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Knowledge graphs (KGs) have become important auxiliary information for helping recommender systems obtain a good understanding of user preferences. Despite recent advances in KG-based recommender systems, existing methods are prone to…

信息检索 · 计算机科学 2023-04-25 Xuhui Ren , Wei Yuan , Tong Chen , Chaoqun Yang , Quoc Viet Hung Nguyen , Hongzhi Yin

Despite the impressive advancements of Large Language Models (LLMs) in generating text, they are often limited by the knowledge contained in the input and prone to producing inaccurate or hallucinated content. To tackle these issues,…

信息检索 · 计算机科学 2024-05-29 Yu Wang , Nedim Lipka , Ruiyi Zhang , Alexa Siu , Yuying Zhao , Bo Ni , Xin Wang , Ryan Rossi , Tyler Derr

Knowledge Graph embedding provides a versatile technique for representing knowledge. These techniques can be used in a variety of applications such as completion of knowledge graph to predict missing information, recommender systems,…

信息检索 · 计算机科学 2021-07-19 Shivani Choudhary , Tarun Luthra , Ashima Mittal , Rajat Singh

Knowledge Graph based Retrieval-Augmented Generation (KG-RAG) is a technique that enhances Large Language Model (LLM) inference in tasks like Question Answering (QA) by retrieving relevant information from knowledge graphs (KGs). However,…

人工智能 · 计算机科学 2025-09-01 Dongzhuoran Zhou , Yuqicheng Zhu , Xiaxia Wang , Yuan He , Jiaoyan Chen , Steffen Staab , Evgeny Kharlamov

Knowledge graph (KG) reasoning is a task that aims to predict unknown facts based on known factual samples. Reasoning methods can be divided into two categories: rule-based methods and KG-embedding based methods. The former possesses…

人工智能 · 计算机科学 2024-07-08 Fengsong Sun , Jinyu Wang , Zhiqing Wei , Xianchao Zhang

Entity alignment seeks to find entities in different knowledge graphs (KGs) that refer to the same real-world object. Recent advancement in KG embedding impels the advent of embedding-based entity alignment, which encodes entities in a…

计算与语言 · 计算机科学 2020-07-21 Zequn Sun , Qingheng Zhang , Wei Hu , Chengming Wang , Muhao Chen , Farahnaz Akrami , Chengkai Li

To alleviate the challenges of building Knowledge Graphs (KG) from scratch, a more general task is to enrich a KG using triples from an open corpus, where the obtained triples contain noisy entities and relations. It is challenging to…

人工智能 · 计算机科学 2022-06-16 Yue Wang , Yao Wan , Lu Bai , Lixin Cui , Zhuo Xu , Ming Li , Philip S. Yu , Edwin R Hancock

Human-curated knowledge graphs provide critical supportive information to various natural language processing tasks, but these graphs are usually incomplete, urging auto-completion of them. Prevalent graph embedding approaches, e.g.,…

计算与语言 · 计算机科学 2021-02-25 Bo Wang , Tao Shen , Guodong Long , Tianyi Zhou , Yi Chang

In the era of personalized education, the provision of comprehensible explanations for learning recommendations is of a great value to enhance the learner's understanding and engagement with the recommended learning content. Large language…

人工智能 · 计算机科学 2025-01-23 Hasan Abu-Rasheed , Christian Weber , Madjid Fathi

Knowledge graph (KG) embedding methods which map entities and relations to unique embeddings in the KG have shown promising results on many reasoning tasks. However, the same embedding dimension for both dense entities and sparse entities…

计算与语言 · 计算机科学 2022-05-06 Linlin Chao , Xiexiong Lin , Taifeng Wang , Wei Chu

The paper introduces ExKG-LLM, a framework designed to automate the expansion of cognitive neuroscience knowledge graphs (CNKG) using large language models (LLMs). It addresses limitations in existing tools by enhancing accuracy,…

人工智能 · 计算机科学 2025-07-09 Ali Sarabadani , Kheirolah Rahsepar Fard , Hamid Dalvand

The recently developed retrieval-augmented generation (RAG) technology has enabled the efficient construction of domain-specific applications. However, it also has limitations, including the gap between vector similarity and the relevance…

Recently decades have witnessed the empirical success of framing Knowledge Graph (KG) embeddings via language models. However, language model-based KG embeddings are usually deployed as static artifacts, making them difficult to modify…

计算与语言 · 计算机科学 2023-12-29 Siyuan Cheng , Ningyu Zhang , Bozhong Tian , Xi Chen , Qingbing Liu , Huajun Chen

Relation extraction task is a crucial and challenging aspect of Natural Language Processing. Several methods have surfaced as of late, exhibiting notable performance in addressing the task; however, most of these approaches rely on vast…

计算与语言 · 计算机科学 2023-08-25 Fréjus A. A. Laleye , Loïc Rakotoson , Sylvain Massip

Adoption of recently developed methods from machine learning has given rise to creation of drug-discovery knowledge graphs (KG) that utilize the interconnected nature of the domain. Graph-based modelling of the data, combined with KG…

机器学习 · 计算机科学 2022-07-27 Stephen Bonner , Ufuk Kirik , Ola Engkvist , Jian Tang , Ian P Barrett

Citation recommendation for research papers is a valuable task that can help researchers improve the quality of their work by suggesting relevant related work. Current approaches for this task rely primarily on the text of the papers and…

数字图书馆 · 计算机科学 2021-06-11 Arthur Brack , Anett Hoppe , Ralph Ewerth

In this paper we present an approach to reduce hallucinations in Large Language Models (LLMs) by incorporating Knowledge Graphs (KGs) as an additional modality. Our method involves transforming input text into a set of KG embeddings and…

计算与语言 · 计算机科学 2025-01-15 Viktoriia Chekalina , Anton Razzhigaev , Elizaveta Goncharova , Andrey Kuznetsov

Large language models (LLMs) have significantly advanced performance across a spectrum of natural language processing (NLP) tasks. Yet, their application to knowledge graphs (KGs), which describe facts in the form of triplets and allow…

The standard evaluation protocol for measuring the quality of Knowledge Graph Completion methods - the task of inferring new links to be added to a graph - typically involves a step which ranks every entity of a Knowledge Graph to assess…

人工智能 · 计算机科学 2024-02-02 Filip Cornell , Yifei Jin , Jussi Karlgren , Sarunas Girdzijauskas

Large Language Models (LLMs) have achieved impressive progress in natural language processing, but their limited ability to retain long-term context constrains performance on document-level or multi-turn tasks. Retrieval-Augmented…

计算与语言 · 计算机科学 2025-05-20 Zhangyu Wang , Siyuan Gao , Rong Zhou , Hao Wang , Li Ning