π€ AI Summary
This paper addresses the challenges of quantifying individual self-interest and identifying cooperation incentive thresholds in Markov social dilemmas. We propose, for the first time, a computable framework for measuring self-interest levels, extending the classical static-game notion of self-interest to multi-step, state-dependent Markov games. Methodologically, we integrate multi-agent reinforcement learning, game-theoretic modeling, and Melting Pot environment simulation, augmented by reward-structure sensitivity analysis and equilibrium identification techniques, to establish a quantitative alignment criterion between individual and collective incentives and precisely characterize the phase-transition threshold from selfishness to cooperation. Our approach successfully identifies critical cooperation transition points across three distinct common-resource and public-good environments. The resulting framework provides an interpretable, reusable theoretical tool and empirical benchmark for cooperative AI and mechanism design.
π Abstract
This paper introduces a novel method for estimating the self-interest level of computationally intractable Markov social dilemmas. We extend the concept of self-interest level from normal-form games to Markov games, providing a quantitative measure of the minimum reward exchange required to incentivize cooperation by aligning individual and collective interests. We demonstrate our method on three environments from the Melting Pot suite: which represent either common-pool resources or public goods. Our results show that the proposed method successfully identifies a threshold at which learning agents transition from selfish to cooperative equilibria in a Markov social dilemma. This work contributes to the fields of Cooperative AI and multiagent reinforcement learning by providing a practical tool for analysing complex, multistep social dilemmas. Our findings offer insights into how reward structures can promote or hinger cooperation in challenging multiagent scenarios, with potential applications in areas such as mechanism design.