الباحثون

Yi Wei

المنشورات 4

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DeFA: Dependency-Guided Failure Attribution for LLM Agents

Bo Deng, Xinlei Zheng, Yi Wei وآخرون · 2026

Errors in LLM agent executions and their visible consequences can be separated by many steps, making decisive-error localization a matter of understanding both step content and step dependencies. We introduce DeFA, a dependency-guided framework for agent failure attribution. DeFA first combines protocol relations and s …

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Revisiting Diffusion Fine-Tuning for Unsupervised Domain Adaptation

Xuan Qi, Yi Wei, Daniele Berardini وآخرون · 2026

Diffusion-based unsupervised domain adaptation (UDA) improves cross-domain transfer by generating target-specific synthetic data for downstream adaptation. Existing methods are largely designed for single-target adaptation: when a model trained on one labeled source domain must be adapted to multiple unlabeled target d …

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Faster Visuomotor Policy Learning on Action Manifolds via Riemannian MeanFlow

S. Talha Bukhari, Austin Garrett, Yi Wei وآخرون · 2026

Visuomotor policies learn a direct map from raw sensory observations to robot action sequences. Policies based on Diffusion and Flow Matching capture the multimodal distribution over action sequences in an end-to-end manner. This expressivity comes at the cost of multi-step numerical integration of the learned vector f …

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