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Knowledge graphs (KGs) have attracted more and more attentions because of their fundamental roles in many tasks. Quality evaluation for KGs is thus crucial and indispensable. Existing methods in this field evaluate KGs by either proposing…

人工智能 · 计算机科学 2023-04-13 Xiaodong Li , Chenxin Zou , Yi Cai , Yuelong Zhu

Large language models like GPT-4, Gemini, and Claude have transformed natural language processing (NLP) tasks such as question answering, dialogue generation, summarization, and so forth; yet their susceptibility to hallucination stands as…

计算与语言 · 计算机科学 2025-07-21 Nur A Zarin Nishat , Andrea Coletta , Luigi Bellomarini , Kossi Amouzouvi , Jens Lehmann , Sahar Vahdati

Traditional knowledge graph (KG) completion models learn embeddings to predict missing facts. Recent works attempt to complete KGs in a text-generation manner with large language models (LLMs). However, they need to ground the output of…

计算与语言 · 计算机科学 2024-07-24 Yang Liu , Xiaobin Tian , Zequn Sun , Wei Hu

Knowledge graphs have attracted lots of attention in academic and industrial environments. Despite their usefulness, popular knowledge graphs suffer from incompleteness of information, especially in their type assertions. This has…

信息检索 · 计算机科学 2019-08-21 Sameh K. Mohamed

Pretrained language models (LMs) are susceptible to generate text with nonfactual information. In this work, we measure and improve the factual accuracy of large-scale LMs for open-ended text generation. We design the FactualityPrompts test…

计算与语言 · 计算机科学 2023-03-03 Nayeon Lee , Wei Ping , Peng Xu , Mostofa Patwary , Pascale Fung , Mohammad Shoeybi , Bryan Catanzaro

Explanations accompanied by a recommendation can assist users in understanding the decision made by recommendation systems, which in turn increases a user's confidence and trust in the system. Recently, research has focused on generating…

计算与语言 · 计算机科学 2023-08-31 Anthony Colas , Jun Araki , Zhengyu Zhou , Bingqing Wang , Zhe Feng

Real-world Knowledge Graphs (KGs) often suffer from incompleteness, which limits their potential performance. Knowledge Graph Completion (KGC) techniques aim to address this issue. However, traditional KGC methods are computationally…

计算与语言 · 计算机科学 2023-11-03 Alla Chepurova , Aydar Bulatov , Yuri Kuratov , Mikhail Burtsev

Retrieval of information from graph-structured knowledge bases represents a promising direction for improving the factuality of LLMs. While various solutions have been proposed, a comparison of methods is difficult due to the lack of…

机器学习 · 计算机科学 2025-12-05 Alberto Cattaneo , Carlo Luschi , Daniel Justus

Large Language Models (LLMs) and Knowledge Graphs (KGs) offer a promising approach to robust and explainable Question Answering (QA). While LLMs excel at natural language understanding, they suffer from knowledge gaps and hallucinations.…

机器学习 · 计算机科学 2025-04-15 Jasper Linders , Jakub M. Tomczak

Open attribute value extraction for emerging entities is an important but challenging task. A lot of previous works formulate the problem as a \textit{question-answering} (QA) task. While the collections of articles from web corpus provide…

计算与语言 · 计算机科学 2020-10-20 Ye Liu , Sheng Zhang , Rui Song , Suo Feng , Yanghua Xiao

Knowledge graphs (KGs), which could provide essential relational information between entities, have been widely utilized in various knowledge-driven applications. Since the overall human knowledge is innumerable that still grows explosively…

计算与语言 · 计算机科学 2018-02-19 Ruobing Xie , Zhiyuan Liu , Fen Lin , Leyu Lin

Knowledge graphs (KGs), as a structured form of knowledge representation, have been widely applied in the real world. Recently, few-shot knowledge graph completion (FKGC), which aims to predict missing facts for unseen relations with…

信息检索 · 计算机科学 2023-04-18 Linhao Luo , Yuan-Fang Li , Gholamreza Haffari , Shirui Pan

Corporate fraud detection aims to automatically recognize companies that conduct wrongful activities such as fraudulent financial statements or illegal insider trading. Previous learning-based methods fail to effectively integrate rich…

机器学习 · 计算机科学 2025-06-02 Shiqi Wang , Zhibo Zhang , Libing Fang , Cam-Tu Nguyen , Wenzhong Li

Ontology-based knowledge graphs (KG) are desirable for effective knowledge management and reuse in various decision making scenarios, including design. Creating and populating extensive KG based on specific ontological models can be highly…

Language models are trained on large volumes of text, and as a result their parameters might contain a significant body of factual knowledge. Any downstream task performed by these models implicitly builds on these facts, and thus it is…

计算与语言 · 计算机科学 2023-01-31 Roi Cohen , Mor Geva , Jonathan Berant , Amir Globerson

It is well acknowledged that incorporating explicit knowledge graphs (KGs) can benefit question answering. Existing approaches typically follow a grounding-reasoning pipeline in which entity nodes are first grounded for the query (question…

计算与语言 · 计算机科学 2024-07-24 Ying Su , Jipeng Zhang , Yangqiu Song , Tong Zhang

Knowledge graph (KG) is an abstraction that can be extracted from text corpora and used for in-depth reasoning. Prior work has leveraged KGs to fine-tune language models (LMs), enabling domain-specific superintelligence. In this work, we…

计算与语言 · 计算机科学 2026-05-28 Jake Stephen , Niraj K. Jha

When knowledge graphs (KGs) are automatically extracted from text, are they accurate enough for downstream analysis? Unfortunately, current annotated datasets can not be used to evaluate this question, since their KGs are highly…

计算与语言 · 计算机科学 2025-05-19 Erica Cai , Sean McQuade , Kevin Young , Brendan O'Connor

Knowledge graphs (KGs) store rich facts about the real world. In this paper, we study KG alignment, which aims to find alignment between not only entities but also relations and classes in different KGs. Alignment at the entity level can…

数据库 · 计算机科学 2023-06-21 Jiacheng Huang , Zequn Sun , Qijin Chen , Xiaozhou Xu , Weijun Ren , Wei Hu

Knowledge Graphs (KGs) are structured knowledge repositories containing entities and relations between them. In this paper, we study the problem of automatically updating KGs over time in response to evolving knowledge in unstructured…

计算与语言 · 计算机科学 2026-04-08 Klim Zaporojets , Daniel Daza , Edoardo Barba , Ira Assent , Roberto Navigli , Paul Groth