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Kaiqiao Han

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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
Open access Aug 2026

How well do LLMs understand code?

SemBench is introduced, a novel benchmark consisting of 1000 diverse C programs sourced from the CodeParrot GitHub-code dataset, with 15,404 semantic questions spanning six basic but fundamental properties: dead code-statement, data dependency, function reachability, dominator, dead code-loop, and liveness.

Jade Xu, Ren-Liang Sun, Zijian Ding et al. · 0 citations

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