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Yizhou Sun

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#artificial intelligence Preprint Sep 2026

Personalized State-Transition-Aware Memory for Clinical Agents

Large language model (LLM) agents that reason over clinical records must track changes in a patient's state while preserving the history needed to understand them. Simply accumulating memories leaves it unclear which information still applies, whereas overwriting earlier memories can erase evidence needed to reconstruc...

Maryam Haghifam, Zahra Rajabi, Yi-Zhou Sun et al. · 0 citations
Preprint Aug 2026

The Imperfective Paradox Is Not Necessarily in Large Language Models: A Benchmark Failure Before a Model Failure

The results show that models often do not affirm culmination but nevertheless accept the corresponding simple-past hypothesis, a pattern the authors characterize as Sufficiency Bias, and show that prompting interventions produce a Decision Shift among labels without reliably improving the underlying semantic understand...

Kaiqiao Han, Yi-Zhou Sun · 0 citations

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