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Learning in Matrix Games can be Arbitrarily Complex


Mar 05, 2021
Gabriel P. Andrade, Rafael Frongillo, Georgios Piliouras


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Scaling up Mean Field Games with Online Mirror Descent


Feb 28, 2021
Julien Perolat, Sarah Perrin, Romuald Elie, Mathieu Laurière, Georgios Piliouras, Matthieu Geist, Karl Tuyls, Olivier Pietquin


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Follow-the-Regularized-Leader Routes to Chaos in Routing Games


Feb 17, 2021
Jakub Bielawski, Thiparat Chotibut, Fryderyk Falniowski, Grzegorz Kosiorowski, Michał Misiurewicz, Georgios Piliouras

* 30 pages, 8 figures 

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Solving Min-Max Optimization with Hidden Structure via Gradient Descent Ascent


Jan 13, 2021
Lampros Flokas, Emmanouil-Vasileios Vlatakis-Gkaragkounis, Georgios Piliouras


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Evolutionary Game Theory Squared: Evolving Agents in Endogenously Evolving Zero-Sum Games


Dec 15, 2020
Stratis Skoulakis, Tanner Fiez, Ryann Sim, Georgios Piliouras, Lillian Ratliff

* To appear in AAAI 2021 

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Efficient Online Learning of Optimal Rankings: Dimensionality Reduction via Gradient Descent


Nov 05, 2020
Dimitris Fotakis, Thanasis Lianeas, Georgios Piliouras, Stratis Skoulakis


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No-regret learning and mixed Nash equilibria: They do not mix


Oct 20, 2020
Lampros Flokas, Emmanouil-Vasileios Vlatakis-Gkaragkounis, Thanasis Lianeas, Panayotis Mertikopoulos, Georgios Piliouras

* 24 pages, 7 figures, 1 table 

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No-regreet learning and mixed Nash equilibria: They do not mix


Oct 19, 2020
Lampros Flokas, Emmanouil-Vasileios Vlatakis-Gkaragkounis, Thanasis Lianeas, Panayotis Mertikopoulos, Georgios Piliouras

* 24 pages, 7 figures, 1 table 

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Chaos, Extremism and Optimism: Volume Analysis of Learning in Games


May 28, 2020
Yun Kuen Cheung, Georgios Piliouras

* 20 pages, 4 figures 

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From Poincaré Recurrence to Convergence in Imperfect Information Games: Finding Equilibrium via Regularization


Feb 19, 2020
Julien Perolat, Remi Munos, Jean-Baptiste Lespiau, Shayegan Omidshafiei, Mark Rowland, Pedro Ortega, Neil Burch, Thomas Anthony, David Balduzzi, Bart De Vylder, Georgios Piliouras, Marc Lanctot, Karl Tuyls

* 43 pages 

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Smooth markets: A basic mechanism for organizing gradient-based learners


Jan 18, 2020
David Balduzzi, Wojciech M Czarnecki, Thomas W Anthony, Ian M Gemp, Edward Hughes, Joel Z Leibo, Georgios Piliouras, Thore Graepel

* ICLR 2020 
* 18 pages, 3 figures 

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Multiagent Evaluation under Incomplete Information


Oct 30, 2019
Mark Rowland, Shayegan Omidshafiei, Karl Tuyls, Julien Perolat, Michal Valko, Georgios Piliouras, Remi Munos


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Efficiently avoiding saddle points with zero order methods: No gradients required


Oct 29, 2019
Lampros Flokas, Emmanouil-Vasileios Vlatakis-Gkaragkounis, Georgios Piliouras

* To appear in NeurIPS 2019 

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Poincaré Recurrence, Cycles and Spurious Equilibria in Gradient-Descent-Ascent for Non-Convex Non-Concave Zero-Sum Games


Oct 28, 2019
Lampros Flokas, Emmanouil-Vasileios Vlatakis-Gkaragkounis, Georgios Piliouras

* To appear in NeurIPS 2019 (Spotlight talk) 

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Fast and Furious Learning in Zero-Sum Games: Vanishing Regret with Non-Vanishing Step Sizes


May 11, 2019
James P. Bailey, Georgios Piliouras


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Multi-Agent Learning in Network Zero-Sum Games is a Hamiltonian System


Mar 05, 2019
James P. Bailey, Georgios Piliouras


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Short-distance commuters in the smart city


Feb 16, 2019
Francisco Benita, Garvit Bansal, Georgios Piliouras, Bige Tunçer

* 21 pages 

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Venn GAN: Discovering Commonalities and Particularities of Multiple Distributions


Feb 09, 2019
Yasin Yazıcı, Bruno Lecouat, Chuan-Sheng Foo, Stefan Winkler, Kim-Hui Yap, Georgios Piliouras, Vijay Chandrasekhar


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Optimistic mirror descent in saddle-point problems: Going the extra (gradient) mile


Oct 01, 2018
Panayotis Mertikopoulos, Bruno Lecouat, Houssam Zenati, Chuan-Sheng Foo, Vijay Chandrasekhar, Georgios Piliouras

* 26 pages, 14 figures 

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The Unusual Effectiveness of Averaging in GAN Training


Jun 12, 2018
Yasin Yazıcı, Chuan-Sheng Foo, Stefan Winkler, Kim-Hui Yap, Georgios Piliouras, Vijay Chandrasekhar


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First-order Methods Almost Always Avoid Saddle Points


Oct 20, 2017
Jason D. Lee, Ioannis Panageas, Georgios Piliouras, Max Simchowitz, Michael I. Jordan, Benjamin Recht


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Cycles in adversarial regularized learning


Sep 08, 2017
Panayotis Mertikopoulos, Christos Papadimitriou, Georgios Piliouras

* 22 pages, 4 figures 

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Truly Multi-modal YouTube-8M Video Classification with Video, Audio, and Text


Jul 10, 2017
Zhe Wang, Kingsley Kuan, Mathieu Ravaut, Gaurav Manek, Sibo Song, Yuan Fang, Seokhwan Kim, Nancy Chen, Luis Fernando D'Haro, Luu Anh Tuan, Hongyuan Zhu, Zeng Zeng, Ngai Man Cheung, Georgios Piliouras, Jie Lin, Vijay Chandrasekhar

* 8 pages, Accepted to CVPR'17 Workshop on YouTube-8M Large-Scale Video Understanding 

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Learning Agents in Black-Scholes Financial Markets: Consensus Dynamics and Volatility Smiles


May 24, 2017
Tushar Vaidya, Carlos Murguia, Georgios Piliouras

* 12 pages, 7 figures 

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Gradient Descent Only Converges to Minimizers: Non-Isolated Critical Points and Invariant Regions


Jun 07, 2016
Ioannis Panageas, Georgios Piliouras

* 2 figures 

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