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Contextual Markov Decision Processes (CMDPs) offer a framework for sequential decision-making under external signals, but existing methods often fail to generalize in high-dimensional or unstructured contexts, resulting in excessive…

Artificial Intelligence · Computer Science 2025-10-06 Peidong Liu , Junjiang Lin , Shaowen Wang , Yao Xu , Haiqing Li , Xuhao Xie , Siyi Wu , Hao Li

Question Answering (QA) accounts for a significant portion of LLM usage "in the wild". However, LLMs sometimes produce false or misleading responses, also known as "hallucinations". Therefore, grounding the generated answers in contextually…

This work focuses on the task of query-based meeting summarization in which the summary of a context (meeting transcript) is generated in response to a specific query. When using Large Language Models (LLMs) for this task, usually a new…

Computation and Language · Computer Science 2024-10-22 Md Tahmid Rahman Laskar , Elena Khasanova , Xue-Yong Fu , Cheng Chen , Shashi Bhushan TN

Retrieval-augmented generation (RAG) and long-context language models (LCLMs) both address context limitations of LLMs in open-domain question answering (QA). However, optimal external context to retrieve remains an open problem: fixing the…

Computation and Language · Computer Science 2025-10-01 Chihiro Taguchi , Seiji Maekawa , Nikita Bhutani

Question Answering (QA) in NLP is the task of finding answers to a query within a relevant context retrieved by a retrieval system. Yet, the mix of relevant and irrelevant information in these contexts can hinder performance enhancements in…

Computation and Language · Computer Science 2024-12-17 Sangryul Kim , James Thorne

Long-context modeling capabilities have garnered widespread attention, leading to the emergence of Large Language Models (LLMs) with ultra-context windows. Meanwhile, benchmarks for evaluating long-context LLMs are gradually catching up.…

Computation and Language · Computer Science 2024-10-04 Minzheng Wang , Longze Chen , Cheng Fu , Shengyi Liao , Xinghua Zhang , Bingli Wu , Haiyang Yu , Nan Xu , Lei Zhang , Run Luo , Yunshui Li , Min Yang , Fei Huang , Yongbin Li

Large language models (LLMs) have demonstrated remarkable progress in understanding long-context inputs. However, benchmarks for evaluating the long-context reasoning abilities of LLMs fall behind the pace. Existing benchmarks often focus…

Computation and Language · Computer Science 2025-11-19 Zhan Ling , Kang Liu , Kai Yan , Yifan Yang , Weijian Lin , Ting-Han Fan , Lingfeng Shen , Zhengyin Du , Jiecao Chen

Generative AI and LLMs in particular are heavily used nowadays for various document processing tasks such as question answering and summarization. However, different LLMs come with different capabilities for different tasks as well as with…

Computation and Language · Computer Science 2024-02-06 Shivanshu Shekhar , Tanishq Dubey , Koyel Mukherjee , Apoorv Saxena , Atharv Tyagi , Nishanth Kotla

This study leverages optimized context retrieval to enhance open-source Large Language Models (LLMs) for cost-effective, high performance healthcare AI. We demonstrate that this approach achieves state-of-the-art accuracy on medical…

Artificial Intelligence · Computer Science 2025-04-04 Jordi Bayarri-Planas , Ashwin Kumar Gururajan , Dario Garcia-Gasulla

Customer-service question answering (QA) systems increasingly rely on conversational language understanding. While Large Language Models (LLMs) achieve strong performance, their high computational cost and deployment constraints limit…

Computation and Language · Computer Science 2026-05-04 Lakshan Cooray , Deshan Sumanathilaka , Pattigadapa Venkatesh Raju

The rapid increase in textual information means we need more efficient methods to sift through, organize, and understand it all. While retrieval-augmented generation (RAG) models excel in accessing information from large document…

Computation and Language · Computer Science 2025-03-14 Seiji Maekawa , Hayate Iso , Nikita Bhutani

Biomedical question answering (QA) poses significant challenges due to the need for precise interpretation of specialized knowledge drawn from a vast, complex, and rapidly evolving corpus. In this work, we explore how large language models…

Computation and Language · Computer Science 2025-09-11 Dima Galat , Diego Molla-Aliod

Long-context large language models (LLMs) hold promise for tasks such as question-answering (QA) over long documents, but they tend to miss important information in the middle of context documents (arXiv:2307.03172v3). Here, we introduce…

Computation and Language · Computer Science 2024-03-11 Devanshu Agrawal , Shang Gao , Martin Gajek

Large language models (LLMs) are increasingly strong contenders in machine translation. In this work, we focus on document-level translation, where some words cannot be translated without context from outside the sentence. Specifically, we…

Computation and Language · Computer Science 2025-02-17 Wafaa Mohammed , Vlad Niculae

Large Language Models (LLMs) have demonstrated remarkable capabilities in handling long texts and have almost perfect performance in traditional retrieval tasks. However, their performance significantly degrades when it comes to numerical…

Computation and Language · Computer Science 2024-12-05 Yijiong Yu

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

Recent developments in text classification using Large Language Models (LLMs) in the social sciences suggest that costs can be cut significantly, while performance can sometimes rival existing computational methods. However, with a wide…

Computation and Language · Computer Science 2026-03-27 Erkan Gunes , Christoffer Florczak , Tevfik Murat Yildirim

Large language models (LLMs) demonstrate remarkable medical expertise, but data privacy concerns impede their direct use in healthcare environments. Although offering improved data privacy protection, domain-specific small language models…

Computation and Language · Computer Science 2024-05-17 Xinlu Zhang , Shiyang Li , Xianjun Yang , Chenxin Tian , Yao Qin , Linda Ruth Petzold

Emerging Large Language Model (LLM) applications require long input context in order to perform complex tasks like document analysis and code generation. For these long context length applications, the length of the input prompt poses a…

The rapid increase in unstructured data across various fields has made multi-document comprehension and summarization a critical task. Traditional approaches often fail to capture relevant context, maintain logical consistency, and extract…

Computation and Language · Computer Science 2024-09-30 Aditi Godbole , Jabin Geevarghese George , Smita Shandilya