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#machine learning Preprint Sep 2026

Evolution of fairness in multi-objective reinforcement learning framework

This work proposes a multi-objective reinforcement learning framework that models the evolution of fairness as a dynamic trade-off between material payoff maximization and fairness-driven moral behavior, regulated by a fairness pressure coefficient.

Jing-Yi Zhang, Xin Ou, Guo-Zhong Zheng et al. · 0 citations
Preprint Aug 2026

Evolution of cooperation with Q-learning: how much information do we need?

Mechanistic analyses show that a moderate neighborhood size enables individuals to strike an optimal balance between information sufficiency and decision-making tractability, which allows them to detect reciprocal opportunities while avoiding the deterioration of decision quality due to information overload.

Yi-Hsin Ku, Xin Ou, Ji-Qiang Zhang et al. · 0 citations

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