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Large Language Models (LLMs) have demonstrated significant potential across various domains. However, they often struggle with integrating external knowledge and performing complex reasoning, leading to hallucinations and unreliable…

Machine Learning · Computer Science 2025-11-25 Yao Cheng , Yibo Zhao , Jiapeng Zhu , Yao Liu , Xing Sun , Xiang Li

In an era marked by robust technological growth and swift information renewal, furnishing researchers and the populace with top-tier, avant-garde academic insights spanning various domains has become an urgent necessity. The KDD Cup 2024…

Information Retrieval · Computer Science 2024-10-15 Wei Dai , Peng Fu , Chunjing Gan

Cross-modal drone navigation remains a challenging task in robotics, requiring efficient retrieval of relevant images from large-scale databases based on natural language descriptions. The RoboSense 2025 Track 4 challenge addresses this…

Large Language Models (LLMs) demonstrate strong reasoning abilities but face limitations such as hallucinations and outdated knowledge. Knowledge Graph (KG)-based Retrieval-Augmented Generation (RAG) addresses these issues by grounding LLM…

Computation and Language · Computer Science 2025-03-04 Mufei Li , Siqi Miao , Pan Li

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

Large Language Models (LLMs) are pre-trained on large-scale corpora and excel in numerous general natural language processing (NLP) tasks, such as question answering (QA). Despite their advanced language capabilities, when it comes to…

Egocentric Video Question Answering (Egocentric VideoQA) plays an important role in egocentric video understanding, which refers to answering questions based on first-person videos. Although existing methods have made progress through the…

Computer Vision and Pattern Recognition · Computer Science 2025-12-02 Jiayi Zou , Chaofan Chen , Bing-Kun Bao , Changsheng Xu

Retrieval Augmented Generation (RAG) has emerged as a promising solution to address hallucination issues in Large Language Models (LLMs). However, the integration of multiple retrieval sources, while potentially more informative, introduces…

Information Retrieval · Computer Science 2025-08-12 Wenlong Wu , Haofen Wang , Bohan Li , Peixuan Huang , Xinzhe Zhao , Lei Liang

Retrieval-augmented generation (RAG) systems have made significant progress in solving complex multi-hop question answering (QA) tasks in the English scenario. However, RAG systems inevitably face the application scenario of retrieving…

Computation and Language · Computer Science 2026-03-20 Yilin Wang , Yuchun Fan , Jiaoyang Li , Ziming Zhu , Yongyu Mu , Qiaozhi He , Tong Xiao , Jingbo Zhu

This paper addresses the challenge of answering technical questions derived from Japan's River and Sediment Control Technical Standards -- a multi-volume regulatory document covering survey, planning, design, and maintenance of river…

Information Retrieval · Computer Science 2026-03-17 Takato Yasuno

This paper mainly describes our winning solution (team name: www) to Amazon ESCI Challenge of KDD CUP 2022, which achieves a NDCG score of 0.9043 and wins the first place on task 1: the query-product ranking track. In this competition,…

Information Retrieval · Computer Science 2022-08-08 Qi Zhang , Zijian Yang , Yilun Huang , Ze Chen , Zijian Cai , Kangxu Wang , Jiewen Zheng , Jiarong He , Jin Gao

This Special Report summarizes the 2022 AAPM Grand Challenge on Deep-Learning spectral Computed Tomography (DL-spectral CT) image reconstruction. The purpose of the challenge is to develop the most accurate image reconstruction algorithm…

Medical Physics · Physics 2022-12-23 Emil Y. Sidky , Xiaochuan Pan

Retrieval-Augmented Generation (RAG) enriches Large Language Models (LLMs) by combining their internal, parametric knowledge with external, non-parametric sources, with the goal of improving factual correctness and minimizing…

Information Retrieval · Computer Science 2025-08-13 Tim Cofala , Oleh Astappiev , William Xion , Hailay Teklehaymanot

Retrieval-Augmented Generation (RAG) has recently been extended to multimodal settings, connecting multimodal large language models (MLLMs) with vast corpora of external knowledge such as multimodal knowledge graphs (MMKGs). Despite their…

Computation and Language · Computer Science 2026-04-14 Hyeongcheol Park , Jiyoung Seo , Jaewon Mun , Hogun Park , Wonmin Byeon , Sung June Kim , Hyeonsoo Im , JeungSub Lee , Sangpil Kim

Complex chart understanding tasks demand advanced visual recognition and reasoning capabilities from multimodal large language models (MLLMs). However, current research provides limited coverage of complex chart scenarios and…

Computer Vision and Pattern Recognition · Computer Science 2025-11-05 Duo Xu , Hao Cheng , Xin Lin , Zhen Xie , Hao Wang

Large language models (LLMs) still struggle with multi-hop reasoning over knowledge-graphs (KGs), and we identify a previously overlooked structural reason for this difficulty: Transformer attention heads naturally specialize in distinct…

Computation and Language · Computer Science 2026-04-15 Jinliang Liu , Jiale Bai , Shaoning Zeng

Retrieval-augmented generation (RAG) has become a main technique for alleviating hallucinations in large language models (LLMs). Despite the integration of RAG, LLMs may still present unsupported or contradictory claims to the retrieved…

Computation and Language · Computer Science 2024-05-20 Cheng Niu , Yuanhao Wu , Juno Zhu , Siliang Xu , Kashun Shum , Randy Zhong , Juntong Song , Tong Zhang

This paper considers the reading comprehension task in which multiple documents are given as input. Prior work has shown that a pipeline of retriever, reader, and reranker can improve the overall performance. However, the pipeline system is…

Computation and Language · Computer Science 2019-06-12 Minghao Hu , Yuxing Peng , Zhen Huang , Dongsheng Li

We develop a two-stage retrieval system that combines multiple complementary retrieval methods with a learned reranker and LLM-based reranking, to address the TREC Tip-of-the-Tongue (ToT) task. In the first stage, we employ hybrid retrieval…

Information Retrieval · Computer Science 2026-02-17 Wenxin Zhou , Ritesh Mehta , Anthony Miyaguchi

Grounded multi-video question answering over real-world news events requires systems to surface query-relevant evidence across heterogeneous video archives while attributing every claim to its supporting source. We introduce CRAFT…

Computer Vision and Pattern Recognition · Computer Science 2026-05-20 Mahesh Bhosale , Abdul Wasi , Vishvesh Trivedi , Pengyu Yan , Akhil Gorugantu , David Doermann