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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…

Computation and Language · Computer Science 2022-05-06 Linlin Chao , Xiexiong Lin , Taifeng Wang , Wei Chu

This paper studies the problem of predicting missing relationships between entities in knowledge graphs through learning their representations. Currently, the majority of existing link prediction models employ simple but intuitive scoring…

Computation and Language · Computer Science 2019-11-20 Xiang Kong , Xianyang Chen , Eduard Hovy

Signed Graph Neural Networks (SGNNs) are vital for analyzing complex patterns in real-world signed graphs containing positive and negative links. However, three key challenges hinder current SGNN-based signed graph representation learning:…

Machine Learning · Computer Science 2023-10-17 Zeyu Zhang , Shuyan Wan , Sijie Wang , Xianda Zheng , Xinrui Zhang , Kaiqi Zhao , Jiamou Liu , Dong Hao

Embedding based Knowledge Graph (KG) Completion has gained much attention over the past few years. Most of the current algorithms consider a KG as a multidirectional labeled graph and lack the ability to capture the semantics underlying the…

Artificial Intelligence · Computer Science 2024-07-12 Mehwish Alam , Frank van Harmelen , Maribel Acosta

As social media and the World Wide Web become hubs for information dissemination, effectively organizing and understanding the vast amounts of dynamically evolving Web content is crucial. Knowledge graphs (KGs) provide a powerful framework…

Computation and Language · Computer Science 2026-02-03 Linyu Li , Zhi Jin , Yuanpeng He , Dongming Jin , Yichi Zhang , Haoran Duan , Xuan Zhang , Zhengwei Tao , Nyima Tash

Knowledge graphs (KGs) are typically incomplete and we often wish to infer new facts given the existing ones. This can be thought of as a binary classification problem; we aim to predict if new facts are true or false. Unfortunately, we…

Machine Learning · Computer Science 2022-01-11 Ainaz Hajimoradlou , Mehran Kazemi

Failure mode and effects analysis (FMEA) is an essential tool for mitigating potential failures, particularly during the ramp-up phases of new products. However, its effectiveness is often limited by the reasoning capabilities of the FMEA…

Information Retrieval · Computer Science 2025-04-01 Lukas Bahr , Christoph Wehner , Judith Wewerka , José Bittencourt , Ute Schmid , Rüdiger Daub

Knowledge graph completion (KGC) is a widely used method to tackle incompleteness in knowledge graphs (KGs) by making predictions for missing links. Description-based KGC leverages pre-trained language models to learn entity and relation…

Computation and Language · Computer Science 2024-03-05 Derong Xu , Ziheng Zhang , Zhenxi Lin , Xian Wu , Zhihong Zhu , Tong Xu , Xiangyu Zhao , Yefeng Zheng , Enhong Chen

Knowledge Graphs (KGs) have emerged as invaluable resources for enriching recommendation systems by providing a wealth of factual information and capturing semantic relationships among items. Leveraging KGs can significantly enhance…

Information Retrieval · Computer Science 2023-12-29 Yangqin Jiang , Yuhao Yang , Lianghao Xia , Chao Huang

Graph neural networks (GNNs) have shown remarkable performance on diverse graph mining tasks. Although different GNNs can be unified as the same message passing framework, they learn complementary knowledge from the same graph. Knowledge…

Machine Learning · Computer Science 2023-04-06 Zhichun Guo , Chunhui Zhang , Yujie Fan , Yijun Tian , Chuxu Zhang , Nitesh Chawla

Knowledge Graphs (KGs) have shown great success in recommendation. This is attributed to the rich attribute information contained in KG to improve item and user representations as side information. However, existing knowledge-aware methods…

Information Retrieval · Computer Science 2021-12-20 Zepeng Huai , Jianhua Tao , Feihu Che , Guohua Yang , Dawei Zhang

Recent work in Natural Language Processing and Computer Vision has been using textual information -- e.g., entity names and descriptions -- available in knowledge graphs to ground neural models to high-quality structured data. However, when…

Artificial Intelligence · Computer Science 2023-11-28 Simone Conia , Min Li , Daniel Lee , Umar Farooq Minhas , Ihab Ilyas , Yunyao Li

In the last decades, people have been consuming and combining more drugs than before, increasing the number of Drug-Drug Interactions (DDIs). To predict unknown DDIs, recently, studies started incorporating Knowledge Graphs (KGs) since they…

Artificial Intelligence · Computer Science 2023-08-14 Lizzy Farrugia , Lilian M. Azzopardi , Jeremy Debattista , Charlie Abela

Knowledge graph embeddings are dense numerical representations of entities in a knowledge graph (KG). While the majority of approaches concentrate only on relational information, i.e., relations between entities, fewer approaches exist…

Artificial Intelligence · Computer Science 2023-09-07 Patryk Preisner , Heiko Paulheim

Nowadays, Knowledge graphs (KGs) have been playing a pivotal role in AI-related applications. Despite the large sizes, existing KGs are far from complete and comprehensive. In order to continuously enrich KGs, automatic knowledge…

Computation and Language · Computer Science 2021-11-12 Zhao Zhang , Fuzhen Zhuang , Hengshu Zhu , Chao Li , Hui Xiong , Qing He , Yongjun Xu

Humans excel in analogical learning and knowledge transfer and, more importantly, possess a unique understanding of identifying appropriate sources of knowledge. From a model's perspective, this presents an interesting challenge. If models…

Machine Learning · Computer Science 2026-01-12 Xinhao Zhang , Jinghan Zhang , Fengran Mo , Dongjie Wang , Yanjie Fu , Kunpeng Liu

Large Language Models (LLMs) often struggle with producing factually consistent answers due to limitations in their parametric memory. Retrieval-Augmented Generation (RAG) paradigms mitigate this issue by incorporating external knowledge at…

Computation and Language · Computer Science 2026-05-05 Shanglin Wu , Lihui Liu , Jinho D. Choi , Kai Shu

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…

Computation and Language · Computer Science 2025-07-21 Nur A Zarin Nishat , Andrea Coletta , Luigi Bellomarini , Kossi Amouzouvi , Jens Lehmann , Sahar Vahdati

Knowledge graph (KG) alignment and completion are usually treated as two independent tasks. While recent work has leveraged entity and relation alignments from multiple KGs, such as alignments between multilingual KGs with common entities…

Computation and Language · Computer Science 2022-10-19 Vinh Tong , Dat Quoc Nguyen , Trung Thanh Huynh , Tam Thanh Nguyen , Quoc Viet Hung Nguyen , Mathias Niepert

Answering natural language questions on knowledge graphs (KGQA) remains a great challenge in terms of understanding complex questions via multi-hop reasoning. Previous efforts usually exploit large-scale entity-related text corpora or…

Computation and Language · Computer Science 2022-09-05 Zile Qiao , Wei Ye , Tong Zhang , Tong Mo , Weiping Li , Shikun Zhang
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