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Large language models (LLMs) face significant challenges in handling long-context tasks because of their limited effective context window size during pretraining, which restricts their ability to generalize over extended sequences.…

Computation and Language · Computer Science 2024-09-05 Zhiyuan Hu , Yuliang Liu , Jinman Zhao , Suyuchen Wang , Yan Wang , Wei Shen , Qing Gu , Anh Tuan Luu , See-Kiong Ng , Zhiwei Jiang , Bryan Hooi

When applied to processing long text, Large Language Models (LLMs) are limited by their context window. Existing efforts to address this limitation involve training specialized architectures, and cannot be easily applied to off-the-shelf…

Computation and Language · Computer Science 2023-08-02 Nir Ratner , Yoav Levine , Yonatan Belinkov , Ori Ram , Inbal Magar , Omri Abend , Ehud Karpas , Amnon Shashua , Kevin Leyton-Brown , Yoav Shoham

The adoption of long context windows has become a standard feature in Large Language Models (LLMs), as extended contexts significantly enhance their capacity for complex reasoning and broaden their applicability across diverse scenarios.…

Computation and Language · Computer Science 2026-05-20 Wenxuan Li , Chengruidong Zhang , Huiqiang Jiang , Yucheng Li , Yuqing Yang , Lili Qiu

Large language models (LLMs) achieved remarkable performance across various tasks. However, they face challenges in managing long documents and extended conversations, due to significantly increased computational requirements, both in…

Computation and Language · Computer Science 2023-10-11 Yucheng Li , Bo Dong , Chenghua Lin , Frank Guerin

Autoregressive Transformers adopted in Large Language Models (LLMs) are hard to scale to long sequences. Despite several works trying to reduce their computational cost, most of LLMs still adopt attention layers between all pairs of tokens…

Computation and Language · Computer Science 2024-06-03 Sotiris Anagnostidis , Dario Pavllo , Luca Biggio , Lorenzo Noci , Aurelien Lucchi , Thomas Hofmann

Large Language Models (LLMs) exhibit emerging in-context learning abilities through prompt engineering. The recent progress in large-scale generative models has further expanded their use in real-world language applications. However, the…

Computation and Language · Computer Science 2024-04-12 Linyi Yang , Shuibai Zhang , Zhuohao Yu , Guangsheng Bao , Yidong Wang , Jindong Wang , Ruochen Xu , Wei Ye , Xing Xie , Weizhu Chen , Yue Zhang

The limited context window of contemporary large language models (LLMs) remains a primary bottleneck for their broader application across diverse domains. Although continual pre-training on long-context data offers a straightforward…

Computation and Language · Computer Science 2026-04-10 Wei Han , Pan Zhou , Soujanya Poria , Shuicheng Yan

Large Language Models (LLMs) based agents have demonstrated remarkable potential in autonomous task-solving across complex, open-ended environments. A promising approach for improving the reasoning capabilities of LLM agents is to better…

Computation and Language · Computer Science 2025-11-12 Siyu Xia , Zekun Xu , Jiajun Chai , Wentian Fan , Yan Song , Xiaohan Wang , Guojun Yin , Wei Lin , Haifeng Zhang , Jun Wang

Although large language models (LLMs) have achieved significant success in natural language processing, they still struggle with long-context comprehension. Traditional approaches to mitigating this issue typically rely on fine-tuning or…

Computation and Language · Computer Science 2025-02-25 Yifei Gao , Shaohong Chen , Lei Wang , Ruiting Dai , Ziyun Zhang , Kerui Ren , Jiaji Wu , Jun Cheng

Scaling language models to handle longer contexts introduces substantial memory challenges due to the growing cost of key-value (KV) caches. Motivated by the efficiency gains of hybrid models and the broad availability of pretrained large…

Computation and Language · Computer Science 2026-05-19 Xuan Zhang , Fengzhuo Zhang , Cunxiao Du , Chao Du , Tianyu Pang , Wei Gao , Min Lin

Large Language Models (LLMs) have garnered widespread attention due to their remarkable performance across various tasks. However, to mitigate the issue of hallucinations, LLMs often incorporate retrieval-augmented pipeline to provide them…

Computation and Language · Computer Science 2024-08-29 Haowen Hou , Fei Ma , Binwen Bai , Xinxin Zhu , Fei Yu

Large language models suffer issues when operated on long contexts that are larger than their training context length due to the standard position encoding for tokens in the attention layer. Tokens a long distance apart will rarely have an…

Computation and Language · Computer Science 2025-05-26 Phat Thanh Dang , Saahil Thoppay , Wang Yang , Qifan Wang , Vipin Chaudhary , Xiaotian Han

Large language models (LLMs) have revolutionized AI, but are constrained by limited context windows, hindering their utility in tasks like extended conversations and document analysis. To enable using context beyond limited context windows,…

Artificial Intelligence · Computer Science 2024-02-13 Charles Packer , Sarah Wooders , Kevin Lin , Vivian Fang , Shishir G. Patil , Ion Stoica , Joseph E. Gonzalez

When humans describe a visual scene, they do not process the entire image uniformly; instead, they selectively fixate on regions relevant to their intended description. In contrast, current multimodal large language models (MLLMs) attend to…

Computer Vision and Pattern Recognition · Computer Science 2026-05-14 Junha Song , Byeongho Heo , Geonmo Gu , Jaegul Choo , Dongyoon Han , Sangdoo Yun

Extending large language models (LLMs) to process longer inputs is crucial for a wide range of applications. However, the substantial computational cost of transformers and limited generalization of positional encoding restrict the size of…

Computation and Language · Computer Science 2025-06-11 Howard Yen , Tianyu Gao , Danqi Chen

Modern large language models (LLMs) that rely on attention mechanisms are typically trained with fixed context lengths which enforce upper limits on the length of input sequences that they can handle at evaluation time. To use these models…

Artificial Intelligence · Computer Science 2023-08-22 Arka Pal , Deep Karkhanis , Manley Roberts , Samuel Dooley , Arvind Sundararajan , Siddartha Naidu

With the rapid advancement of post-training techniques for reasoning and information seeking, large language models (LLMs) can incorporate a large quantity of retrieved knowledge to solve complex tasks. However, the limited context window…

Computation and Language · Computer Science 2026-04-21 Zijun Liu , Zhennan Wan , Peng Li , Ming Yan , Fei Huang , Yang Liu

Existing memory systems enable Large Language Models (LLMs) to support long-horizon human-LLM interactions by persisting historical interactions beyond limited context windows. However, while recent approaches have succeeded in constructing…

Computation and Language · Computer Science 2026-04-21 Haidong Xin , Xinze Li , Zhenghao Liu , Yukun Yan , Shuo Wang , Cheng Yang , Yu Gu , Ge Yu , Maosong Sun

Attention mechanisms have significantly advanced visual models by capturing global context effectively. However, their reliance on large-scale datasets and substantial computational resources poses challenges in data-scarce and…

Computer Vision and Pattern Recognition · Computer Science 2024-12-03 Chenghao Li , Chaoning Zhang , Boheng Zeng , Yi Lu , Pengbo Shi , Qingzi Chen , Jirui Liu , Lingyun Zhu , Yang Yang , Heng Tao Shen

The quadratic computational complexity of standard attention mechanisms presents a severe scalability bottleneck for LLMs in long-context scenarios. While hybrid attention mechanisms combining Full Attention (FA) and Sparse Attention (SA)…

Machine Learning · Computer Science 2026-04-10 Quantong Qiu , Zhiyi Hong , Yi Yang , Haitian Wang , Kebin Liu , Qingqing Dang , Juntao Li , Min Zhang