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

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, 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, 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

Antonios Liapis, Georgios N. Yannakakis, Mark J. Nelson, Mike Preuss and Rafael Bidarra: "Orchestrating Game Generation" in Transactions on Games, 2019. (accepted) PDF HTML BibTex

@article{liapis2018orchestrating,
author = {Antonios Liapis and Georgios N. Yannakakis and Mark J. Nelson and Mike Preuss and Rafael Bidarra},
title = {Orchestrating Game Generation},
journal = {IEEE Transactions on Games},
note = {accepted},
year = {2019},
}

Gabriella A. B. Barros, Michael Cerny Green, Antonios Liapis and Julian Togelius: "Who Killed Albert Einstein? From Open Data to Murder Mystery Games," IEEE Transactions on Games (accepted), 2018. 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},
note = {accepted},
year = {2018},
}

Christoffer Holmgard, Michael Cerny Green, Antonios Liapis and Julian Togelius: "Automated Playtesting with Procedural Personas through MCTS with Evolved Heuristics," IEEE Transactions on Games (accepted), 2018. PDF BibTex

@article{holmgard2018evolvedmcts,
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},
note = {accepted},
year = {2018},
}

Phil Lopes, Antonios Liapis and Georgios N. Yannakakis: "Modelling Affect for Horror Soundscapes," IEEE Transactions of Affective Computing, 2017. PDF BibTex

@article{lopes2017modelingsoundscapes,
author = {Phil Lopes and Antonios Liapis and Georgios N. Yannakakis},
title = {Modelling Affect for Horror Soundscapes},
journal = {IEEE Transactions of Affective Computing},
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 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, 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, 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

Kalliopi Kontiza, Antonios Liapis and Joseph Padfield: "Capturing the Virtual Movement of Paintings: A Game and A Tool" in Proceedings of the Digital Heritage Conference, 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 Conference},
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 Pokémon 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, 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},
}

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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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

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},
}

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, 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, 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, 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, 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, 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, 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, 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},
}