CoRT: Counterfactual Replay for Token-Level Rubric-Guided Policy Optimization
- 类型:arxiv
- 标识:2607.25659
- 链接:https://arxiv.org/abs/2607.25659
- 主分类:evaluation
- 形态:method
- 被引:0
- 被引来源:Semantic Scholar + OpenAlex
- S2被引:0
- OpenAlex被引:0
- 影响力被引:0
- TLDR:CoRT is proposed, a token-level credit weighting method for rubric-conditioned GRPO that uses counterfactual replay to rescore the same sampled response under the original rubric-conditioned prompt and a matched criteria-free prompt, and suggests that policy-internal counterfactual likelihood contrasts provide an effective training signal for within-response credit allocation.
- OpenAlex ID:W7171674157
- OpenAlex DOI:10.48550/arxiv.2607.25659
- DOI:10.48550/arxiv.2607.25659
- DOI来源:OpenAlex
- 开放获取:green
- 开放获取链接:https://doi.org/10.48550/arxiv.2607.25659
- OpenAlex更新:2026-08-25
- 待LLM分类:否
- 标题中文:CoRT: 用于 token 级 rubric 引导策略优化的反事实回放
- TLDR中文:本文提出 CoRT,一种用于 rubric 条件化 GRPO 的 token 级 credit 加权方法,通过反事实回放在原始 rubric 条件化 prompt 和匹配的免准则 prompt 下对同一样本响应重新打分,并表明策略内部反事实似然对比为响应内 credit 分配提供了有效的训练信号。
- 来源文件:
- /inbox/tom/_candidates/2026-07-30-agent-rag-longcontext-candidates.json
- [S2 enrich]
- [OpenAlex backfill]