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Retrieval-augmented generation (RAG) extends large language models (LLMs) with external knowledge, but it must balance limited effective context, redundant retrieved evidence, and the loss of fine-grained facts under aggressive compression.…

Computation and Language · Computer Science 2026-04-24 Yiqiao Jin , Rachneet Kaur , Zhen Zeng , Sumitra Ganesh , Srijan Kumar

Retrieval-Augmented Generation (RAG) systems are showing promising potential, and are becoming increasingly relevant in AI-powered legal applications. Existing benchmarks, such as LegalBench, assess the generative capabilities of Large…

Artificial Intelligence · Computer Science 2024-08-21 Nicholas Pipitone , Ghita Houir Alami

Large Language Models (LLMs) often exhibit substantially shorter effective context lengths than their claimed capacities, especially when handling complex reasoning tasks that require integrating information from multiple parts of a long…

Computation and Language · Computer Science 2025-03-14 Yuwei Zhang , Jayanth Srinivasa , Gaowen Liu , Jingbo Shang

Effective conversational search demands a deep understanding of user intent across multiple dialogue turns. Users frequently use abbreviations and shift topics in the middle of conversations, posing challenges for conventional retrievers.…

Information Retrieval · Computer Science 2025-09-25 Seunghan Yang , Juntae Lee , Jihwan Bang , Kyuhong Shim , Minsoo Kim , Simyung Chang

This paper focuses on task-agnostic prompt compression for better generalizability and efficiency. Considering the redundancy in natural language, existing approaches compress prompts by removing tokens or lexical units according to their…

Recent dialogue systems rely on turn-based spoken interactions, requiring accurate Automatic Speech Recognition (ASR). Errors in ASR can significantly impact downstream dialogue tasks. To address this, using dialogue context from user and…

Computation and Language · Computer Science 2024-08-13 Wonjun Lee , San Kim , Gary Geunbae Lee

Retrieval-Augmented Generation (RAG) utilizes external knowledge to augment Large Language Models' (LLMs) reliability. For flexibility, agentic RAG employs autonomous, multi-round retrieval and reasoning to resolve queries. Although recent…

Information Retrieval · Computer Science 2025-11-10 Chao Zhang , Yuhao Wang , Derong Xu , Haoxin Zhang , Yuanjie Lyu , Yuhao Chen , Shuochen Liu , Tong Xu , Xiangyu Zhao , Yan Gao , Yao Hu , Enhong Chen

Modern Large Language Models (LLMs) are increasingly trained to support very large context windows. We present Compactor, a training-free, query-agnostic KV compression strategy that uses approximate leverage scores to determine token…

Computation and Language · Computer Science 2025-12-10 Vivek Chari , Benjamin Van Durme

This study investigates the reasoning robustness of large language models (LLMs) on mathematical problem-solving tasks under systematically introduced input perturbations. Using the GSM8K dataset as a controlled testbed, we evaluate how…

Artificial Intelligence · Computer Science 2025-04-04 Giannis Chatziveroglou , Richard Yun , Maura Kelleher

Large Language Models (LLMs) achieve strong performance across many tasks but suffer from high inference latency due to autoregressive decoding. The issue is exacerbated in Large Reasoning Models (LRMs), which generate lengthy chains of…

Computation and Language · Computer Science 2026-02-05 Ximing Dong , Shaowei Wang , Dayi Lin , Boyuan Chen , Ahmed E. Hassan

Prompt compression condenses contexts while maintaining their informativeness for different usage scenarios. It not only shortens the inference time and reduces computational costs during the usage of large language models, but also lowers…

Computation and Language · Computer Science 2024-10-21 Xiao Pu , Tianxing He , Xiaojun Wan

Bearing in mind the limited parametric knowledge of Large Language Models (LLMs), retrieval-augmented generation (RAG) which supplies them with the relevant external knowledge has served as an approach to mitigate the issue of…

Computation and Language · Computer Science 2025-01-10 Hanna Zubkova , Ji-Hoon Park , Seong-Whan Lee

In this paper, we study whether an off-the-shelf LLM can be adapted into a discrete, variable-length token compressor and decompressor for long-context processing. To this end, we design a self-expressive autoencoding framework that…

Computation and Language · Computer Science 2026-05-14 Wenbing Li , Yiran Wang , Zikai Song , Jielei Zhang , Tianhao Zhao , Junkai Lin , Wei Yang

As large language models (LLMs) take on complex tasks, their inputs are supplemented with longer contexts that incorporate domain knowledge. Yet using long contexts is challenging, as nothing can be generated until the whole context is…

Retrieval-Augmented Generation (RAG) has emerged as a promising paradigm for improving the timeliness of knowledge updates and the factual accuracy of large language models. However, incorporating a large volume of retrieved documents…

Computation and Language · Computer Science 2026-05-29 Ziqiang Cui , Yunpeng Weng , Xing Tang , Peiyang Liu , Shiwei Li , Bowei He , Jiamin Chen , Yansen Zhang , Xiuqiang He , Chen Ma

LLM-based agents show strong potential for long-horizon reasoning, yet their context size is limited by deployment factors (e.g., memory, latency, and cost), yielding a constrained context budget. As interaction histories grow, this induces…

Artificial Intelligence · Computer Science 2026-04-03 Yong Wu , YanZhao Zheng , TianZe Xu , ZhenTao Zhang , YuanQiang Yu , JiHuai Zhu , Chao Ma , BinBin Lin , BaoHua Dong , HangCheng Zhu , RuoHui Huang , Gang Yu

In the framework of learned image compression, the context model plays a pivotal role in capturing the dependencies among latent representations. To reduce the decoding time resulting from the serial autoregressive context model, the…

Image and Video Processing · Electrical Eng. & Systems 2023-12-01 Yang Sui , Ding Ding , Xiang Pan , Xiaozhong Xu , Shan Liu , Bo Yuan , Zhenzhong Chen

Efficient long-context processing remains a crucial challenge for contemporary large language models (LLMs), especially in resource-constrained environments. Soft compression architectures promise to extend effective context length by…

Computation and Language · Computer Science 2026-02-16 Julia Belikova , Danila Rozhevskii , Dennis Svirin , Konstantin Polev , Alexander Panchenko

Incorporating external knowledge in large language models (LLMs) enhances their utility across diverse applications, but existing methods have trade-offs. Retrieval-Augmented Generation (RAG) fetches evidence via similarity search, but key…

Computation and Language · Computer Science 2025-03-10 Giulio Corallo , Orion Weller , Fabio Petroni , Paolo Papotti

Large language models (LLMs) exhibiting test-time scaling behavior, such as extended reasoning traces and self-verification, have demonstrated remarkable performance on complex, long-term reasoning tasks. However, the robustness of these…

Machine Learning · Computer Science 2026-04-02 Gleb Rodionov