Interests

Complex Systems

Multi-Agent Systems

Game Theory

Evolutionary Dynamics of Cooperation, Fairness and Social Norms

Complex Networks

Current Projects


Publications

2022

  Cooperation and learning dynamics under risk diversity and financial incentives

Ramona Merhej and Fernando P. Santos and Francisco S. Melo and Francisco C. Santos, in Proc. of the 21st International Conference on Autonomous Agents and Multiagent Systems (AAMAS 2022), Full paper, IFAAMAS, 2022

2021

  Cooperation between independent reinforcement learners under wealth inequality

Ramona Merhej and Fernando P. Santos and Francisco S. Melo and Francisco C. Santos, in Proc. of the 20th International Conference on Autonomous Agents and Multiagent Systems (AAMAS 2021), U. Endriss, A. Nowé, F. Dignum, A. Lomuscio (eds.), May 3-7, 2021, Full Paper, IFAAMAS (2021) [Nominated for the AAMAS best paper award]]., 2021

Dynamics of informal risk-sharing in collective index insurance

Fernando P. Santos and Jorge M. Pacheco and Francisco C. Santos and Simon A. Levin, Nature Sustainability, pg. https://doi.org/10.1038/s41893-020-00667-2, 2021

Eliciting fairness in multiplayer bargaining through network-based role assignment

Andreia Sofia Teixeira and Francisco C. Santos and Alexandre P. Francisco and Fernando P. Santos, in Proc. of the 20th International Conference on Autonomous Agents and Multiagent Systems (AAMAS 2021), U. Endriss, A. Nowé, F. Dignum, A. Lomuscio (eds.), May 3-7, 2021, Extended Abstract, IFAAMAS (2021)., 2021

Eliciting fairness in N-player network games through degree-based role assignment

Andreia Sofia Teixeira and Francisco C. Santos and Alexandre P. Francisco and Fernando P. Santos, Complexity, Vol. 2021, No. 6851477, 2021

Evolutionary games in cities and urban planning

Sara Encarnação and Fernando P. Santos and Francisco C. Santos and Margarida Pereira and Jorge M. Pacheco and Juval Portugali, Handbook on Cities and Complexity, pg. 349-369, Vol. 349, Elgar Publishing, 2021

Learning Collective Action under Risk Diversity

Ramona Merhej and Fernando P. Santos and Francisco S. Melo and Francisco C. Santos, Cooperative AI Workshop (CoopAI 2021), NeurIPS 2021 - Conference on Neural Information Processing Systems , 2021, 2021

Social network interventions to prevent reciprocity-driven polarization

Fernando P. Santos and Jorge M. Pacheco and Francisco C. Santos and Simon A. Levin, in Proc. of the 20th International Conference on Autonomous Agents and Multiagent Systems (AAMAS 2021), U. Endriss, A. Nowé, F. Dignum, A. Lomuscio (eds.), May 3-7, 2021, Extended Abstract, IFAAMAS (2021)., 2021

The complexity of human cooperation under indirect reciprocity

Fernando P. Santos and Jorge M. Pacheco and Francisco C. Santos, Philosophical Transactions of the Royal Society B, Vol. 376, No. 20200291, Royal Society, 2021

2020

  Picky Losers and Carefree Winners Prevail in Collective Risk Dilemmas with Partner Selection

Fernando P. Santos and Samuel Mascarenhas and Francisco C. Santos and Filipa Correia and Samuel Gomes and Ana Paiva, Autonomous Agents and Multi-Agent Systems , Vol. 34 , No. 40, 2020

2019

  Evolution of collective fairness in hybrid populations of humans and agents

Fernando P. Santos and Jorge M Pacheco and Ana Paiva and Francisco C. Santos, in AAAI 2019, 33rd AAAI Conference on Artificial Intelligence, Feb, 2019., 2019

For a fair world, which nodes should have the last word in multiplayer ultimatum bargaining?

Andreia Sofia Teixeira and Francisco C. Santos and Alexandre P Francisco and Fernando P. Santos, in Proc. of the 2019 International Conference on Computational Social Science (IC2S2 2019)., 2019

For The Record-A Public Goods Game For Exploring Human-Robot Collaboration

Filipa Correia and Samuel Mascarenhas and Samuel Gomes and Silvia Tulli and Fernando P. Santos and Francisco C. Santos and Rui Prada and Francisco S. Melo and Ana Paiva, Proceedings of the 18th International Conference on Autonomous Agents and MultiAgent Systems, pg. 2351--2353, 2019

Outcome-based Partner Selection in Collective Risk Dilemmas

Fernando P. Santos and Samuel Mascarenhas and Francisco C. Santos and Filipa Correia and Samuel Gomes and Ana Paiva, Proceedings of the 18th International Conference on Autonomous Agents and MultiAgent Systems, pg. 1556--1564, 2019

Reward and punishment in climate change dilemmas

António Góis and Fernando P. Santos and Jorge M. Pacheco and Francisco C. Santos, Scientific Reports, Nature Publishing Group, 2019

Walk the Talk! Exploring (Mis) Alignment of Words and Deeds by Robotic Teammates in a Public Goods Game

Filipa Correia and Shruti Chandra and Samuel Mascarenhas and Julien Charles-Nicolas and Justin Gally and Diana Lopes and Fernando P. Santos and Francisco C. Santos and Francisco S. Melo and Ana Paiva, 2019 28th IEEE International Conference on Robot and Human Interactive Communication (RO-MAN), pg. 1--7, 2019

2018

  Indirect Reciprocity and Costly Reputation Building in Multiagent Systems

Fernando P. Santos and Jorge M. Pacheco and Francisco C. Santos, In AAAI Conference on Artificial Intelligence (Student Track), pg. 8149-8150, AAAI Press, 2018

Engineering Pro-Sociality with Autonomous Agents

Ana Paiva and Fernando P. Santos and Francisco C. Santos, In AAAI Conference on Artificial Intelligence, pg. 7994-7999, AAAI Press, 2018

Human Cooperation and the Complexity of Moral Codes

Fernando P. Santos and Jorge M. Pacheco and Francisco C. Santos, Artificial Life Conference Proceedings, pg. 614–615, MIT press, 2018

Local Wealth Redistribution Promotes Cooperation in Multiagent Systems

Flávio L. Pinheiro and Fernando P. Santos, Proc. of the 17th International Conference on Autonomous Agents and Multiagent Systems (AAMAS 2018), pg. 786-794, IFAAMAS, 2018

Multiplayer Ultimatum Games and Collective Fairness in Networked Communities

Fernando P. Santos and Jorge M. Pacheco and Ana Paiva and Francisco C. Santos, Artificial Life Conference Proceedings, pg. 286–287, MIT Press, 2018

Paths to the Adoption of Electric Vehicles: An Evolutionary Game Theoretical Approach

Sara Encarnação and Fernando P. Santos and Francisco C. Santos and Jorge M. Pacheco and Juval Portugali and Vered Blass, Transportation Research Part B: Methodological, pg. 24-33, 2018

Social norm complexity and past reputations in the evolution of cooperation

Fernando P. Santos and Francisco C. Santos and Jorge M. Pacheco, Nature, Vol. 555, pg. 242-245, 2018

Social Norms of Cooperation With Costly Reputation Building

Fernando P. Santos and Jorge M. Pacheco and Francisco C. Santos, In AAAI Conference on Artificial Intelligence, pg. 4727-4734, AAAI Press, 2018

2017

  Indirect reciprocity in populations of explorative agents

Fernando P. Santos and Jorge M. Pacheco and Francisco C. Santos, Workshop Adaptive Learning Agents (ALA'17) at AAMAS 2017, 2017

Multiplayer ultimatum game on complex networks: the role of structural power

Fernando P. Santos and Francisco C. Santos and Ana Paiva and Jorge M. Pacheco, 6th International Conference on Complex Networks & Their Applications, pg. 21-23, December, 2017, 2017

Social Norms of Cooperation in Multiagent Systems (Doctoral Consortium)

Fernando P. Santos, Proc. of the 16th International Conference on Autonomous Agents and Multiagent Systems (AAMAS 2017), pg. 1859-1860, IFAAMAS, 2017

Stochastic dynamics through hierarchically embedded Markov chains

Vítor V. Vasconcelos and Fernando P. Santos and Francisco C. Santos and Jorge M. Pacheco, Physical Review Letters, Vol. 118, No. 058301, 2017

Structural power and the evolution of collective fairness in social networks

Fernando P. Santos and Jorge M. Pacheco and Ana Paiva and Francisco C. Santos, PLoS One, Vol. 12, No. 4, pg. e0175687, April, 2017

The Role of Execution Errors in Populations of Ultimatum Bargaining Agents

Fernando P. Santos and Jorge M. Pacheco and Ana Paiva and Francisco C. Santos, Conflict Resolution in Decision Making: Second International Workshop, COREDEMA 2016, The Hague, The Netherlands, August 29-30, 2016, Revised Selected Papers, pg. 36-50, Springer International Publishing, Cham, 2017

2016

  An evolutionary game theoretic approach to multi-sector coordination and self-organization

Fernando P. Santos and Sara Encarnação and Francisco C. Santos and Juval Portugali and Jorge M. Pacheco, Entropy, Vol. 18, No. 2, pg. 152, 2016

Dynamics of Fairness in Groups of Autonomous Learning Agents

Fernando P. Santos and Francisco C. Santos and Francisco S. Melo and Ana Paiva and Jorge M. Pacheco, Autonomous Agents and Multiagent Systems, AAMAS 2016 Workshops Best Papers, pg. 107-126, Vol. 10002, Springer International Publishing, 2016

Cooperation and Reputation in Primitive Societies

Fernando P. Santos and Francisco C. Santos and Jorge M. Pacheco, in: Tom Froese (eds) Artificial Life XV: Proceedings of The Fifteenth International Conference on the Synthesis and Simulation of Living Systems., pg. 470-471, MIT press, July, 2016

Evolution of cooperation under indirect reciprocity and arbitrary exploration rates

Fernando P. Santos and Jorge M. Pacheco and Francisco C. Santos, Scientific Reports, Vol. 6, No. 37517, Nature Pub. Group, 2016

Evolution of Fairness in Multiplayer Ultimatum Games

Fernando P. Santos and Francisco C. Santos and Ana Paiva and Jorge M. Pacheco, Multidisciplinary Applications of Evolutionary Game Theory, Satellite Workshop at ALife XV (July 4, 2016), 2016

Execution Errors Enable the Evolution of Fairness in the Ultimatum Game

Fernando P. Santos and Francisco C. Santos and Ana Paiva and Jorge M. Pacheco, Proceedings of the 22st European Conference on Artificial Intelligence (ECAI2016), pg. 1592-1593, IOS Press, 2016

Learning to be Fair in Multiplayer Ultimatum Games (Extended Abstract)

Fernando P. Santos and Francisco C. Santos and Francisco S. Melo and Ana Paiva and Jorge M. Pacheco, Proceedings of the 2016 International Conference on Autonomous Agents & Multiagent Systems , pg. 1381-1382 , IFAAMAS, 2016

Multiplayer ultimatum game in populations of autonomous agents

Fernando P. Santos and Francisco C. Santos and Francisco S. Melo and Ana Paiva and Jorge M. Pacheco, Proceedings of Adaptive and Learning Agents Workshop (ALA 2016), part of 2016 Int. Conf. Autonomous Agents and Multiagent Systems (AAMAS 2016), (Best paper award), 2016

Paradigm shifts and the interplay between state, business and civil sectors

Sara Encarnação and Fernando P. Santos and Francisco C. Santos and Vered Blass and Jorge M. Pacheco and Juval Portugali, Royal Society Open Science, Vol. 3, No. 160753, The Royal Society, 2016

Social norms of cooperation in small-scale societies

Fernando P. Santos and Francisco C. Santos and Jorge M. Pacheco, PLoS Computational Biology, Vol. 2, No. 1, pg. e1004709, 2016

2015

  Evolutionary Dynamics of Group Fairness

Fernando P. Santos and Francisco C. Santos and Ana Paiva and Jorge M. Pacheco, Journal of Theoretical Biology, Vol. 378, pg. 96–102, 2015

Evolutionary perks of being irrational

Fernando P. Santos and Francisco C. Santos and Ana Paiva, Proceedings of the 2015 International Conference on Autonomous Agents and Multiagent Systems, pg. 1847-1848, IFAAMAS, 2015