RLVR refresher: verifiable rewards work but the signal is sparse
helloiamleonie · x · 2026-09-25
As a setup for OPD, Leonie reviews RLVR: for math, extract the final answer, verify against ground truth, and grade the whole trajectory on success. It works well, but the reward signal is sparse — a single pass/fail per trajectory — which motivates the dense per-token signal of on-policy distillation.
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