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Bo-Wen Song

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#artificial intelligence Preprint Oct 2026

CoCA: Criterion-Aware Credit Assignment for Rubric-Based Reinforcement Learning

Rubric-based reinforcement learning (RL) evaluates responses against explicit criteria to construct rewards, offering a viable way to train large language models on open-ended tasks. However, standard methods compress criterion-level feedback into scalar rewards and assign uniform token advantages, leaving structured r...

Guang-Cheng Zhu, Ying-Fan Ma, Xing Zheng et al. · 0 citations
Preprint Jul 2026

Alipay-PIBench: A Realistic Payment Integration Benchmark for Coding Agents

Payment integration is a demanding repository-level software task: agents must select a suitable product, implement coordinated client-server flows, verify payment outcomes, and preserve consistency between transaction and business states. We introduce Alipay-PIBench, a benchmark for evaluating coding agents on realist...

Shiyu Ying, Xuejie Cao, Yingfan Ma et al. · 0 citations
#machine learning Preprint Sep 2026

DE-Venus: A Data-Efficient RLVR Framework for Large Language Models

DE-Venus is presented, a unified framework for data-efficient RLVR that treats supervision as evolving state across data preparation and policy optimization and reduces annotation and training costs without sacrificing scalable RL execution.

Shen-Zhi Yang, Guang-Cheng Zhu, Kai Tang et al. · 0 citations
Preprint Aug 2026

HopRefusalBench: Diagnosing Refusal Failures in Search-Augmented Agents for Multi-Hop Reasoning

This work introduces HopRefusalBench, the first controlled benchmark of refusal within multi-hop search, and proposes a final-outcome taxonomy spanning target-aware refusal, pseudo-refusal, hallucinated completion, and search-budget exhaustion, together with source-aware trajectory metrics for post-trigger continuation...

Jianan Xie, Xin Sun, Zhongqi Chen et al. · 0 citations
Preprint Aug 2026

EviSD: Evidence-Conditioned Self-Distillation for Search-Augmented Agents

EviSD is proposed, an evidence-conditioned self-distillation framework that uses instance-level supporting evidence as privileged information for search actions and golden answers as complementary privilege for answer actions, and achieves the highest macro-average Exact Match in all evaluated settings.

Jianan Xie, Xin Sun, Zhongqi Chen et al. · 1 citation

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