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Multimodal large language models (MLLMs) have demonstrated remarkable capabilities across vision-language tasks, yet their large-scale deployment raises pressing concerns about memorized private data, outdated knowledge, and harmful…

机器学习 · 计算机科学 2026-02-03 Chenlu Ding , Jiancan Wu , Leheng Sheng , Fan Zhang , Yancheng Yuan , Xiang Wang , Xiangnan He

Large language model (LLM) unlearning has become a critical mechanism for removing undesired data, knowledge, or behaviors from pre-trained models while retaining their general utility. Yet, with the rise of open-weight LLMs, we ask: can…

机器学习 · 计算机科学 2025-10-21 Bingqi Shang , Yiwei Chen , Yihua Zhang , Bingquan Shen , Sijia Liu

Machine unlearning aims to remove specific information, e.g. sensitive or undesirable content, from large language models (LLMs) while preserving overall performance. We propose an inference-time unlearning algorithm that uses contrastive…

计算与语言 · 计算机科学 2025-06-17 Vinith M. Suriyakumar , Ayush Sekhari , Ashia Wilson

Representation steering offers a lightweight mechanism for controlling the behavior of large language models (LLMs) by intervening on internal activations at inference time. Most existing methods rely on a single global steering direction,…

机器学习 · 计算机科学 2026-03-04 Laziz U. Abdullaev , Noelle Y. L. Wong , Ryan T. Z. Lee , Shiqi Jiang , Khoi N. M. Nguyen , Tan M. Nguyen

Recently, large language models (LLMs) have advanced recommendation systems (RSs), and recent works have begun to explore how to integrate LLMs into industrial RSs. While most approaches deploy LLMs offline to generate and pre-cache…

信息检索 · 计算机科学 2026-04-22 Yunjia Xi , Menghui Zhu , Jianghao Lin , Bo Chen , Ruiming Tang , Yong Yu , Weinan Zhang

Large Language Models (LLMs) deployed in real-world settings increasingly face the need to unlearn sensitive, outdated, or proprietary information.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…

计算与语言 · 计算机科学 2025-10-28 Taha Entesari , Arman Hatami , Rinat Khaziev , Anil Ramakrishna , Mahyar Fazlyab

As VLMs are deployed in safety-critical applications, their ability to abstain from answering when uncertain becomes crucial for reliability, especially in Scene Text Visual Question Answering (STVQA) tasks. For example, OCR errors like…

计算机视觉与模式识别 · 计算机科学 2025-11-26 Jihan Yao , Achin Kulshrestha , Nathalie Rauschmayr , Reed Roberts , Banghua Zhu , Yulia Tsvetkov , Federico Tombari

Multimodal Large Language Models (MLLMs) extend foundation models to real-world applications by integrating inputs such as text and vision. However, their broad knowledge capacity raises growing concerns about privacy leakage, toxicity…

机器学习 · 计算机科学 2025-11-11 Kunhao Li , Wenhao Li , Di Wu , Lei Yang , Jun Bai , Ju Jia , Jason Xue

Large Language Models (LLMs) are foundational to AI advancements, facilitating applications like predictive text generation. Nonetheless, they pose risks by potentially memorizing and disseminating sensitive, biased, or copyrighted…

人工智能 · 计算机科学 2024-03-26 Youyang Qu , Ming Ding , Nan Sun , Kanchana Thilakarathna , Tianqing Zhu , Dusit Niyato

Machine unlearning has the potential to improve the safety of large language models (LLMs) by removing sensitive or harmful information post hoc. A key challenge in unlearning involves balancing between forget quality (effectively…

机器学习 · 计算机科学 2025-06-23 Shengyuan Hu , Neil Kale , Pratiksha Thaker , Yiwei Fu , Steven Wu , Virginia Smith

Large Language Models (LLMs) have emerged as powerful tools, but their inherent safety risks - ranging from harmful content generation to broader societal harms - pose significant challenges. These risks can be amplified by the recent…

Large language model unlearning has become a critical challenge in ensuring safety and controlled model behavior by removing undesired data-model influences from the pretrained model while preserving general utility. Significant recent…

计算与语言 · 计算机科学 2025-04-17 Soumyadeep Pal , Changsheng Wang , James Diffenderfer , Bhavya Kailkhura , Sijia Liu

The widespread deployment of Large Language Models (LLMs) trained on massive, uncurated corpora has raised growing concerns about the inclusion of sensitive, copyrighted, or illegal content. This has led to increasing interest in LLM…

计算与语言 · 计算机科学 2025-06-10 Chenlong Zhang , Zhuoran Jin , Hongbang Yuan , Jiaheng Wei , Tong Zhou , Kang Liu , Jun Zhao , Yubo Chen

As AI models are trained on ever-expanding datasets, the ability to remove the influence of specific data from trained models has become essential for privacy protection and regulatory compliance. Unlearning addresses this challenge by…

人工智能 · 计算机科学 2026-01-21 Shizhou Xu , Yuan Ni , Stefan Broecker , Thomas Strohmer

Machine unlearning seeks to selectively remove the "influence" of specific training data on a model's outputs. The ideal goal is Retrain Equivalence--behavior identical to a model trained from scratch on only the retained data. This goal…

机器学习 · 计算机科学 2025-10-31 Jiatong Yu , Yinghui He , Anirudh Goyal , Sanjeev Arora

We present the first comprehensive evaluation of cross-lingual unlearning in multilingual LLMs. Using translated TOFU benchmarks in seven language/script variants, we test major unlearning algorithms and show that most fail to remove facts…

计算与语言 · 计算机科学 2026-01-13 Tyler Lizzo , Larry Heck

Current LLM unlearning methods face a critical security vulnerability that undermines their fundamental purpose: while they appear to successfully remove sensitive or harmful knowledge, this ``forgotten" information remains precariously…

机器学习 · 计算机科学 2025-10-01 Wenhan Wu , Zheyuan Liu , Chongyang Gao , Ren Wang , Kaize Ding

A conventional LLM Unlearning setting consists of two subsets -"forget" and "retain", with the objectives of removing the undesired knowledge from the forget set while preserving the remaining knowledge from the retain. In privacy-focused…

机器学习 · 计算机科学 2025-09-09 Praveen Bushipaka , Lucia Passaro , Tommaso Cucinotta

Unlearning in large language models (LLMs) aims to remove harmful training data while preserving overall utility. However, we find that existing methods often hallucinate, generate abnormal token sequences, or behave inconsistently, raising…

机器学习 · 计算机科学 2026-05-12 Renjie Gu , Jiazhen Du , Yihua Zhang , Sijia Liu

Recently, large language models (LLMs) have emerged as a notable field, attracting significant attention for its ability to automatically generate intelligent contents for various application domains. However, LLMs still suffer from…

密码学与安全 · 计算机科学 2024-04-29 Kongyang Chen , Zixin Wang , Bing Mi , Waixi Liu , Shaowei Wang , Xiaojun Ren , Jiaxing Shen