Approximation of Log-Partition Function in Policy Mirror Descent Induces Implicit Regularization for LLM Post-Training

Benchmark Model Rank Results
mathematical-reasoning-on-aime24PMD-mean (Qwen3-30B-A3B-Base, τ=0.1)#80Acc: 50.83
mathematical-reasoning-on-aime-2025PMD-mean (Qwen3-30B-A3B-Base, τ=0.1)#103Accuracy: 37.19