Interests
I'm currently an assistant professor at the Computer Science Department of Instituto Superior Técnico - Technical University of Lisbon (IST-UTL), where I teach courses on Introduction to Programming, Artificial Intelligence, Logic Programing, and Autonomous Agents and Multi-Agent Systems.
I've been working with computational models of emotions and agent architectures since 2004, when I started working on my MsC. By then my main interest was to understand how emotions affect cognitive processes and to build agents that could use such processes to influence behaviour.
In the most recent years, my attention shifted from the influence of emotions in reasoning towards reasoning about emotions and building plans of actions to influence emotions in self in others; the third and fourth skills of Emotional Intelligence as proposed by Mayer and Salovey. I'm particularly interest in studying how Interpersonal Emotion Regulation affects social relations and helps build believable social interations.
Additionally, i'm also studying and "playing a bit with" Theory of Mind, Mindblindness, Memory and other cognitive processes. Actually, if there is something that is cognitive, symbolic, based on psychological studies on human behaviour, and implementable, then I'm interested.
Current Projects
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Publications


Manuel Guimarães and Samuel Mascarenhas and Rui Prada and Pedro Santos and João Dias, Proceedings of the 18th International Conference on Autonomous Agents and MultiAgent Systems, pg. 2357--2359, International Foundation for Autonomous Agents and Multiagent Systems, May, 2019
Artificial intelligence moving serious gaming: Presenting reusable game AI components

Wim Westera and Rui Prada and Samuel Mascarenhas and Pedro Santos and João Dias and Manuel Guimarães and Konstantinos Georgiadis and Enkhbold Nyamsuren and Kiavash Bahreini and Zerrin Yumak and others, Education and Information Technologies, pg. 1--30, Springer, July, 2019
Inferring Emotions from Touching Patterns


Mojgan Hashemian and Rui Prada and Pedro A Santos and João Dias and Samuel Mascarenhas, , pg. 1--7, IEEE, 2019
Multi-task Learning and Catastrophic Forgetting in Continual Reinforcement Learning


João G. Ribeiro and Francisco S. Melo and João Dias, 5th Global Conference on Artificial Intelligence, pg. 163-175, December, 2019
Studying the Effect of Robot Frustration on Children's Change of Perspective


Elmira Yadollahi and Wafa Johal and Joao Dias and Pierre Dillenbourg and Ana Paiva, 2019 8th International Conference on Affective Computing and Intelligent Interaction Workshops and Demos (ACIIW), pg. 381--387, 2019

Samuel Mascarenhas and Manuel Guimarães and Rui Prada and João Dias and Pedro A Santos and Kam Star and Ben Hirsh and Ellis Spice and Rob Kommeren, 2018 IEEE Conference on Computational Intelligence and Games (CIG), pg. 1--7, IEEE, August, 2018


Raul Benites Paradeda and Mojgan Hashemian and Carla Guerra and Rui Prada and João Dias and Ana Paiva, Proceedings of the 16th Conference on Autonomous Agents and MultiAgent Systems, pg. 1673--1675, 2017
How Robots Persuasion based on Personality Traits May Affect Human Decisions


Raul Benites Paradeda and Maria José Ferreira and João Dias and Ana Paiva, Proceedings of the Companion of the 2017 ACM/IEEE International Conference on Human-Robot Interaction - HRI '17, pg. 251-252, ACM, New York, NY, USA, March, 2017

Nuno Salvador and João Dias and Samuel Mascarenhas and Ana Paiva, Proceedings of the 15th International Conference on Autonomous Agents and Multiagent Systems (AAMAS 2016), IFAAMAS, May, 2016
Emotional Sharing Behavior for a Social Robot in a Competitive Setting


Sofia Petisca and João Dias and Patrícia Alves-Oliveira and Ana Paiva, RO-MAN Conference, August, 2016


Sérgio Hortas Rodrigues and Samuel Mascarenhas and João Dias and Ana Paiva, Interacting with Computers, Vol. 27, No. 4, pg. 371-391, Oxford University Press, February, 2015
More May Be Less: Emotional Sharing in an Autonomous Social Robot


Sofia Petisca and João Dias and Ana Paiva, AAAI Fall Symposium Series, pg. 107-110, September, 2015
More Social and Emotional behavior May Lead to Poorer Perceptions of a Social Robot


Sofia Petisca and João Dias and Ana Paiva, , pg. 522-531, Social Robotics, Springer, 2015

Gonçalo Pereira and António Brisson and João Dias and André Carvalho and Joana Dimas and Samuel Mascarenhas and Joana Campos and Marco Vala and Iolanda Leite and Carlos Martinho and Rui Prada and Ana Paiva, Psychology, Pedagogy, and Assessment in Serious Games, pg. 127-152, IGI GLobal, 2014


João Dias and Ana Paiva, Proceedings of the International Conference on Autonomous Agents and Multiagent Systems (AAMAS) , IFAAMAS/ACM DL, May, 2013
Lie to Me: Virtual Agents that Lie


João Dias, Proceedings of the International Conference on Autonomous Agents and Multiagent Systems (AAMAS)., IFAAMAS/ACM DL, St. Paul, USA, May, 2013
The Great Deceivers: Virtual Agents and Believable Lies


João Dias and Ruth Aylett and Ana Paiva, CogSci 2013- The annual meeting of the Cognitive Science Society, pg. 2189-2194, August, 2013
Towards agents with human-like decisions under uncertainty


Nuno Marques and Francisco S. Melo and Samuel Mascarenhas and João Dias and Rui Prada and Ana Paiva, Cogsci 2013- The annual Meeting of the Cognitive Science Society, 2013


Mei Lim and João Dias and Ruth Aylett and Ana Paiva, International Journal of Autonomous Agents and Multi-Agent Systems, Vol. 24, No. 2, pg. 287-311, 2012


João Dias and Ana Paiva, ACII 2011, pg. 77-86, Springer Berlin / Heidelberg, Eindhoven, The Netherlands, September, 2011
FAtiMA Modular: Towards an Agent Architecture with a Generic Appraisal Framework


João Dias and Samuel Mascarenhas and Ana Paiva, Workshop on Standards in Emotion Modeling, Leiden, 2011


Samuel Mascarenhas and João Dias and Rui Prada and Ana Paiva, Applied Artificial Intelligence, Vol. 24, No. 6, pg. 552-574, 2010
Creating Individual Agents through Personality Traits


Tiago Doce and João Dias and Rui Prada and Ana Paiva, IVA'2010 - 10th International Conference on Intelligent Virtual Agents, pg. 257-264, Springer Berlin / Heidelberg, Philadelphia, USA, September, 2010


Samuel Mascarenhas and João Dias and Rui Prada and Ana Paiva, IVA'2009 - 9th International Conference on Intelligent Virtual Agents, pg. 272-286, Springer Berlin / Heidelberg, Amsterdam, The Netherlands, September, 2009

Ruth Aylett and Ana Paiva and João Dias and Lyn Hall, Affective Information Processing, Springer, Tao J. and Tan T., 2008

Wan Ching Ho and João Dias and Rui Figueiredo and Ana Paiva, AAMAS - Autonomous Agents and Multiagent Systems, 2007
Authoring Emergent Narrative Based Games


Sandy Louchart and Ruth Aylett and Michael Kriegel and João Dias and Rui Figueiredo and Ana Paiva, Journal of Game Development, Vol. 3, pg. 19-37, 2007
Authoring Emergent Narrative Based Games

Ruth Aylett and Sandy Louchart and Michael Kriegel and Rui Figueiredo and João Dias and Ana Paiva, , 2007
Double Appraisal for Synthetic Characters


Sandy Louchart and Ruth Aylett and João Dias, 7th International Conference Intelligent Virtual Agents - IVA 2007, pg. 393-394, Springer, 2007
I Know What I Did Last Summer: Autobiographic Memory in Synthetic Characters


João Dias and Wan Ching Ho and Nathalie Beeckman and Ana Paiva and Elisabeth André, Affective Computing and Intelligent Interaction, Second International Conference - ACII 2007, pg. 606-617, Springer, 2007


João Dias and Ana Paiva and Marco Vala and Ruth Aylett and Sarah Woods and Carsten Zoll, Affective and Emotional Aspects of Human-Computer Interaction, Vol. 1, IOS Press, Maja Pivec, 2006
An affectively driven planner for synthetic characters


Ruth Aylett and João Dias and Ana Paiva, Proceedings of International Conference on Automated Planning and Scheduling (ICAPS06), UK, 2006
Making It Up as You Go Along - Improvising Stories for Pedagogical Purposes


Ruth Aylett and Rui Figueiredo and Sandy Louchart and João Dias and Ana Paiva, IVA'2006 -Intelligent Virtual Agents, Springer, 2006
Mind the Body


Marco Vala and João Dias, 6th International Conference on Intelligent Virtual Agents - IVA 2006, Springer Berlin / Heidelberg, 2006
Shaping Emergent Narratives for a Pedagogical Application


Rui Figueiredo and João Dias and Ruth Aylett and Sandy Louchart and Ana Paiva
Understanding Emotions in Drama, a Step Towards Interactive Narratives


Sandy Louchart and Ruth Aylett and João Dias and Sibylle Enz, AISB symposium on AI, Games, and Narrative, UK, 2006
Unscripted Narrative for Affectively Driven Characters


Ruth Aylett and Sandy Louchart and João Dias and Ana Paiva and Marco Vala and Sarah Woods and Lynne Hall, IEEE Computer Graphics and Applications, pg. 43-52, May-June, 2006

Ruth Aylett and Ana Paiva and João Dias and Lyn Hall and Sarah Woods, 1st International Conference on Affective Computing and Intelligent Interaction, Springer Berlin / Heidelberg, 2005
FearNot! an Experiment in Emergent Narrative


Ruth Aylett and Sandy Louchart and João Dias and Ana Paiva, IVA'2005 - 5th International Conference on Intelligent Virtual Agents, pg. 305-316, Springer Berlin / Heidelberg, 2005
Feeling and Reasoning: a Computational Model for Emotional Agents


João Dias and Ana Paiva, Proceedings of 12th Portuguese Conference on Artificial Intelligence, EPIA 2005, pg. 127-140, Springer, 2005


Ana Paiva and João Dias and Daniel Sobral and Ruth Aylett and Sarah Woods and Carsten Zoll and Lynne Hall, AAMAS'2004 - International Conference on Autonomous Agents and Multi-agent Systems, ACM Press, July, 2004