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Multi-hop reading comprehension (MHRC) requires not only to predict the correct answer span in the given passage, but also to provide a chain of supporting evidences for reasoning interpretability. It is natural to model such a process into…

Computation and Language · Computer Science 2021-07-27 Bohong Wu , Zhuosheng Zhang , Hai Zhao

Multimodal Multi-hop question answering requires integrating information from diverse sources, such as images and texts, to derive answers. Existing methods typically rely on sequential retrieval and reasoning, where each step builds on the…

Artificial Intelligence · Computer Science 2025-09-22 Yiheng Hu , Xiaoyang Wang , Qing Liu , Xiwei Xu , Qian Fu , Wenjie Zhang , Liming Zhu

Retrieval-Augmented Generation (RAG) systems often struggle with imperfect retrieval, as traditional retrievers focus on lexical or semantic similarity rather than logical relevance. To address this, we propose \textbf{HopRAG}, a novel RAG…

Information Retrieval · Computer Science 2025-05-27 Hao Liu , Zhengren Wang , Xi Chen , Zhiyu Li , Feiyu Xiong , Qinhan Yu , Wentao Zhang

Retrieval-augmented generation (RAG) encounters challenges when addressing complex queries, particularly multi-hop questions. While several methods tackle multi-hop queries by iteratively generating internal queries and retrieving external…

Computation and Language · Computer Science 2026-01-30 Jiaen Lin , Jingyu Liu , Yingbo Liu

Language-based agentic systems have shown great promise in recent years, transitioning from solving small-scale research problems to being deployed in challenging real-world tasks. However, optimizing these systems often requires…

Artificial Intelligence · Computer Science 2024-12-06 Wenyi Wang , Hisham A. Alyahya , Dylan R. Ashley , Oleg Serikov , Dmitrii Khizbullin , Francesco Faccio , Jürgen Schmidhuber

Graph Retrieval-Augmented Generation (Graph RAG) effectively builds a knowledge graph (KG) to connect disparate facts across a large document corpus. However, this broad-view approach often lacks the deep structured reasoning needed for…

Computation and Language · Computer Science 2025-10-27 Jiaoyang Li , Junhao Ruan , Shengwei Tang , Saihan Chen , Kaiyan Chang , Yuan Ge , Tong Xiao , Jingbo Zhu

Semantic search in retrieval-augmented generation (RAG) systems is often insufficient for complex information needs, particularly when relevant evidence is scattered across multiple sources. Prior approaches to this problem include agentic…

Machine Learning · Computer Science 2026-03-27 Ruizhong Miao , Yuying Wang , Rongguang Wang , Chenyang Li , Tao Sheng , Sujith Ravi , Dan Roth

We introduce Agentic Reasoning, a framework that enhances large language model (LLM) reasoning by integrating external tool-using agents. Agentic Reasoning dynamically leverages web search, code execution, and structured memory to address…

Artificial Intelligence · Computer Science 2025-07-16 Junde Wu , Jiayuan Zhu , Yuyuan Liu , Min Xu , Yueming Jin

Knowledge Graphs (KGs) serve as a critical foundation for AI systems, yet their automated construction inevitably introduces noise, compromising data trustworthiness. Existing triple verification methods, based on graph embeddings or…

Artificial Intelligence · Computer Science 2026-04-07 Xinyan Ma , Xianhao Ou , Weihao Zhang , Shixin Jiang , Runxuan Liu , Dandan Tu , Lei Chen , Ming Liu , Bing Qin

Agentic retrieval-augmented generation (RAG) systems enable large language models (LLMs) to solve complex tasks through multi-step interaction with external retrieval tools. However, such multi-step interaction often involves redundant…

Artificial Intelligence · Computer Science 2026-04-21 Jingbo Sun , Wenyue Chong , Songjun Tu , Qichao Zhang , Yaocheng Zhang , Jiajun Chai , Xiaohan Wang , Wei Lin , Guojun Yin , Dongbin Zhao

Recent advances in machine learning (ML) have shown promise in aiding and accelerating classical combinatorial optimization algorithms. ML-based speed ups that aim to learn in an end to end manner (i.e., directly output the solution) tend…

Machine Learning · Computer Science 2023-10-24 Zohair Shafi , Benjamin A. Miller , Ayan Chatterjee , Tina Eliassi-Rad , Rajmonda S. Caceres

In this paper, we present Hierarchical Graph Network (HGN) for multi-hop question answering. To aggregate clues from scattered texts across multiple paragraphs, a hierarchical graph is created by constructing nodes on different levels of…

Computation and Language · Computer Science 2020-10-07 Yuwei Fang , Siqi Sun , Zhe Gan , Rohit Pillai , Shuohang Wang , Jingjing Liu

The surge in scientific publications challenges traditional review methods, demanding tools that integrate structured metadata with full-text analysis. Hybrid Retrieval Augmented Generation (RAG) systems, combining graph queries with vector…

We present GRACE, a simulation-native agent for autonomous experimental design in high-energy and nuclear physics. Given multimodal input in the form of a natural-language prompt or a published experimental paper, the agent extracts a…

High Energy Physics - Experiment · Physics 2026-02-18 Justin Hill , Hong Joo Ryoo

Agentic Retrieval-Augmented Generation (RAG) is a new paradigm where the reasoning model decides when to invoke a retriever (as a "tool") when answering a question. This paradigm, exemplified by recent research works such as Search-R1,…

Information Retrieval · Computer Science 2025-07-15 Fangzheng Tian , Jinyuan Fang , Debasis Ganguly , Zaiqiao Meng , Craig Macdonald

Recent literature highlights the potential of graph-based approaches within large language model (LLM) retrieval-augmented generation (RAG) pipelines for answering queries of varying complexity, particularly those that fall outside the…

Information Retrieval · Computer Science 2026-04-24 Isabela Iacob , Melisa Marian , Gheorghe Cosmin Silaghi

We present S-Path-RAG, a semantic-aware shortest-path Retrieval-Augmented Generation framework designed to improve multi-hop question answering over large knowledge graphs. S-Path-RAG departs from one-shot, text-heavy retrieval by…

Computation and Language · Computer Science 2026-03-26 Rong Fu , Yemin Wang , Tianxiang Xu , Yongtai Liu , Weizhi Tang , Wangyu Wu , Xiaowen Ma , Simon Fong

Effective tool pre-selection via retrieval is essential for AI agents to select from a vast array of tools when identifying and planning actions in the context of complex user queries. Despite its central role in planning, this aspect…

Artificial Intelligence · Computer Science 2025-11-14 Sahil Bansal , Sai Shruthi Sistla , Aarti Arikatala , Sebastian Schreiber

Retrieval-Augmented Generation (RAG) integrates non-parametric knowledge into Large Language Models (LLMs), typically from unstructured texts and structured graphs. While recent progress has advanced text-based RAG to multi-turn reasoning…

Computation and Language · Computer Science 2025-12-11 Yucan Guo , Miao Su , Saiping Guan , Zihao Sun , Xiaolong Jin , Jiafeng Guo , Xueqi Cheng

This paper proposes a group deliberation oriented multi-agent conversational model to address the limitations of single large language models in complex reasoning tasks. The model adopts a three-level role division architecture consisting…

Artificial Intelligence · Computer Science 2026-01-01 Zheyu Shi , Dong Qiu , Shanlong Yu