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Large Language Models (LLMs) increasingly serve as autonomous reasoning agents in decision support, scientific problem-solving, and multi-agent coordination systems. However, deploying LLM agents in consequential applications requires…

Artificial Intelligence · Computer Science 2026-03-17 I. de Zarzà , J. de Curtò , Jordi Cabot , Pietro Manzoni , Carlos T. Calafate

Standard Retrieval Augmented Generation (RAG) is poorly matched to agent memory. Unlike large heterogeneous corpora, agent memory forms a bounded and coherent interaction stream in which many spans are highly correlated or near duplicates.…

Computation and Language · Computer Science 2026-05-13 Zhanghao Hu , Qinglin Zhu , Runcong Zhao , Di Liang , Hanqi Yan , Yulan He , Lin Gui

Listwise reranking utilizing Large Language Models (LLMs) has achieved state-of-the-art retrieval effectiveness. Recently, reasoning-enhanced models have further pushed these boundaries by employing Chain-of-Thought (CoT) to perform deep…

Information Retrieval · Computer Science 2026-05-15 Danyang Liu , Kan Li

As LLM-driven autonomous agents evolve to perform complex, multi-step tasks that require integrating multiple datasets, the problem of discovering relevant data sources becomes a key bottleneck. Beyond the challenge posed by the sheer…

Databases · Computer Science 2026-04-23 Jiani Zhang , Sercan O. Arik , Cosmin Arad , Fatma Ozcan , Alon Halevy

As retrieval models converge on generic benchmarks, the pressing question is no longer "who scores higher" but rather "where do systems fail, and why?" Person-job matching is a domain that urgently demands such diagnostic capability -- it…

Information Retrieval · Computer Science 2026-03-19 Guangzhi Wang , Xiaohui Yang , Kai Li , Jiawen He , Kai Yang , Ruixuan Zhang , Zhi Liu

Financial analysts face significant challenges extracting information from lengthy 10-K reports, which often exceed 100 pages. This paper presents a Retrieval-Augmented Generation (RAG) system designed to answer questions about S&P 500…

Computation and Language · Computer Science 2026-04-29 Zhiyuan Cheng , Longying Lai , Yue Liu , Kai Cheng , Xiaoxi Qi

Retrieval-Augmented Generation (RAG) has become critical for knowledge-intensive applications, yet evaluating its performance in vertical domains remains difficult due to domain complexity, diverse context scales, and heavy reliance on…

Computation and Language · Computer Science 2026-05-27 Jingbin Qian , Congwen Yi , Min Xia , Wen Wu , Jun Zhu , Jian Guan

Memory mechanism is a core component of LLM-based agents, enabling reasoning and knowledge discovery over long-horizon contexts. Existing agent memory systems are typically designed within isolated paradigms (e.g., explicit, parametric, or…

Artificial Intelligence · Computer Science 2026-02-10 Xin Zhang , Kailai Yang , Chenyue Li , Hao Li , Qiyu Wei , Jun'ichi Tsujii , Sophia Ananiadou

Retrieval-Augmented Generation (RAG) couples a retriever with a large language model (LLM) to ground generated responses in external evidence. While this framework enhances factuality and domain adaptability, it faces a key bottleneck:…

Information Retrieval · Computer Science 2026-01-08 Sherine George

Agentic Reinforcement Learning (Agentic RL) has achieved notable success in enabling agents to perform complex reasoning and tool use. However, most methods still relies on sparse outcome-based reward for training. Such feedback fails to…

Artificial Intelligence · Computer Science 2026-04-29 Kaixuan Fan , Kaituo Feng , Manyuan Zhang , Tianshuo Peng , Zhixun Li , Yilei Jiang , Shuang Chen , Peng Pei , Xunliang Cai , Xiangyu Yue

Large language model (LLM) agents increasingly operate in settings where a single context window is far too small to capture what has happened, what was learned, and what should not be repeated. Memory -- the ability to persist, organize,…

Artificial Intelligence · Computer Science 2026-03-10 Pengfei Du

With the increasing demand for step-wise, cross-modal, and knowledge-grounded reasoning, multimodal large language models (MLLMs) are evolving beyond the traditional fixed retrieve-then-generate paradigm toward more sophisticated agentic…

Artificial Intelligence · Computer Science 2026-03-03 Xuying Ning , Dongqi Fu , Tianxin Wei , Mengting Ai , Jiaru Zou , Ting-Wei Li , Hanghang Tong , Yada Zhu , Hendrik Hamann , Jingrui He

Large Language Models (LLMs) have been integrated into recommender systems to enhance user behavior comprehension. The Retrieval Augmented Generation (RAG) technique is further incorporated into these systems to retrieve more relevant items…

Information Retrieval · Computer Science 2025-03-27 Sichun Luo , Jian Xu , Xiaojie Zhang , Linrong Wang , Sicong Liu , Hanxu Hou , Linqi Song

Efficiently reranking documents retrieved from information retrieval (IR) pipelines to enhance overall quality of Retrieval-Augmented Generation (RAG) system remains an important yet challenging problem. Recent studies have highlighted the…

Computation and Language · Computer Science 2025-11-12 Jingyu Wu , Aditya Shrivastava , Jing Zhu , Alfy Samuel , Anoop Kumar , Daben Liu

Effective long-term memory management is crucial for language models handling extended contexts. We introduce the Enhanced Ranked Memory Augmented Retrieval (ERMAR) framework, which dynamically ranks memory entries based on relevance.…

Information Retrieval · Computer Science 2026-05-19 Ghadir Alselwi , Hao Xue , Shoaib Jameel , Basem Suleiman , Flora D. Salim , Imran Razzak

Reasoning is a fundamental cognitive process underlying inference, problem-solving, and decision-making. While large language models (LLMs) demonstrate strong reasoning capabilities in closed-world settings, they struggle in open-ended and…

Dialog response ranking is used to rank response candidates by considering their relation to the dialog history. Although researchers have addressed this concept for open-domain dialogs, little attention has been focused on task-oriented…

Computation and Language · Computer Science 2018-11-29 Junki Ohmura , Maxine Eskenazi

Similar question retrieval is a core task in community-based question answering (CQA) services. To balance the effectiveness and efficiency, the question retrieval system is typically implemented as multi-stage rankers: The first-stage…

Information Retrieval · Computer Science 2021-07-20 Yinqiong Cai , Yixing Fan , Jiafeng Guo , Ruqing Zhang , Yanyan Lan , Xueqi Cheng

Conversational assistants powered by large language models (LLMs) excel at tool-use tasks but struggle with adhering to complex, business-specific rules. While models can reason over business rules provided in context, including all…

Computation and Language · Computer Science 2026-03-24 Shubhashis Roy Dipta , Daniel Bis , Kun Zhou , Lichao Wang , Benjamin Z. Yao , Chenlei Guo , Ruhi Sarikaya

In medical scenarios, effectively retrieving external knowledge and leveraging it for rigorous logical reasoning is of significant importance. Despite their potential, existing work has predominantly focused on enhancing either retrieval or…

Computation and Language · Computer Science 2026-01-21 Keer Lu , Zheng Liang , Youquan Li , Jiejun Tan , Xili Wang , Da Pan , Shusen Zhang , Guosheng Dong , Bin Cui , Yunhuai Liu , Wentao Zhang
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