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Zhenwei An

3 accepted papers

2026

Measuring and Mitigating Post-hoc Rationalization in Reverse Chain-of-Thought Generation

ICML 2026poster

Reverse Chain-of-Thought Generation (RCG) synthesizes reasoning traces from query-answer pairs, but runs the risk of producing post-hoc rationalizations: when models can see the answer during generation, the answer serves as a cognitive anchor that shapes the entire explanation. We formalize this ph…

Cited by 0SourceScholar
2024

Harder Task Needs More Experts: Dynamic Routing in MoE Models

ACL 2024long

In this paper, we introduce a novel dynamic expert selection framework for Mixture of Experts (MoE) models, aiming to enhance computational efficiency and model performance by adjusting the number of activated experts based on input difficulty. Unlike existing MoE approaches that rely on fixed TopK…

2022

Do Charge Prediction Models Learn Legal Theory?

EMNLP 2022finding

The charge prediction task aims to predict the charge for a case given its fact description. Recent models have already achieved impressive accuracy in this task, however, little is understood about the mechanisms they use to perform the judgment.For practical applications, a charge prediction model…