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Yuntao Wen

4 accepted papers

2026

Beyond Superficial Forgetting: Thorough Unlearning Through Knowledge Density Estimation and Block Re-Insertion

AAAI 2026technical

Machine unlearning, which selectively removes harmful knowledge from a pre-trained model without retraining from scratch, is crucial for addressing privacy, regulatory compliance, and ethical concerns in Large Language Models (LLMs). However, existing unlearning methods often struggle to thoroughly

Cited by 0SourcePDFScholar
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
2026

What Affects the Stability of Tool Learning? An Empirical Study on the Robustness of Tool Learning Frameworks

IJCAI 2026

Tool learning methods have enhanced the ability of large language models (LLMs) to interact with real-world applications. Many existing works fine-tune LLMs or design prompts to enable LLMs to select appropriate tools and correctly invoke them to meet user requirements. However, it is observed in pr

Cited by 0Scholar
2025

Lock on Target! Precision Unlearning via Directional Control

EMNLP 2025

The unlearning method aims at effectively removing harmful, sensitive, or outdated knowledge without costly retraining the model. However, existing methods suffer from two critical limitations: (1) collateral forgetting, where erasing target data inadvertently removes related but desirable knowledge

Cited by 0SourcePDFScholar