Author

Sihan Shang

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#natural language process... Feb 2026

ReBeCA: Unveiling Interpretable Behavior Hierarchy behind the Iterative Self-Reflection of Language Models with Causal Analysis

ReBeCA is introduced, a framework for analyzing the interpretable behavioral hierarchy governing the self-reflection outcome by modeling self-reflection trajectories as causal graphs and selecting observed parent candidates and evaluating their stability through a three-stage ICP-based pipeline.

Tian-Qiang Yan, Sihan Shang, Yu-Heng Li et al. · arXiv.org · 1 citation

#artificial intelligence Review Jun 2026

Are LLMs Ready to Assist Physicians? PhysAssistBench for Interactive Doctor-Patient-EHR Assistance

PhysAssistBench is introduced, a benchmark for interactive doctor-patient-EHR assistance that uses a scalable pipeline to construct agentic patients: interactive, record-grounded agents that turn static EHR records into multi-turn clinical scenarios while preserving clinical factuality.

T. Du, Peijie Yu, Sihan Shang et al. · arXiv.org · 0 citations

Jul 2026

SentAttack: A Sentence-Level Black-Box Adversarial Attack Method for Dense Retrieval Models

SentAttack is a sentence-level black-box adversarial attack method for DR models that outperforms existing adversarial attacks on DR models, with especially strong performance on low-ranked target documents.

Luping Wei, Ya-Min Hu, Sihan Shang et al. · arXiv.org · 0 citations