis: "Knowing Your Annotator: Rapidly Testing the Reliability of Affect Annotation," in Proceedings of the 11th International Conference on Affective Computing and Intelligent Interaction Workshops and Demos (ACIIW), 2023. PDF BibTex

@inproceedings{barthet2023reliability,
author={Matthew Barthet and Chintan Trivedi and Kosmas Pinitas and Emmanouil Xylakis and Konstantinos Makantasis and Antonios Liapis and Georgios N. Yannakakis},
title={Knowing Your Annotator: Rapidly Testing the Reliability of Affect Annotation},
booktitle={Proceedings of the 11th International Conference on Affective Computing and Intelligent Interaction Workshops and Demos (ACIIW)},
year={2023},
}

Antonios Liapis, Christian Guckelsberger, Jichen Zhu, Casper Harteveld, Simone Kriglstein, Alena Denisova, Jeremy Gow and Mike Preuss: "Designing for Playfulness in Human-AI Authoring Tools," in Proceedings of the FDG workshop on Human-AI Interaction Through Play, 2023. PDF HTML BibTex

@inproceedings{liapis2023playfulness,
author={Antonios Liapis and Christian Guckelsberger and Jichen Zhu and Casper Harteveld and Simone Kriglstein and Alena Denisova and Jeremy Gow and Mike Preuss},
title={Designing for Playfulness in Human-{AI} Authoring Tools},
booktitle={Proceedings of the FDG workshop on Human-AI Interaction Through Play},
year={2023},
}

Konstantinos Makantasis, Kosmas Pinitas, Antonios Liapis and Georgios N. Yannakakis: "The Invariant Ground Truth of Affect," in Proceedings of the ACII Workshop on What's Next in Affect Modeling?, 2022. PDF BibTex

@inproceedings{makantasis2022invariant,
author={Konstantinos Makantasis and Kosmas Pinitas and Antonios Liapis and Georgios N. Yannakakis},
title={The Invariant Ground Truth of Affect},
booktitle={Proceedings of the ACII Workshop on What's Next in Affect Modeling?},
year={2022},
}

Konstantinos Sfikas, Antonios Liapis and Georgios N. Yannakakis: "A General-Purpose Expressive Algorithm for Room-based Environments," in Proceedings of the FDG workshop on Procedural Content Generation, 2022. PDF BibTex

@inproceedings{sfikas2022general,
author={Konstantinos Sfikas and Antonios Liapis and Georgios N. Yannakakis},
title={A General-Purpose Expressive Algorithm for Room-based Environments},
booktitle={Proceedings of the FDG workshop on Procedural Content Generation},
year={2022},
}

Theodoros Galanos, Antonios Liapis and Georgios N. Yannakakis: "AffectGAN: Affect-Based Generative Art Driven by Semantics," in Proceedings of the ACII Workshop on What's Next in Affect Modeling?, 2021. PDF BibTex

@inproceedings{galanos2021affectgan,
author={Theodoros Galanos and Antonios Liapis and Georgios N. Yannakakis},
title={AffectGAN: Affect-Based Generative Art Driven by Semantics},
booktitle={Proceedings of the ACII Workshop on What's Next in Affect Modeling?},
year={2021},
}

Matthew Barthet, Antonios Liapis and Georgios N. Yannakakis: "Go-Blend Behavior and Affect," in Proceedings of the ACII Workshop on What's Next in Affect Modeling?, 2021. PDF BibTex

@inproceedings{barthet2021goblend,
author={Matthew Barthet and Antonios Liapis and Georgios N. Yannakakis},
title={Go-Blend Behavior and Affect},
booktitle={Proceedings of the ACII Workshop on What's Next in Affect Modeling?},
year={2021},
}

Cristiana Pacheco, David Melhart, Antonios Liapis, Georgios N. Yannakakis and Diego Perez-Liebana: "Discrete versus Ordinal Time-Continuous Believability Assessment," in Proceedings of the ACII Workshop on Multimodal Analyses enabling Artificial Agents in Human-Machine Interaction (MA3HMI), 2021. PDF BibTex

@inproceedings{pacheco2021annotation,
author={Cristiana Pacheco and David Melhart and Antonios Liapis and Georgios N. Yannakakis and Diego Perez-Liebana},
title={Discrete versus Ordinal Time-Continuous Believability Assessment},
booktitle={Proceedings of the ACII Workshop on Multimodal Analyses enabling Artificial Agents in Human-Machine Interaction (MA3HMI)},
year={2021},
}

Antonios Liapis: "10 Years of the PCG workshop: Past and Future Trends," in Proceedings of the FDG Workshop on Procedural Content Generation, 2020. PDF BibTex

@inproceedings{liapis2020tenyears,
author = {Antonios Liapis},
title = {10 Years of the {PCG} workshop: Past and Future Trends},
booktitle={Proceedings of the FDG Workshop on Procedural Content Generation},
year={2020},
}

Matthew Guzdial, Devi Acharya, Max Kreminski, Michael Cook, Mirjam Eladhari, Antonios Liapis and Anne Sullivan: "Tabletop Roleplaying Games as Procedural Content Generators," in Proceedings of the FDG Workshop on Procedural Content Generation, 2020. PDF BibTex

@inproceedings{guzdial2020ttrpg,
author = {Matthew Guzdial and Devi Acharya and Max Kreminski and Michael Cook and Mirjam Eladhari and Antonios Liapis and Anne Sullivan},
title = {Tabletop Roleplaying Games as Procedural Content Generators},
booktitle={Proceedings of the FDG Workshop on Procedural Content Generation},
year={2020},
}

Aris Kosmopoulos, Antonios Liapis, George Giannakopoulos and Nikiforos Pittaras: "Summarizing Game Reviews: First Contact," in Proceedings of the SETN workshop on Games and AI, 2020. PDF BibTex

@inproceedings{kosmopoulos2020summarization,
author = {Aris Kosmopoulos and Antonios Liapis and George Giannakopoulos and Nikiforos Pittaras},
title = {Summarizing Game Reviews: First Contact},
booktitle = {Proceedings of the SETN workshop on Games and AI},
year = {2020},
}

Ioanna Lykourentzou, Antonios Liapis, Costas Papastathis, Konstantinos Papangelis and Costas Vassilakis: "Exploring Self-organisation in Crowd Teams," in Proceedings of the IE3 workshop on crowd-powered e-services, Springer, 2019. PDF BibTex

@inproceedings{lykourentzou2019selforganization,
author = {Ioanna Lykourentzou and Antonios Liapis and Costas Papastathis and Konstantinos Papangelis and Costas Vassilakis},
title = {Exploring Self-organisation in Crowd Teams},
booktitle={Proceedings of the IE3 workshop on crowd-powered e-services},
publisher={Springer}
year = {2019},
}

Michael Cerny Green, Ahmed Khalifa, Athoug Alsoughayer, Divyesh Surana, Antonios Liapis and Julian Togelius: "Two-step Constructive Approaches for Dungeon Generation," in Proceedings of the FDG Workshop on Procedural Content Generation, 2019. PDF BibTex

@inproceedings{green2019dungeon,
author = {Michael Cerny Green and Ahmed Khalifa and Athoug Alsoughayer and Divyesh Surana and Antonios Liapis and Julian Togelius},
title = {Two-step Constructive Approaches for Dungeon Generation},
booktitle = {Proceedings of the FDG Workshop on Procedural Content Generation},
year = {2019},
}

George Panagiotopoulos, George Giannakopoulos and Antonios Liapis: "A Study on Video Game Review Summarization," in Proceedings of the MultiLing Workshop: Summarization Across Languages, Genres and Sources, 2019. PDF BibTex

@inproceedings{panagopoulos2019summarization,
author = {George Panagiotopoulos and George Giannakopoulos and Antonios Liapis},
title = {A Study on Video Game Review Summarization},
booktitle = {Proceedings of the MultiLing Workshop: Summarization Across Languages, Genres and Sources},
pages = {35-43},
year = {2019},
}

Daniel Karavolos, Antonios Liapis and Georgios N. Yannakakis: "Pairing Character Classes in a Deathmatch Shooter Game via a Deep-Learning Surrogate Model," in Proceedings of the FDG Workshop on Procedural Content Generation, 2018. PDF BibTex

@inproceedings{karavolos2018pairing,
author={Daniel Karavolos and Antonios Liapis and Georgios N. Yannakakis},
title={Pairing Character Classes in a Deathmatch Shooter Game via a Deep-Learning Surrogate Model},
booktitle={Proceedings of the FDG Workshop on Procedural Content Generation},
year={2018},
}

David Melhart, Konstantinos Sfikas, Giorgos Giannakakis, Georgios N. Yannakakis and Antonios Liapis: "A Study on Affect Model Validity: Nominal vs Ordinal Labels," in Proceedings of the IJCAI workshop on AI and Affective Computing, 2018. PDF BibTex

@inproceedings{melhart2018study,
author={David Melhart and Konstantinos Sfikas and Giorgos Giannakakis and Georgios N. Yannakakis and Antonios Liapis},
title={A Study on Affect Model Validity: Nominal vs Ordinal Labels},
booktitle={Proceedings of the IJCAI workshop on AI and Affective Computing},
year={2018},
}

Daniel Karavolos, Antonios Liapis and Georgios N. Yannakakis: "Learning the Patterns of Balance in a Multi-Player Shooter Game," In Proceedings of the FDG workshop on Procedural Content Generation in Games, 2017. PDF BibTex

@inproceedings{karavolos2017patterns,
author = {Daniel Karavolos and Antonios Liapis and Georgios N. Yannakakis},
title = {Learning the Patterns of Balance in a Multi-Player Shooter Game},
booktitle = {Proceedings of the FDG workshop on Procedural Content Generation in Games},
year = {2017},
}

Sebastian Deterding, Jonathan Hook, Rebecca fiebrink, Marco Gillies, Jeremy Gow, Memo Akten, Gillian Smith, Antonios Liapis and Kate Compton: "Mixed-Initiative Creative Interfaces," In Proceedings of the CHI Conference Extended Abstracts on Human Factors in Computing Systems, 2017. PDF BibTex

@inproceedings{deterding2017mixedinitiative,
author = {Sebastian Deterding and Jonathan Hook and Rebecca fiebrink and Marco Gillies and Jeremy Gow and Memo Akten and Gillian Smith and Antonios Liapis and Kate Compton},
title = {Mixed-Initiative Creative Interfaces},
booktitle = {Proceedings of the CHI Conference Extended Abstracts on Human Factors in Computing Systems},
year = {2017},
}

Antonios Liapis and Georgios N. Yannakakis: "Boosting Computational Creativity with Human Interaction in Mixed-Initiative Co-Creation Tasks," in Proceedings of the ICCC workshop on Computational Creativity and Games. 2016. PDF BibTex

@inproceedings{liapis2016boostingcc,
author = {Antonios Liapis and Georgios N. Yannakakis},
title = {Boosting Computational Creativity with Human Interaction in Mixed-Initiative Co-Creation Tasks},
booktitle = {Proceedings of the ICCC workshop on Computational Creativity and Games},
year = {2016},
}

Christoffer Holmgard, Antonios Liapis, Julian Togelius and Georgios N. Yannakakis: "Monte-Carlo Tree Search for Persona Based Player Modeling," in Proceedings of the AIIDE workshop on Player Modeling, 2015. PDF BibTex

@inproceedings{holmgard2015mcts,
author = {Christoffer Holmg{\aa}rd and Antonios Liapis and Julian Togelius and Georgios N. Yannakakis},
title = {Monte-Carlo Tree Search for Persona Based Player Modeling},
booktitle={Proceedings of the AIIDE workshop on Player Modeling},
year = {2015},
}

Antonios Liapis: "Map Sketch Generation as a Service," in Proceedings of the AIIDE workshop on Experimental AI in Games, 2015. PDF BibTex

@inproceedings{liapis2015service,
author = {Antonios Liapis},
title = {Map Sketch Generation as a Service},
booktitle={Proceedings of the AIIDE workshop on Experimental AI in Games},
year = {2015},
}

Phil Lopes, Antonios Liapis and Georgios N Yannakakis: "Sonancia: Sonification of Procedurally Generated Game Levels," in Proceedings of the ICCC workshop on Computational Creativity & Games, 2015. PDF BibTex

@inproceedings{lopes2015sonancia,
author = {Phil Lopes and Antonios Liapis and Georgios N. Yannakakis},
title = {Sonancia: Sonification of Procedurally Generated Game Levels},
booktitle = {Proceedings of the ICCC workshop on Computational Creativity {&} Games},
year = {2015},
}

Ryan Abela, Antonios Liapis and Georgios N. Yannakakis: "A Constructive Approach for the Generation of Underwater Environments," in Proceedings of the FDG workshop on Procedural Content Generation in Games, 2015. PDF BibTex

@inproceedings{abela2015underwater,
author = {Ryan Abela and Antonios Liapis and Georgios N. Yannakakis},
title = {A Constructive Approach for the Generation of Underwater Environments},
booktitle = {Proceedings of the FDG workshop on Procedural Content Generation in Games},
year = {2015},
}

Gabriella A. B. Barros, Antonios Liapis and Julian Togelius: "Data Adventures," in Proceedings of the FDG workshop on Procedural Content Generation in Games, 2015. PDF BibTex

@inproceedings{barros2015dataadventures,
author = {Gabriella A. B. Barros and Antonios Liapis and Julian Togelius},
title = {Data Adventures},
booktitle = {Proceedings of the FDG workshop on Procedural Content Generation in Games},
year = {2015},
}

Sebastian Risi, Jinhong Zhang, Rasmus Taarnby, Peter Greve, Jan Piskur, Antonios Liapis and Julian Togelius: "The Case for a Mixed-Initiative Collaborative Neuroevolution Approach," in Proceedings of the ALIFE workshop on Artificial Life and the Web, 2014. PDF BibTex

@inproceedings{risi2014collaborative,
author = {Sebastian Risi and Jinhong Zhang and Rasmus Taarnby and Peter Greve and Jan Piskur and Antonios Liapis and Julian Togelius},
title = {The Case for a Mixed-Initiative Collaborative Neuroevolution Approach},
booktitle = {Proceedings of the ALIFE workshop on Artificial Life and the Web},
year = {2014},
}

Julian Togelius, Mark J. Nelson and Antonios Liapis: "Characteristics of Generatable Games," in Proceedings of the FDG Workshop on Procedural Content Generation, 2014. PDF BibTex

@inproceedings{togelius2014characteristics,
author = {Julian Togelius and Mark J. Nelson and Antonios Liapis},
title = {Characteristics of Generatable Games},
booktitle = {Proceedings of the FDG Workshop on Procedural Content Generation},
year = {2014},
}

Antonios Liapis, Georgios N. Yannakakis and Julian Togelius: "Designer Modeling for Personalized Game Content Creation Tools," in Proceedings of the AIIDE Workshop on Artificial Intelligence & Game Aesthetics, 2013. PDF HTML BibTex

@inproceedings{liapis2013designermodeling,
author = {Antonios Liapis and Georgios N. Yannakakis and Julian Togelius},
title = {Designer Modeling for Personalized Game Content Creation Tools},
booktitle = {Proceedings of the AIIDE Workshop on Artificial Intelligence {\&} Game Aesthetics},
year = {2013},
}

Antonios Liapis, Georgios N. Yannakakis and Julian Togelius: "Limitations of Choice-Based Interactive Evolution for Game Level Design," in Proceedings of the AIIDE Workshop on Human Computation in Digital Entertainment, 2012. PDF BibTex

@inproceedings{liapis2012limitations,
author = {Antonios Liapis and Georgios N. Yannakakis and Julian Togelius},
title = {Limitations of Choice-Based Interactive Evolution for Game Level Design},
booktitle = {Proceedings of AIIDE Workshop on Human Computation in Digital Entertainment},
year = {2012},
}

Selected Poster Papers

Roberto Gallotta, Antonios Liapis, Georgios N. Yannakakis: "LLMaker: A Game Level Design Interface Using (Only) Natural Language," in Proceedings of the IEEE Conference on Games, 2024. PDF BibTex

@inproceedings{gallotta2024llmaker,
author={Roberto Gallotta and Antonios Liapis and Georgios N. Yannakakis},
title={{LLMaker}: A Game Level Design Interface Using (Only) Natural Language},
booktitle={Proceedings of the IEEE Conference on Games},
year={2024},
}

Marvin Zammit, Antonios Liapis, Georgios N. Yannakakis: "CrawLLM: Theming Games with Large Language Models," in Proceedings of the IEEE Conference on Games, 2024. PDF BibTex

@inproceedings{zammit2024crawllm,
author={Marvin Zammit and Antonios Liapis and Georgios N. Yannakakis},
title={{CrawLLM}: Theming Games with {L}arge {L}anguage {M}odels},
booktitle={Proceedings of the IEEE Conference on Games},
year={2024},
}

Roberto Gallotta, Antonios Liapis, Georgios N. Yannakakis: "Dynamic Quality-Diversity Search," in Proceedings of the Genetic and Evolutionary Computation Conference Companion, 2024. PDF BibTex

@inproceedings{gallotta2024dynamic,
author={Roberto Gallotta and Antonios Liapis and Georgios N. Yannakakis},
title={Dynamic {Quality-Diversity} Search},
booktitle={Proceedings of the Genetic and Evolutionary Computation Conference Companion},
year={2024},
}

Konstantinos Sfikas, Antonios Liapis and Georgios N. Yannakakis: "Controllable Exploration of a Design Space via Interactive Quality Diversity," in Proceedings of the Genetic and Evolutionary Computation Conference Companion, 2023. PDF BibTex

@inproceedings{sfikas2023controllable,
author={Konstantinos Sfikas and Antonios Liapis and Georgios N. Yannakakis},
title={Controllable Exploration of a Design Space via Interactive Quality Diversity},
booktitle={Proceedings of the Genetic and Evolutionary Computation Conference Companion},
year={2023},
}

Theodoros Galanos, Antonios Liapis, Georgios N. Yannakakis and Reinhard Koenig: "ARCH-Elites: Quality-Diversity for Urban Design," in Proceedings of the Genetic and Evolutionary Computation Conference, 2021. PDF BibTex

@inproceedings{galanos2021archelitesposter,
author={Theodoros Galanos and Antonios Liapis and Georgios N. Yannakakis and Reinhard Koenig},
title={ARCH-Elites: Quality-Diversity for Urban Design},
booktitle={Proceedings of the Genetic and Evolutionary Computation Conference},
year={2021},
}

Daniele Gravina, Antonios Liapis and Georgios N. Yannakakis: "Blending Notions of Diversity for MAP-Elites," in Proceedings of the Genetic and Evolutionary Computation Conference, 2019. PDF BibTex

@inproceedings{gravina2019blending,
author = {Daniele Gravina and Antonios Liapis and Georgios N. Yannakakis},
title = {Blending Notions of Diversity for MAP-Elites},
booktitle = {Proceedings of the Genetic and Evolutionary Computation Conference},
year = {2019},
}

Daniele Gravina, Antonios Liapis and Georgios N. Yannakakis: "Exploring Divergence in Soft Robot Evolution," In Proceedings of the Genetic and Evolutionary Computation Conference, 2017. PDF BibTex

@inproceedings{gravina2017softrobot,
author = {Daniele Gravina and Antonios Liapis and Georgios N. Yannakakis},
title = {Exploring Divergence in Soft Robot Evolution},
booktitle = {Proceedings of the Genetic and Evolutionary Computation Conference},
year = {2017},
}

Phil Lopes, Antonios Liapis and Georgios N. Yannakakis: "Sonancia: a Multi-Faceted Generator for Horror," in Proceedings of the IEEE Conference on Computational Intelligence and Games (CIG). 2016. PDF BibTex

@inproceedings{lopes2016sonanciademo,
author = {Phil Lopes and Antonios Liapis and Georgios N. Yannakakis},
title = {Sonancia: a Multi-Faceted Generator for Horror},
booktitle = {Proceedings of the IEEE Conference on Computational Intelligence and Games (CIG)},
year = {2016},
}

Christoffer Holmgard, Antonios Liapis, Julian Togelius and Georgios N. Yannakakis: "MiniDungeons 2: An Experimental Game for Capturing and Modeling Player Decisions," in Proceedings of the 10th Conference on the Foundations of Digital Games. 2015. PDF BibTex

@inproceedings{holmgard2015minidungeons2,
author = {Christoffer Holmgard and Antonios Liapis and Julian Togelius and Georgios N. Yannakakis},
title = {MiniDungeons 2: An Experimental Game for Capturing and Modeling Player Decisions},
booktitle = {Proceedings of the 10th Conference on the Foundations of Digital Games},
year = {2016},
}

Not Peer-Reviewed

Zines

Antonios Liapis: "Deciphering Generated Symbols as a Game Mechanic: The Design of Alien Transmission," in Seeds: The Procjam Zine 3. 2018. HTML BibTex

@incollection{liapis2018alientransmission,
author = {Antonios Liapis},
title = {Deciphering Generated Symbols as a Game Mechanic: The Design of Alien Transmission},
booktitle = {Seeds: The Procjam Zine},
issue = {3},
year = {2018},
}

Antonios Liapis: "Real-world Data as a Seed," in Seeds: The Procjam Zine 3. 2018. HTML BibTex

@incollection{liapis2018realdata,
author = {Antonios Liapis},
title = {Real-world Data as a Seed},
booktitle = {Seeds: The Procjam Zine},
issue = {3},
year = {2018},
}