Yuanpu Cao

The Pennsylvania State University

Papers on Lattice

Total citations

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Research focus

Data Curation & Synthetic Data (1)Eval Frameworks & Benchmarks (1)Reasoning & Chain-of-Thought (1)

Frequent co-authors

Yifan Lan (1)Hanyu Wang (1)Jinghui Chen (1)

Papers (1)

May 21, 2026

May 21, 2026·also University of California

The Illusion of Reasoning: Exposing Evasive Data Contamination in LLMs via Zero-CoT Truncation

LLMs' impressive reasoning may be an illusion: truncating their reasoning steps reveals memorization-based shortcuts that current contamination detection methods miss.

Yifan Lan, Yuanpu Cao, Hanyu Wang +1

Data Curation & Synthetic Data Eval Frameworks & Benchmarks Reasoning & Chain-of-Thought

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Yuanpu Cao

Research focus

Frequent co-authors

Papers (1)