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Large Language Model (LLM) agents significantly extend the capabilities of standalone LLMs, empowering them to interact with external tools (e.g., APIs, functions) and complete various tasks in a self-directed fashion. The challenge of tool…

Artificial Intelligence · Computer Science 2024-02-19 Weizhou Shen , Chenliang Li , Hongzhan Chen , Ming Yan , Xiaojun Quan , Hehong Chen , Ji Zhang , Fei Huang

Large Language Model (LLM) agents increasingly use external tools for complex tasks and rely on embedding-based retrieval to select a small top-k subset for reasoning. As these systems scale, the robustness of this retrieval stage is…

Computation and Language · Computer Science 2026-03-17 Hussein Jawad , Nicolas J-B Brunel

There emerges a promising trend of using large language models (LLMs) to generate code-like plans for complex inference tasks such as visual reasoning. This paradigm, known as LLM-based planning, provides flexibility in problem solving and…

Computation and Language · Computer Science 2023-08-22 Pengbo Hu , Ji Qi , Xingyu Li , Hong Li , Xinqi Wang , Bing Quan , Ruiyu Wang , Yi Zhou

Multi-step tool orchestration remains challenging for LLMs, as state-of-the-art models frequently fail on full sequence execution due to parameter errors. Training for these workflows faces two obstacles: the lack of environments supporting…

Machine Learning · Computer Science 2026-04-08 Cheng Jiayang , Xin Liu , Zhihan Zhang , Haoyang Wen , Zixuan Zhang , Qingyu Yin , Shiyang Li , Priyanka Nigam , Bing Yin , Chao Zhang , Yangqiu Song

Training LLMs to invoke tools and leverage retrieved information necessitates high-quality, diverse data. However, existing pipelines for synthetic data generation often rely on tens of thousands of real API calls to enhance generalization,…

Artificial Intelligence · Computer Science 2025-12-19 Hao Chen , Zhexin Hu , Jiajun Chai , Haocheng Yang , Hang He , Xiaohan Wang , Wei Lin , Luhang Wang , Guojun Yin , Zhuofeng zhao

Reasoning-augmented search agents such as Search-R1, trained via reinforcement learning with verifiable rewards (RLVR), demonstrate remarkable capabilities in multi-step information retrieval from external knowledge sources. These agents…

Computation and Language · Computer Science 2025-08-14 Shu Zhao , Tan Yu , Anbang Xu , Japinder Singh , Aaditya Shukla , Rama Akkiraju

In data exploration, executing complex non-aggregate queries over large databases can be time-consuming. Our paper introduces a novel approach to address this challenge, focusing on finding an optimized subset of data, referred to as the…

Databases · Computer Science 2024-01-31 Susan B. Davidson , Tova Milo , Kathy Razmadze , Gal Zeevi

Deep search agents have proven effective in enhancing LLMs by retrieving external knowledge during multi-step reasoning. However, existing methods often generate a single query for retrieval at each reasoning step, limiting information…

Artificial Intelligence · Computer Science 2026-05-14 Jiabei Liu , Wenyu Mao , Junfei Tan , Chunxu Shen , Lingling Yi , Jiancan Wu , Xiang Wang

Link-Traversal-Based Query Processing (LTBQP) is a technique for evaluating queries over a web of data by starting with a set of seed documents that is dynamically expanded through following hyperlinks. Compared to query evaluation over a…

Databases · Computer Science 2020-05-06 Ruben Verborgh , Ruben Taelman

Issue localization, the process of identifying code locations that need modification to resolve software issues, is a critical yet challenging task in software development. The semantic gap between natural language issue descriptions and…

Software Engineering · Computer Science 2025-08-07 Zexiong Ma , Chao Peng , Qunhong Zeng , Pengfei Gao , Yanzhen Zou , Bing Xie

Integrating external tools enables Large Language Models (LLMs) to interact with real-world environments and solve complex tasks. Given the growing scale of available tools, effective tool retrieval is essential to mitigate constraints of…

Information Retrieval · Computer Science 2026-02-06 Yichen Tang , Weihang Su , Yiqun Liu , Qingyao Ai

Recently, tool-augmented LLMs have gained increasing attention. Given an instruction, tool-augmented LLMs can interact with various external tools in multiple rounds and provide a final answer. However, previous LLMs were trained on overly…

Computation and Language · Computer Science 2024-11-05 Qinzhuo Wu , Wei Liu , Jian Luan , Bin Wang

Retrieval-Augmented Generation (RAG) based on Large Language Models (LLMs) is a powerful solution to understand and query the industry's closed-source documents. However, basic RAG often struggles with complex QA tasks in legal and…

Information Retrieval · Computer Science 2025-09-08 Huifeng Lin , Gang Su , Jintao Liang , You Wu , Rui Zhao , Ziyue Li

Large language models (LLMs) have demonstrated exceptional reasoning capabilities, enabling them to solve various complex problems. Recently, this ability has been applied to the paradigm of tool learning. Tool learning involves providing…

Artificial Intelligence · Computer Science 2025-08-18 Yanming Liu , Xinyue Peng , Jiannan Cao , Yuwei Zhang , Xuhong Zhang , Sheng Cheng , Xun Wang , Jianwei Yin , Tianyu Du

Recent advances in large language models (LLMs) have enabled autonomous agents with complex reasoning and task-fulfillment capabilities using a wide range of tools. However, effectively identifying the most relevant tools for a given task…

Tool calling has greatly expanded the practical utility of large language models (LLMs) by enabling them to interact with external applications. As LLM capabilities advance, effective tool use increasingly involves multi-step, multi-turn…

Computation and Language · Computer Science 2026-05-29 Heming Xia , Yongqi Li , Cunxiao Du , Mingbo Song , Wenjie Li

Recent studies have explored integrating large language models (LLMs) into recommendation systems but face several challenges, including training-induced bias and bottlenecks from serialized architecture. To effectively address these…

Information Retrieval · Computer Science 2025-09-16 Donghee Han , Hwanjun Song , Mun Yong Yi

We present QueryGym, a lightweight, extensible Python toolkit that supports large language model (LLM)-based query reformulation. This is an important tool development since recent work on llm-based query reformulation has shown notable…

Information Retrieval · Computer Science 2025-11-21 Amin Bigdeli , Radin Hamidi Rad , Mert Incesu , Negar Arabzadeh , Charles L. A. Clarke , Ebrahim Bagheri

Effective query expansion for web search benefits from promoting both exploration and result diversity to capture multiple interpretations and facets of a query. While recent LLM-based methods have improved retrieval performance and…

Information Retrieval · Computer Science 2026-03-11 Yibin Lei , Tao Shen , Andrew Yates

Querying on big data is a challenging task due to the rapid growth of data amount. Approximate query processing (AQP) is a way to meet the requirement of fast response. In this paper, we propose a learning-based AQP method called the LAQP.…

Databases · Computer Science 2020-03-06 Meifan Zhang , Hongzhi Wang