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Large language models (LLMs) acquire information from pre-training corpora, but their stored knowledge can become inaccurate or outdated over time. Model editing addresses this challenge by modifying model parameters without retraining, and…

Computation and Language · Computer Science 2025-09-09 Zherui Li , Houcheng Jiang , Hao Chen , Baolong Bi , Zhenhong Zhou , Fei Sun , Junfeng Fang , Xiang Wang

With increasing size of large language models (LLMs), full-parameter fine-tuning imposes substantial memory demands. To alleviate this, we propose a novel memory-efficient training paradigm called Momentum Low-rank compression (MLorc). The…

Machine Learning · Computer Science 2026-04-28 Wei Shen , Zhang Yaxiang , Minhui Huang , Mengfan Xu , Jiawei Zhang , Cong Shen

Post-training compression reduces the computational and memory costs of large language models (LLMs), enabling resource-efficient deployment. However, existing compression benchmarks only focus on language modeling (e.g., perplexity) and…

Machine Learning · Computer Science 2025-06-03 Peijie Dong , Zhenheng Tang , Xiang Liu , Lujun Li , Xiaowen Chu , Bo Li

Sequential Locate-and-Edit (L&E) model editing can fail abruptly after many edits. We identify and formalize this failure as a positive norm-feedback loop, in which solved value vectors and edited MLP weights progressively amplify each…

Machine Learning · Computer Science 2026-05-07 Mingda Liu , Zhenghan Zhu , Ze'an Miao , Katsuki Fujisawa

Knowledge editing has been proposed as an effective method for updating and correcting the internal knowledge of Large Language Models (LLMs). However, existing editing methods often struggle with complex tasks, such as multi-hop reasoning.…

Computation and Language · Computer Science 2025-06-18 Mengqi Zhang , Xiaotian Ye , Qiang Liu , Pengjie Ren , Shu Wu , Zhumin Chen

Efficiently updating multilingual knowledge in large language models (LLMs), while preserving consistent factual representations across languages, remains a long-standing and unresolved challenge. While deploying separate editing systems…

Computation and Language · Computer Science 2025-06-13 Wei Sun , Tingyu Qu , Mingxiao Li , Jesse Davis , Marie-Francine Moens

Mixture-of-Experts (MoE) has demonstrated promising potential in scaling LLMs. However, it is hindered by two critical challenges: (1) substantial GPU memory consumption to load all experts; (2) low activated parameters cannot be…

Machine Learning · Computer Science 2025-08-05 Yuanteng Chen , Yuantian Shao , Peisong Wang , Jian Cheng

Previous studies on visual customization primarily rely on the objective alignment between various control signals (e.g., language, layout and canny) and the edited images, which largely ignore the subjective emotional contents, and more…

Computer Vision and Pattern Recognition · Computer Science 2026-02-23 Jiamin Luo , Xuqian Gu , Jingjing Wang , Jiahong Lu

Despite the ability to train capable LLMs, the methodology for maintaining their relevancy and rectifying errors remains elusive. To this end, the past few years have witnessed a surge in techniques for editing LLMs, the objective of which…

Computation and Language · Computer Science 2023-12-01 Yunzhi Yao , Peng Wang , Bozhong Tian , Siyuan Cheng , Zhoubo Li , Shumin Deng , Huajun Chen , Ningyu Zhang

Recently, there has been a growing interest in knowledge editing for Large Language Models (LLMs). Current approaches and evaluations merely explore the instance-level editing, while whether LLMs possess the capability to modify concepts…

Computation and Language · Computer Science 2024-10-08 Xiaohan Wang , Shengyu Mao , Ningyu Zhang , Shumin Deng , Yunzhi Yao , Yue Shen , Lei Liang , Jinjie Gu , Huajun Chen

Model editing aims to modify the outputs of large language models after they are trained. Previous approaches have often involved direct alterations to model weights, which can result in model degradation. Recent techniques avoid making…

Computation and Language · Computer Science 2025-10-10 Hammad Rizwan , Domenic Rosati , Ga Wu , Hassan Sajjad

Safety alignment in Large Language Models (LLMs) remains highly fragile during fine-tuning, where even benign adaptation can degrade pre-trained refusal behaviors and enable harmful responses. Existing defenses typically constrain either…

Artificial Intelligence · Computer Science 2026-04-15 Songping Peng , Zhiheng Zhang , Daojian Zeng , Lincheng Jiang , Xieping Gao

Large Language Models (LLMs) struggle with reliably generating highly structured outputs, such as program code, mathematical formulas, or well-formed markup. Constrained decoding approaches mitigate this problem by greedily restricting what…

Artificial Intelligence · Computer Science 2025-12-15 Kanghee Park , Jiayu Wang , Taylor Berg-Kirkpatrick , Nadia Polikarpova , Loris D'Antoni

Recent techniques such as retrieval-augmented generation or chain-of-thought reasoning have led to longer contexts and increased inference costs. Context compression techniques can reduce these costs, but the most effective approaches…

Computation and Language · Computer Science 2025-10-24 Hippolyte Pilchen , Edouard Grave , Patrick Pérez

Language models deployed in real-world systems often require post-hoc updates to incorporate new or corrected knowledge. However, editing such models efficiently and reliably-without retraining or forgetting previous information-remains a…

Computation and Language · Computer Science 2026-02-03 Ke Wang , Yiming Qin , Nikolaos Dimitriadis , Alessandro Favero , Pascal Frossard

Model editing has become an increasingly popular alternative for efficiently updating knowledge within language models. Current methods mainly focus on reliability, generalization, and locality, with many methods excelling across these…

Artificial Intelligence · Computer Science 2024-10-25 Qi Li , Xiang Liu , Zhenheng Tang , Peijie Dong , Zeyu Li , Xinglin Pan , Xiaowen Chu

Model editing aims to precisely alter the behaviors of large language models (LLMs) in relation to specific knowledge, while leaving unrelated knowledge intact. This approach has proven effective in addressing issues of hallucination and…

Computation and Language · Computer Science 2024-09-24 Derong Xu , Ziheng Zhang , Zhihong Zhu , Zhenxi Lin , Qidong Liu , Xian Wu , Tong Xu , Wanyu Wang , Yuyang Ye , Xiangyu Zhao , Enhong Chen , Yefeng Zheng

Recent improvements in the predictive quality of natural language processing systems are often dependent on a substantial increase in the number of model parameters. This has led to various attempts of compressing such models, but existing…

Computation and Language · Computer Science 2021-08-12 Guy Rotman , Amir Feder , Roi Reichart

Large language models (LLMs) often suffer from catastrophic forgetting in continual learning: after learning new tasks sequentially, they perform worse on earlier tasks. Existing methods mitigate catastrophic forgetting by data replay,…

Machine Learning · Computer Science 2026-05-08 Yazheng Liu , Yuxuan Wan , Rui Xu , Xi Zhang , Sihong Xie , Hui Xiong

Large Language Models (LLMs) have benefited enormously from scaling, yet these gains are bounded by five fundamental limitations: (1) hallucination, (2) context compression, (3) reasoning degradation, (4) retrieval fragility, and (5)…