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Entity alignment, which is a prerequisite for creating a more comprehensive Knowledge Graph (KG), involves pinpointing equivalent entities across disparate KGs. Contemporary methods for entity alignment have predominantly utilized knowledge…

Computation and Language · Computer Science 2024-01-31 Linyao Yang , Hongyang Chen , Xiao Wang , Jing Yang , Fei-Yue Wang , Han Liu

The design and development of text-based knowledge graph completion (KGC) methods leveraging textual entity descriptions are at the forefront of research. These methods involve advanced optimization techniques such as soft prompts and…

Computation and Language · Computer Science 2024-06-28 Rui Yang , Jiahao Zhu , Jianping Man , Li Fang , Yi Zhou

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 (KGs) that modelings the world knowledge as structural triples are inevitably incomplete. Such problems still exist for multimodal knowledge graphs (MMKGs). Thus, knowledge graph completion (KGC) is of great importance to…

Artificial Intelligence · Computer Science 2022-09-16 Yichi Zhang , Wen Zhang

Temporal knowledge graph (TKG) forecasting benchmarks challenge models to predict future facts using knowledge of past facts. In this paper, we apply large language models (LLMs) to these benchmarks using in-context learning (ICL). We…

Computation and Language · Computer Science 2023-10-23 Dong-Ho Lee , Kian Ahrabian , Woojeong Jin , Fred Morstatter , Jay Pujara

Knowledge graph (KG) completion aims to fill the missing facts in a KG, where a fact is represented as a triple in the form of $(subject, relation, object)$. Current KG completion models compel two-thirds of a triple provided (e.g.,…

Machine Learning · Computer Science 2019-01-01 Lingbing Guo , Qingheng Zhang , Weiyi Ge , Wei Hu , Yuzhong Qu

Continual Knowledge Graph Embedding (CKGE) aims to efficiently learn new knowledge and simultaneously preserve old knowledge. Dominant approaches primarily focus on alleviating catastrophic forgetting of old knowledge but neglect efficient…

Artificial Intelligence · Computer Science 2024-07-09 Jiajun Liu , Wenjun Ke , Peng Wang , Jiahao Wang , Jinhua Gao , Ziyu Shang , Guozheng Li , Zijie Xu , Ke Ji , Yining Li

Entity alignment is a crucial task in knowledge graph fusion. However, most entity alignment approaches have the scalability problem. Recent methods address this issue by dividing large KGs into small blocks for embedding and alignment…

Machine Learning · Computer Science 2022-08-25 Kexuan Xin , Zequn Sun , Wen Hua , Wei Hu , Jianfeng Qu , Xiaofang Zhou

Graph neural networks (GNN) have shown significant capabilities in handling structured data, yet their application to dynamic, temporal data remains limited. This paper presents a new type of graph attention network, called TempoKGAT, which…

Machine Learning · Computer Science 2024-12-24 Lena Sasal , Daniel Busby , Abdenour Hadid

Previous cross-lingual knowledge graph (KG) alignment studies rely on entity embeddings derived only from monolingual KG structural information, which may fail at matching entities that have different facts in two KGs. In this paper, we…

Machine Learning · Computer Science 2019-07-31 Kun Xu , Liwei Wang , Mo Yu , Yansong Feng , Yan Song , Zhiguo Wang , Dong Yu

Knowledge graphs (KGs) of real-world facts about entities and their relationships are useful resources for a variety of natural language processing tasks. However, because knowledge graphs are typically incomplete, it is useful to perform…

Computation and Language · Computer Science 2020-10-28 Dat Quoc Nguyen

Knowledge graphs (KGs) typically contain temporal facts indicating relationships among entities at different times. Due to their incompleteness, several approaches have been proposed to infer new facts for a KG based on the existing ones-a…

Machine Learning · Computer Science 2019-07-09 Rishab Goel , Seyed Mehran Kazemi , Marcus Brubaker , Pascal Poupart

While neural networks have been used extensively to make substantial progress in the machine translation task, they are known for being heavily dependent on the availability of large amounts of training data. Recent efforts have tried to…

Computation and Language · Computer Science 2019-02-26 Diego Moussallem , Mihael Arčan , Axel-Cyrille Ngonga Ngomo , Paul Buitelaar

Knowledge graphs (KGs) have been increasingly employed for link prediction and recommendation using real-world datasets. However, the majority of current methods rely on static data, neglecting the dynamic nature and the hidden…

Artificial Intelligence · Computer Science 2024-02-20 Ruiyi Yang , Flora D. Salim , Hao Xue

Temporal Entity Alignment (TEA), which aims to identify equivalent entities across Temporal Knowledge Graphs (TKGs), is crucial for integrating knowledge facts from multiple sources. However, existing TEA models often fail to capture the…

Information Retrieval · Computer Science 2026-05-19 Jiayun Li , Wen Hua , Shiqi Fan , Fengmei Jin , Haiyang Jiang , Xue Li

Estimation of the accuracy of a large-scale knowledge graph (KG) often requires humans to annotate samples from the graph. How to obtain statistically meaningful estimates for accuracy evaluation while keeping human annotation costs low is…

Databases · Computer Science 2019-07-24 Junyang Gao , Xian Li , Yifan Ethan Xu , Bunyamin Sisman , Xin Luna Dong , Jun Yang

Knowledge graph completion (KGC) can predict missing links and is crucial for real-world knowledge graphs, which widely suffer from incompleteness. KGC methods assume a knowledge graph is static, but that may lead to inaccurate prediction…

Artificial Intelligence · Computer Science 2023-11-14 Borui Cai , Yong Xiang , Longxiang Gao , He Zhang , Yunfeng Li , Jianxin Li

Knowledge Graph Embedding (KGE) aims to represent entities and relations of knowledge graph in a low-dimensional continuous vector space. Recent works focus on incorporating structural knowledge with additional information, such as entity…

Computation and Language · Computer Science 2018-08-14 Kai Wang , Yu Liu , Xiujuan Xu , Dan Lin

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

Knowledge graph embedding (KGE) models represent each entity and relation of a knowledge graph (KG) with low-dimensional embedding vectors. These methods have recently been applied to KG link prediction and question answering over…

Computation and Language · Computer Science 2022-03-22 Apoorv Saxena , Adrian Kochsiek , Rainer Gemulla