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Knowledge graph question answering (KGQA) based on information retrieval aims to answer a question by retrieving answer from a large-scale knowledge graph. Most existing methods first roughly retrieve the knowledge subgraphs (KSG) that may…

Computation and Language · Computer Science 2022-10-06 Hanning Gao , Lingfei Wu , Po Hu , Zhihua Wei , Fangli Xu , Bo Long

Knowledge Graph (KG) and attention mechanism have been demonstrated effective in introducing and selecting useful information for weakly supervised methods. However, only qualitative analysis and ablation study are provided as evidence. In…

Computation and Language · Computer Science 2021-11-19 Zikun Hu , Yixin Cao , Lifu Huang , Tat-Seng Chua

Knowledge Graphs (KGs) are foundational structures in many AI applications, representing entities and their interrelations through triples. However, triple-based KGs lack the contextual information of relational knowledge, like temporal…

Artificial Intelligence · Computer Science 2024-07-01 Chengjin Xu , Muzhi Li , Cehao Yang , Xuhui Jiang , Lumingyuan Tang , Yiyan Qi , Jian Guo

Recently, knowledge-enhanced methods leveraging auxiliary knowledge graphs have emerged in relation extraction, surpassing traditional text-based approaches. However, to our best knowledge, there is currently no public dataset available…

Machine Learning · Computer Science 2023-04-26 Yucong Lin , Hongming Xiao , Jiani Liu , Zichao Lin , Keming Lu , Feifei Wang , Wei Wei

Knowledge graph (KG) enhanced recommendation has demonstrated improved performance in the recommendation system (RecSys) and attracted considerable research interest. Recently the literature has adopted neural graph networks (GNNs) on the…

Information Retrieval · Computer Science 2022-11-15 Liangwei Yang , Shen Wang , Jibing Gong , Shaojie Zheng , Shuying Du , Zhiwei Liu , Philip S. Yu

Document-level relation extraction (RE) aims to extract the relations between entities from the input document that usually containing many difficultly-predicted entity pairs whose relations can only be predicted through relational…

Computation and Language · Computer Science 2022-11-29 Liang Zhang , Jinsong Su , Yidong Chen , Zhongjian Miao , Zijun Min , Qingguo Hu , Xiaodong Shi

Concept relatedness estimation (CRE) aims to determine whether two given concepts are related. Existing methods only consider the pairwise relationship between concepts, while overlooking the higher-order relationship that could be encoded…

Computation and Language · Computer Science 2022-12-01 Yueen Ma , Zixing Song , Xuming Hu , Jingjing Li , Yifei Zhang , Irwin King

Large Language Models (LLMs) have demonstrated exceptional capabilities across diverse tasks. However, their deployment in long context scenarios remains hindered by computational inefficiency and information redundancy. Context compression…

Computation and Language · Computer Science 2026-03-09 Jiwei Tang , Shilei Liu , Zhicheng Zhang , Yujin Yuan , Libin Zheng , Wenbo Su , Bo Zheng

Since large language models (LLMs) have a tendency to generate factually inaccurate output, retrieval-augmented generation (RAG) has gained significant attention as a key means to mitigate this downside of harnessing only LLMs. However,…

Computation and Language · Computer Science 2025-12-18 Youmin Ko , Sungjong Seo , Hyunjoon Kim

Traditional recommender systems estimate user preference on items purely based on historical interaction records, thus failing to capture fine-grained yet dynamic user interests and letting users receive recommendation only passively.…

Information Retrieval · Computer Science 2023-05-02 Xuhui Ren , Tong Chen , Quoc Viet Hung Nguyen , Lizhen Cui , Zi Huang , Hongzhi Yin

Integrating Large Language Models (LLMs) in Intelligent Tutoring Systems (ITS) presents transformative opportunities for personalized education. However, current implementations face two critical challenges: maintaining factual accuracy and…

Computation and Language · Computer Science 2025-02-13 Chenxi Dong , Yimin Yuan , Kan Chen , Shupei Cheng , Chujie Wen

Knowledge graph (KG) link prediction aims to infer new facts based on existing facts in the KG. Recent studies have shown that using the graph neighborhood of a node via graph neural networks (GNNs) provides more useful information compared…

Computation and Language · Computer Science 2024-02-15 Vardaan Pahuja , Boshi Wang , Hugo Latapie , Jayanth Srinivasa , Yu Su

Conversational Question Answering over Knowledge Graphs (KGs) combines the factual grounding of KG-based QA with the interactive nature of dialogue systems. KGs are widely used in enterprise and domain applications to provide structured,…

Computation and Language · Computer Science 2025-11-27 Reham Omar , Abdelghny Orogat , Ibrahim Abdelaziz , Omij Mangukiya , Panos Kalnis , Essam Mansour

Knowledge graph completion (KGC) aims to predict missing facts in knowledge graphs (KGs), which is crucial as modern KGs remain largely incomplete. While training KGC models on multiple aligned KGs can improve performance, previous methods…

Computation and Language · Computer Science 2023-12-19 Wei Tang , Zhiqian Wu , Yixin Cao , Yong Liao , Pengyuan Zhou

Incorporating knowledge graph (KG) into recommender system is promising in improving the recommendation accuracy and explainability. However, existing methods largely assume that a KG is complete and simply transfer the "knowledge" in KG at…

Information Retrieval · Computer Science 2019-02-19 Yixin Cao , Xiang Wang , Xiangnan He , Zikun hu , Tat-Seng Chua

Knowledge Graphs (KGs) have been applied to many tasks including Web search, link prediction, recommendation, natural language processing, and entity linking. However, most KGs are far from complete and are growing at a rapid pace. To…

Artificial Intelligence · Computer Science 2017-11-10 Baoxu Shi , Tim Weninger

To alleviate data sparsity and cold-start problems of traditional recommender systems (RSs), incorporating knowledge graphs (KGs) to supplement auxiliary information has attracted considerable attention recently. However, simply integrating…

Information Retrieval · Computer Science 2022-01-04 Yankai Chen , Yaming Yang , Yujing Wang , Jing Bai , Xiangchen Song , Irwin King

With the advent of the Internet, large amount of digital text is generated everyday in the form of news articles, research publications, blogs, question answering forums and social media. It is important to develop techniques for extracting…

Computation and Language · Computer Science 2017-12-15 Sachin Pawar , Girish K. Palshikar , Pushpak Bhattacharyya

Knowledge Graph Completion (KGC) aims to infer missing information in Knowledge Graphs (KGs) to address their inherent incompleteness. Traditional structure-based KGC methods, while effective, face significant computational demands and…

Computation and Language · Computer Science 2025-04-01 Jianfang Chen , Kai Zhang , Aoran Gan , Shiwei Tong , Shuanghong Shen , Qi Liu

We introduce a novel framework, Online Relational Inference (ORI), designed to efficiently identify hidden interaction graphs in evolving multi-agent interacting systems using streaming data. Unlike traditional offline methods that rely on…

Artificial Intelligence · Computer Science 2024-11-08 Beomseok Kang , Priyabrata Saha , Sudarshan Sharma , Biswadeep Chakraborty , Saibal Mukhopadhyay