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Yifan Liu

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#artificial intelligence Review Sep 2026

Auditing Agent Actions through Query-Conditioned Attribution

LLM agents increasingly take consequential actions through interactions with users, policies, and external tools. Auditing these agents requires automated attribution of realized actions to their historical basis. However, existing attribution formulations do not provide question-specific traces for diverse auditing ob...

Yi-Fan Liu, Praveen Venkateswaran, Abdulhamid Adebayo et al. · 0 citations
Book Jul 2026

Topology-Aware Tokenization for Generative Recommendation

Topology-Aware Tokenization (TopoTok) is proposed, an item tokenization framework that preserves item relational structure throughout the quantization hierarchy and effectively alleviates topology distortion and consistently outperforms state-of-the-art tokenizers.

Yao-Kun Liu, Yi-Fan Liu, Zhenrui Yue et al. · 0 citations
#human-computer interacti... Book Open access Aug 2026

Beyond Truth Discovery: A Two-Stage Framework to Assess the Severity of False Claim during Disasters

This work proposes a two-stage framework to assess the severity of false claims during disasters, and investigates false claim severity assessment as a human-AI alignment problem, evaluating whether models can reproduce human judgments under a shared evaluation rubric rather than merely predicting severity labels.

Ruichen Yao, Tejna Dasari, G. Baispay et al. · 0 citations
Preprint Aug 2026

PropUQ-MAS: Propagation-Aware Uncertainty Quantification for LLM Multi-Agent Systems

PropUQ-MAS is proposed, an error propagation-aware UQ framework that represents MAS execution as a communication-structured graph and estimates each step's reliability by combining local uncertainty with uncertainty inherited from upstream messages.

Yao-Kun Liu, Yi-Fan Liu, D. Zhang et al. · 1 citation

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