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Author

Zhen Zhang

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#natural language process... Preprint Sep 2026

Dependency-Aware Trajectory Refinement for Efficient Multi-Turn Agent Fine-Tuning

Refinement of multi-modal QA trajectories is proposed, viewing each trajectory as a round-level dependency DAG that exposes which rounds are globally load-bearing for the final answer, and fine-tune agents on trajectories refined through this DAG.

Zhuo Chen, Zhen Zhang, Xinyu Wang et al. · 0 citations
#natural language process... Preprint Aug 2026

FrontierChallenge: Evaluating Scientific Workflow Completion

Scientific agents increasingly analyze data, execute code, and produce research artifacts, yet most benchmarks emphasize final answers, isolated programs, or a single domain. We introduce FrontierChallenge, a cross-domain benchmark comprising 300 end-to-end scientific workflows. In this paper, we release and evaluate 9...

Liang-Cai Su, Zhao-Peng Feng, Zhuo Chen et al. · 0 citations

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