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cs.CL2025
Teaching LLMs to Abstain via Fine-Grained Semantic Confidence Reward
Hao An, Yang Xu
Mitigating hallucinations in Large Language Models (LLMs) is critical for their reliable deployment. Existing methods typically fine-tune LLMs to abstain from answering questions b…
cs.SE2025
Towards Better Correctness and Efficiency in Code Generation
Yunlong Feng, Yang Xu, Xiao Xu +2
While code large language models have demonstrated remarkable progress in code generation, the generated code often exhibits poor runtime efficiency, limiting its practical applica…