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Related papers: R-TOFU: Unlearning in Large Reasoning Models

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Large Language Models (LLMs) deployed in real-world settings increasingly face the need to unlearn sensitive, outdated, or proprietary information. Existing unlearning methods typically formulate forgetting and retention as a regularized…

Computation and Language · Computer Science 2025-10-28 Taha Entesari , Arman Hatami , Rinat Khaziev , Anil Ramakrishna , Mahyar Fazlyab

Machine unlearning offers a promising solution to privacy and safety concerns in large language models (LLMs) by selectively removing targeted knowledge while preserving utility. However, current methods are highly sensitive to downstream…

Long chain-of-thought (CoT) significantly enhances the reasoning capabilities of large language models (LLMs). However, extensive reasoning traces lead to inefficiencies and increased time-to-first-token (TTFT). We propose a training…

Computation and Language · Computer Science 2026-01-08 Roy Xie , David Qiu , Deepak Gopinath , Dong Lin , Yanchao Sun , Chong Wang , Saloni Potdar , Bhuwan Dhingra

Large Reasoning Models (LRMs) significantly improve the reasoning ability of Large Language Models (LLMs) by learning to reason, exhibiting promising performance in solving complex tasks. However, their deliberative reasoning process leads…

Computation and Language · Computer Science 2025-08-14 Yue Liu , Jiaying Wu , Yufei He , Ruihan Gong , Jun Xia , Liang Li , Hongcheng Gao , Hongyu Chen , Baolong Bi , Jiaheng Zhang , Zhiqi Huang , Bryan Hooi , Stan Z. Li , Keqin Li

Large Language Models (LLMs) trained on extensive corpora inevitably retain sensitive data, such as personal privacy information and copyrighted material. Recent advancements in knowledge unlearning involve updating LLM parameters to erase…

Computation and Language · Computer Science 2024-10-08 Bozhong Tian , Xiaozhuan Liang , Siyuan Cheng , Qingbin Liu , Mengru Wang , Dianbo Sui , Xi Chen , Huajun Chen , Ningyu Zhang

As large language models (LLMs) are applied across diverse domains, the ability to selectively unlearn specific information is becoming increasingly essential. For instance, LLMs are expected to selectively provide confidential information…

Computation and Language · Computer Science 2025-06-04 Shota Takashiro , Takeshi Kojima , Andrew Gambardella , Qi Cao , Yusuke Iwasawa , Yutaka Matsuo

With the passage of the Right to Be Forgotten (RTBF) regulations and the scaling up of language model training datasets, research on model unlearning in large language models (LLMs) has become more crucial. Before the era of LLMs, machine…

Computation and Language · Computer Science 2024-06-05 Bichen Wang , Yuzhe Zi , Yixin Sun , Yanyan Zhao , Bing Qin

Large Language Models (LLMs) demonstrate remarkable capabilities, but their training on massive corpora poses significant risks from memorized sensitive information. To mitigate these issues and align with legal standards, unlearning has…

Computation and Language · Computer Science 2025-11-18 Ruichen Qiu , Jiajun Tan , Jiayue Pu , Honglin Wang , Xiao-Shan Gao , Fei Sun

Large language models (LLMs) may memorize sensitive or copyrighted content, raising privacy and legal concerns. Due to the high cost of retraining from scratch, researchers attempt to employ machine unlearning to remove specific content…

Computation and Language · Computer Science 2025-08-12 Xiaojian Yuan , Tianyu Pang , Chao Du , Kejiang Chen , Weiming Zhang , Min Lin

Large Language Models (LLMs) inevitably acquire harmful information during training on massive datasets. LLM unlearning aims to eliminate the influence of such harmful information while maintaining the model's overall performance. Existing…

Computation and Language · Computer Science 2025-03-07 Wenyu Wang , Mengqi Zhang , Xiaotian Ye , Zhaochun Ren , Zhumin Chen , Pengjie Ren

Unlearning in large foundation models (e.g., LLMs) is essential for enabling dynamic knowledge updates, enforcing data deletion rights, and correcting model behavior. However, existing unlearning methods often require full-model fine-tuning…

Machine Learning · Computer Science 2025-12-09 Yezi Liu , Hanning Chen , Wenjun Huang , Yang Ni , Mohsen Imani

Machine unlearning for LLMs aims to remove sensitive or copyrighted data from trained models. However, the true efficacy of current unlearning methods remains uncertain. Standard evaluation metrics rely on benign queries that often mistake…

Machine Learning · Computer Science 2026-02-09 Patryk Rybak , Paweł Batorski , Paul Swoboda , Przemysław Spurek

LLMs have been found to memorize training textual sequences and regurgitate verbatim said sequences during text generation time. This fact is known to be the cause of privacy and related (e.g., copyright) problems. Unlearning in LLMs then…

Machine Learning · Computer Science 2024-05-07 George-Octavian Barbulescu , Peter Triantafillou

The significant advancements in large language models (LLMs) give rise to a promising research direction, i.e., leveraging LLMs as recommenders (LLMRec). The efficacy of LLMRec arises from the open-world knowledge and reasoning capabilities…

Information Retrieval · Computer Science 2024-07-02 Hangyu Wang , Jianghao Lin , Bo Chen , Yang Yang , Ruiming Tang , Weinan Zhang , Yong Yu

Large Language Models (LLMs) have shown to be a great success in a wide range of applications ranging from regular NLP-based use cases to AI agents. LLMs have been trained on a vast corpus of texts from various sources; despite the best…

Computation and Language · Computer Science 2024-11-26 Abhinav Joshi , Shaswati Saha , Divyaksh Shukla , Sriram Vema , Harsh Jhamtani , Manas Gaur , Ashutosh Modi

Large language models (LLMs) exhibit remarkable generative capabilities but raise ethical and security concerns by memorizing sensitive data, reinforcing biases, and producing harmful content. These risks have spurred interest in LLM…

Machine Learning · Computer Science 2025-10-13 Changsheng Wang , Yihua Zhang , Dennis Wei , Jinghan Jia , Pin-Yu Chen , Sijia Liu

Unlearning seeks to remove specific knowledge from large language models (LLMs), but its effectiveness remains contested. On one side, "forgotten" knowledge can often be recovered through interventions such as light fine-tuning; on the…

Computation and Language · Computer Science 2025-09-30 Qingjie Zhang , Haoting Qian , Zhicong Huang , Cheng Hong , Minlie Huang , Ke Xu , Chao Zhang , Han Qiu

Large Language Model (LLM) unlearning has recently gained significant attention, driven by the need to remove unwanted information, such as private, sensitive, or copyrighted content, from LLMs. However, conventional unlearning approaches…

Computation and Language · Computer Science 2025-06-03 Yixin Wan , Anil Ramakrishna , Kai-Wei Chang , Volkan Cevher , Rahul Gupta

Large Language Models (LLMs) often memorize sensitive, private, or copyrighted data during pre-training. LLM unlearning aims to eliminate the influence of undesirable data from the pre-trained model while preserving the model's utilities on…

Machine Learning · Computer Science 2024-10-14 Ruiqi Zhang , Licong Lin , Yu Bai , Song Mei

Current unlearning methods for large language models usually rely on reverse optimization to reduce target token probabilities. However, this paradigm disrupts the subsequent tokens prediction, degrading model performance and linguistic…

Computation and Language · Computer Science 2025-05-29 Haoming Xu , Ningyuan Zhao , Liming Yang , Sendong Zhao , Shumin Deng , Mengru Wang , Bryan Hooi , Nay Oo , Huajun Chen , Ningyu Zhang