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Retrieval-Augmented Generation (RAG) systems enhance large language models (LLMs) by integrating external knowledge sources, enabling more accurate and contextually relevant responses tailored to user needs. However, existing RAG systems…

Information Retrieval · Computer Science 2025-04-29 Zirui Guo , Lianghao Xia , Yanhua Yu , Tu Ao , Chao Huang

Retrieval-Augmented Generation (RAG) effectively enhances Large Language Models (LLMs) by incorporating retrieved external knowledge into the generation process. Reasoning models improve LLM performance in multi-hop QA tasks, which require…

Computation and Language · Computer Science 2026-01-21 Guo Chen , Junjie Huang , Huaijin Xie , Fei Sun , Tao Jia

Knowledge augmentation has significantly enhanced the performance of Large Language Models (LLMs) in knowledge-intensive tasks. However, existing methods typically operate on the simplistic premise that model performance equates with…

Computation and Language · Computer Science 2026-02-16 Hao Chen , Ye He , Yuchun Fan , Yukun Yan , Zhenghao Liu , Qingfu Zhu , Maosong Sun , Wanxiang Che

Large Language Models (LLMs) need to be in accordance with human values-being helpful, harmless, and honest (HHH)-is important for safe deployment. Existing works use Supervised Fine-Tuning (SFT) and Mixture-of-Experts (MoE) to align LLMs.…

Computation and Language · Computer Science 2026-02-10 Gautam Siddharth Kashyap , Mark Dras , Usman Naseem

Knowledge Editing is a technique that updates large language models (LLMs) with new information to maintain their world knowledge. This approach avoids the need to rebuild the model from scratch, thereby addressing the high costs associated…

Computation and Language · Computer Science 2025-09-09 Changyue Wang , Weihang Su , Qingyao Ai , Yichen Tang , Yiqun Liu

Key-Value (KV) cache memory and bandwidth increasingly dominate large language model inference cost in long-context and long-generation regimes. Architectures such as multi-head latent attention (MLA) and hybrid sliding-window attention…

Computation and Language · Computer Science 2026-04-08 Zhen Cheng , Hao-Bo Yang , Wan-Yi Huang , Jin-Long Li

Large Language Models (LLMs) demonstrate exceptional performance in textual understanding and tabular reasoning tasks. However, their ability to comprehend and analyze hybrid text, containing textual and tabular data, remains unexplored.…

Computation and Language · Computer Science 2025-01-03 Chongjian Yue , Xinrun Xu , Xiaojun Ma , Lun Du , Zhiming Ding , Shi Han , Dongmei Zhang , Qi Zhang

Large Language Models (LLMs) based on autoregressive, decoder-only Transformers generate text one token at a time, where a token represents a discrete unit of text. As each newly produced token is appended to the partial output sequence,…

Distributed, Parallel, and Cluster Computing · Computer Science 2025-05-06 Dimitrios Kafetzis , Ramin Khalili , Iordanis Koutsopoulos

Although LLM agents can leverage tools for complex tasks, they still need memory to maintain cross-turn consistency and accumulate reusable information in long-horizon interactions. However, retrieval-based external memory systems incur low…

Artificial Intelligence · Computer Science 2026-04-23 Jiaquan Zhang , Chaoning Zhang , Shuxu Chen , Zhenzhen Huang , Pengcheng Zheng , Zhicheng Wang , Ping Guo , Fan Mo , Sung-Ho Bae , Jie Zou , Jiwei Wei , Yang Yang

The widespread adoption of large language models (LLMs) has made it difficult to distinguish human writing from machine-produced text in many real applications. Detectors that were effective for one generation of models tend to degrade when…

Computation and Language · Computer Science 2025-12-09 Sepyan Purnama Kristanto , Lutfi Hakim , Dianni Yusuf

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

Multi-step agentic retrieval systems based on large language models (LLMs) have demonstrated remarkable performance in complex information search tasks. However, these systems still face significant challenges in practical applications,…

Machine Learning · Computer Science 2025-10-16 Chuzhan Hao , Wenfeng Feng , Yuewei Zhang , Hao Wang

Large language models are often expected to constantly adapt to new sources of knowledge and knowledge editing techniques aim to efficiently patch the outdated model knowledge, with minimal modification. Most prior works focus on…

Computation and Language · Computer Science 2025-02-18 Aditi Khandelwal , Harman Singh , Hengrui Gu , Tianlong Chen , Kaixiong Zhou

Multimodal document question answering requires retrieving dispersed evidence from visually rich long documents and performing reliable reasoning over heterogeneous information. Existing multimodal RAG systems remain limited by two…

Information Retrieval · Computer Science 2026-03-18 Jiashu Yang , Chi Zhang , Abudukelimu Wuerkaixi , Xuxin Cheng , Cao Liu , Ke Zeng , Xu Jia , Xunliang Cai

Equipping large language models (LLMs) with latent-space memory has attracted increasing attention as they can extend the context window of existing language models. However, retaining information from the distant past remains a challenge.…

Computation and Language · Computer Science 2025-06-02 Yu Wang , Dmitry Krotov , Yuanzhe Hu , Yifan Gao , Wangchunshu Zhou , Julian McAuley , Dan Gutfreund , Rogerio Feris , Zexue He

Large Language Models (LLMs) have demonstrated strong reasoning capabilities across various tasks. However, even minor variations in query phrasing, despite preserving the underlying semantic meaning, can significantly affect their…

Computation and Language · Computer Science 2025-02-26 Yihang Yao , Zhepeng Cen , Miao Li , William Han , Yuyou Zhang , Emerson Liu , Zuxin Liu , Chuang Gan , Ding Zhao

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

Large Language Models~(LLMs) struggle with providing current information due to the outdated pre-training data. Existing methods for updating LLMs, such as knowledge editing and continual fine-tuning, have significant drawbacks in…

Computation and Language · Computer Science 2024-02-12 Pengfei Yu , Heng Ji

With the breakthroughs in large language models (LLMs), query generation techniques that expand documents and queries with related terms are becoming increasingly popular in the information retrieval field. Such techniques have been shown…

Information Retrieval · Computer Science 2025-07-16 Adam Yang , Gustavo Penha , Enrico Palumbo , Hugues Bouchard

Clinical text improvement is vital for healthcare efficiency but remains difficult due to limited high-quality data and the complex constraints of medical documentation. While Large Language Models (LLMs) show promise, current approaches…

Computation and Language · Computer Science 2026-02-03 Ziyan Xiao , Yinghao Zhu , Liang Peng , Lequan Yu