Probing Dec-POMDP Reasoning in Cooperative MARL
A new research paper published on arXiv questions the effectiveness of current benchmarks in cooperative multi-agent reinforcement learning (MARL). The study introduces diagnostic tools to assess whether agents truly employ Dec-POMDP reasoning, which involves inferring hidden states and coordinating based on local information. Findings indicate that many popular MARL benchmarks do not necessitate this complex reasoning, with simpler reactive policies often achieving comparable performance. The research suggests that current training paradigms may lead to inflated progress assessments and calls for more rigorous environment design and evaluation in the field. AI
IMPACT Current MARL benchmarks may overestimate agent capabilities, suggesting a need for more rigorous evaluation methods.