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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.…

Machine Learning · Computer Science 2025-04-15 Jasper Linders , Jakub M. Tomczak

Knowledge graphs (KG) have served as the key component of various natural language processing applications. Commonsense knowledge graphs (CKG) are a special type of KG, where entities and relations are composed of free-form text. However,…

Computation and Language · Computer Science 2023-01-04 Haodi Ma , Daisy Zhe Wang

Knowledge graph (KG) is known to be helpful for the task of question answering (QA), since it provides well-structured relational information between entities, and allows one to further infer indirect facts. However, it is challenging to…

Machine Learning · Computer Science 2017-11-29 Yuyu Zhang , Hanjun Dai , Zornitsa Kozareva , Alexander J. Smola , Le Song

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

Large Language Models (LLMs) face challenges in knowledge-intensive reasoning tasks like classic multi-hop question and answering, which involves reasoning across multiple facts. This difficulty arises because the chain of thoughts (CoTs)…

Computation and Language · Computer Science 2025-08-25 Nan Wang , Yongqi Fan , yansha zhu , ZongYu Wang , Xuezhi Cao , Xinyan He , Haiyun Jiang , Tong Ruan , Jingping Liu

Open Knowledge Graphs (such as DBpedia, Wikidata, YAGO) have been recognized as the backbone of diverse applications in the field of data mining and information retrieval. Hence, the completeness and correctness of the Knowledge Graphs…

Computation and Language · Computer Science 2020-05-07 Russa Biswas , Radina Sofronova , Mehwish Alam , Harald Sack

Recent advancements have witnessed the ascension of Large Language Models (LLMs), endowed with prodigious linguistic capabilities, albeit marred by shortcomings including factual inconsistencies and opacity. Conversely, Knowledge Graphs…

Information Retrieval · Computer Science 2024-07-29 DaiFeng Li , Fan Xu

Knowledge graphs (KGs) are gaining prominence in Healthcare AI, especially in drug discovery and pharmaceutical research as they provide a structured way to integrate diverse information sources, enhancing AI system interpretability. This…

Artificial Intelligence · Computer Science 2023-09-29 Satvik Garg , Shivam Parikh , Somya Garg

Knowledge Graphs (KGs), representing facts as triples, have been widely adopted in many applications. Reasoning tasks such as link prediction and rule induction are important for the development of KGs. Knowledge Graph Embeddings (KGEs)…

Artificial Intelligence · Computer Science 2021-12-17 Wen Zhang , Shumin Deng , Mingyang Chen , Liang Wang , Qiang Chen , Feiyu Xiong , Xiangwen Liu , Huajun Chen

Generating Knowledge Graphs (KGs) remains one of the most time-consuming and labor-intensive tasks for knowledge engineers, as they need to identify semantic equivalences between input data sources and ontology terms. While declarative…

Artificial Intelligence · Computer Science 2026-05-20 Carla Castedo , Enrique Iglesias , Manuel Lama , Alberto Bugarin-Diz , Maria-Esther Vidal , David Chaves-Fraga

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…

Computation and Language · Computer Science 2020-07-21 Zequn Sun , Qingheng Zhang , Wei Hu , Chengming Wang , Muhao Chen , Farahnaz Akrami , Chengkai Li

Knowledge Graphs (KGs) store information in the form of (head, predicate, tail)-triples. To augment KGs with new knowledge, researchers proposed models for KG Completion (KGC) tasks such as link prediction; i.e., answering (h; p; ?) or (?;…

Artificial Intelligence · Computer Science 2022-08-24 Haris Widjaja , Kiril Gashteovski , Wiem Ben Rim , Pengfei Liu , Christopher Malon , Daniel Ruffinelli , Carolin Lawrence , Graham Neubig

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…

Digital Libraries · Computer Science 2021-06-11 Arthur Brack , Anett Hoppe , Ralph Ewerth

Knowledge graphs (KGs) comprise entities interconnected by relations of different semantic meanings. KGs are being used in a wide range of applications. However, they inherently suffer from incompleteness, i.e. entities or facts about…

Artificial Intelligence · Computer Science 2023-12-11 Nicolas Hubert , Pierre Monnin , Heiko Paulheim

This paper presents $\mu\text{KG}$, an open-source Python library for representation learning over knowledge graphs. $\mu\text{KG}$ supports joint representation learning over multi-source knowledge graphs (and also a single knowledge…

Computation and Language · Computer Science 2022-07-29 Xindi Luo , Zequn Sun , Wei Hu

We present a surprisingly simple yet accurate approach to reasoning in knowledge graphs (KGs) that requires \emph{no training}, and is reminiscent of case-based reasoning in classical artificial intelligence (AI). Consider the task of…

Computation and Language · Computer Science 2020-07-21 Rajarshi Das , Ameya Godbole , Shehzaad Dhuliawala , Manzil Zaheer , Andrew McCallum

Historical maps contain rich geographic information about the past of a region. They are sometimes the only source of information before the availability of digital maps. Despite their valuable content, it is often challenging to access and…

Information Retrieval · Computer Science 2020-12-08 Kai Sun , Yingjie Hu , Jia Song , Yunqiang Zhu

Knowledge graph (KG) embedding is well-known in learning representations of KGs. Many models have been proposed to learn the interactions between entities and relations of the triplets. However, long-term information among multiple triplets…

Machine Learning · Computer Science 2021-04-29 Yongqi Zhang , Quanming Yao , Lei Chen

Answering complex questions often requires reasoning over knowledge graphs (KGs). State-of-the-art methods often utilize entities in questions to retrieve local subgraphs, which are then fed into KG encoder, e.g. graph neural networks…

Computation and Language · Computer Science 2023-05-31 Shiyang Li , Yifan Gao , Haoming Jiang , Qingyu Yin , Zheng Li , Xifeng Yan , Chao Zhang , Bing Yin

Knowledge Graphs (KGs) have been used to organize large datasets into structured, interconnected information, enhancing data analytics across various fields. In the legislative context, one potential natural application of KGs is modeling…

Databases · Computer Science 2024-09-23 Andrea Colombo