TRIAGE adds role-typed credit assignment to agentic reinforcement learning

arXiv·medium signal

Standard GRPO applies the final verifier outcome as a uniform advantage over all action tokens, which punishes useful exploration in failed rollouts and rewards redundant actions in successful ones. TRIAGE assigns credit by action role (searches, clicks, edits, navigation) so environment-facing steps are scored by type rather than a single trajectory-wide signal. This is a concrete lever for anyone training tool-using agents where naive GRPO reinforces the wrong behaviors.