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V-STAR: Value-Guided RecSys Sampling

V-STAR: Value-Guided RecSys Sampling

V-STAR addresses probability-reward mismatch in generative recsys via value-guided decoding and sibling-relative RL. VED efficiently explores high-potential prefixes; Sibling-GRPO focuses on decisive branches. Outperforms baselines in accuracy and diversity.

ArXiv AIResearchFeb 12#research#v-star#v1