04:00
2026-08-25
machinebrief.com
artificial-intelligence
Hints, Critics, and Teachers: Prior Injection for Sparse-Reward RL in Vision-Language Math Reasoning
A new arXiv study (2608.21811v1) finds that in sparse-reward reinforcement learning for vision-language math reasoning, prior injection only helps when it actually reaches the policy: on 20,830 visual…