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Pham Viet Hai

dblp:234/7982 · DBLP profile ↗
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1ranked-venue papers
0as first author
0since 2021 · last 2020
0000-0001-9993-4070ORCID · reported

Domains — the database's venue-derived domains; a paper can count in several

Artificial intelligence and machine learning · 1Graphics, computer vision, multimedia, augmented reality and games · 1

Expertise — from the expertise taxonomy: the topics of the expert's papers under the CCF categories. A weight counts papers with recency: 1 for a paper about the topic, 0.3 when the topic is its context, halved every five years.

Artificial intelligence
1 paper
Reinforcement learning · 50% Multi-agent systems · 50%
Theoretical computer science
1 paper
Algorithmic game theory and mechanism design · 100%

Topics — the 3 heaviest of 3, each with the papers that count most for it

TopicWeightPapersLastEvidence papers
Knowledge, reasoning and agents › Multi-agent systems
equilibrium computation
0.412020
Model and Reinforcement Learning for Markov Games with Risk Preferences · AAAI 2020
Machine learning › Reinforcement learning
multi-agent reinforcement learning
0.412020
Model and Reinforcement Learning for Markov Games with Risk Preferences · AAAI 2020
Algorithmic game theory and mechanism design
stochastic games
0.412020
Model and Reinforcement Learning for Markov Games with Risk Preferences · AAAI 2020

Methods — techniques the papers use, named apart from their topics

saddle-point stochastic optimization · 0.9q-learning · 0.9minimax risk measures · 0.9kakutani fixed point theorem · 0.9
YearPublicationVenuePosition
2020 Model and Reinforcement Learning for Markov Games with Risk Preferences
abstract
We motivate and propose a new model for non-cooperative Markov game which considers the interactions of risk-aware players. This model characterizes the time-consistent dynamic “risk” from both stochastic state transitions (inherent to the game) and randomized mixed strategies (due to all other players). An appropriate risk-aware equilibrium concept is proposed and the existence of such equilibria is demonstrated in stationary strategies by an application of Kakutani's fixed point theorem. We further propose a simulation-based Q-learning type algorithm for risk-aware equilibrium computation. This algorithm works with a special form of minimax risk measures which can naturally be written as saddle-point stochastic optimization problems, and covers many widely investigated risk measures. Finally, the almost sure convergence of this simulation-based algorithm to an equilibrium is demonstrated under some mild conditions. Our numerical experiments on a two player queuing game validate the properties of our model and algorithm, and demonstrate their worth and applicability in real life competitive decision-making.
Pham Viet Hai, William B. Haskell 0001
AAAI2