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The ability of knowledge graphs to represent complex relationships at scale has led to their adoption for various needs including knowledge representation, question-answering, and recommendation systems. Knowledge graphs are often…

Computation and Language · Computer Science 2023-05-18 Jason Youn , Ilias Tagkopoulos

Knowledge graph (KG) embedding aims at learning the latent representations for entities and relations of a KG in continuous vector spaces. An empirical observation is that the head (tail) entities connected by the same relation often share…

Computation and Language · Computer Science 2022-06-17 Xueliang Wang , Jiajun Chen , Feng Wu , Jie Wang

Few-shot learning is a challenging task that aims at training a classifier for unseen classes with only a few training examples. The main difficulty of few-shot learning lies in the lack of intra-class diversity within insufficient training…

Computer Vision and Pattern Recognition · Computer Science 2020-01-01 Mengting Chen , Yuxin Fang , Xinggang Wang , Heng Luo , Yifeng Geng , Xinyu Zhang , Chang Huang , Wenyu Liu , Bo Wang

In the task of Knowledge Graph Completion (KGC), the existing datasets and their inherent subtasks carry a wealth of shared knowledge that can be utilized to enhance the representation of knowledge triplets and overall performance. However,…

Computation and Language · Computer Science 2024-05-14 Yongxue Shan , Jie Zhou , Jie Peng , Xin Zhou , Jiaqian Yin , Xiaodong Wang

Knowledge graph completion (KGC) aims to discover missing relationships between entities in knowledge graphs (KGs). Most prior KGC work focuses on learning embeddings for entities and relations through a simple scoring function. Yet, a…

Artificial Intelligence · Computer Science 2023-07-13 Yun-Cheng Wang , Xiou Ge , Bin Wang , C. -C. Jay Kuo

Recently, knowledge graph (KG) augmented models have achieved noteworthy success on various commonsense reasoning tasks. However, KG edge (fact) sparsity and noisy edge extraction/generation often hinder models from obtaining useful…

Computation and Language · Computer Science 2021-06-07 Jun Yan , Mrigank Raman , Aaron Chan , Tianyu Zhang , Ryan Rossi , Handong Zhao , Sungchul Kim , Nedim Lipka , Xiang Ren

Knowledge graphs capture structured information and relations between a set of entities or items. As such knowledge graphs represent an attractive source of information that could help improve recommender systems. However, existing…

Machine Learning · Computer Science 2019-06-17 Hongwei Wang , Fuzheng Zhang , Mengdi Zhang , Jure Leskovec , Miao Zhao , Wenjie Li , Zhongyuan Wang

Knowledge graphs (KGs) store enormous facts as relationships between entities. Due to the long-tailed distribution of relations and the incompleteness of KGs, there is growing interest in few-shot knowledge graph completion (FKGC). Existing…

Information Retrieval · Computer Science 2024-08-06 Zicheng Zhao , Linhao Luo , Shirui Pan , Chengqi Zhang , Chen Gong

Information extraction methods proved to be effective at triple extraction from structured or unstructured data. The organization of such triples in the form of (head entity, relation, tail entity) is called the construction of Knowledge…

Artificial Intelligence · Computer Science 2022-08-25 Mohamad Zamini , Hassan Reza , Minou Rabiei

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

Knowledge Graph (KG) is a flexible structure that is able to describe the complex relationship between data entities. Currently, most KG embedding models are trained based on negative sampling, i.e., the model aims to maximize some…

Artificial Intelligence · Computer Science 2021-06-17 Zelong Li , Jianchao Ji , Zuohui Fu , Yingqiang Ge , Shuyuan Xu , Chong Chen , Yongfeng Zhang

Since large knowledge bases are typically incomplete, missing facts need to be inferred from observed facts in a task called knowledge base completion. The most successful approaches to this task have typically explored explicit paths…

Artificial Intelligence · Computer Science 2018-04-24 Yelong Shen , Po-Sen Huang , Ming-Wei Chang , Jianfeng Gao

We consider the problem of learning efficient and inductive graph convolutional networks for text classification with a large number of examples and features. Existing state-of-the-art graph embedding based methods such as predictive text…

Computation and Language · Computer Science 2020-09-01 Rahul Ragesh , Sundararajan Sellamanickam , Arun Iyer , Ram Bairi , Vijay Lingam

Knowledge Graphs (KG), composed of entities and relations, provide a structured representation of knowledge. For easy access to statistical approaches on relational data, multiple methods to embed a KG into f(KG) $\in$ R^d have been…

Machine Learning · Computer Science 2020-07-02 So Yeon Min , Preethi Raghavan , Peter Szolovits

Human densepose estimation, aiming at establishing dense correspondences between 2D pixels of human body and 3D human body template, is a key technique in enabling machines to have an understanding of people in images. It still poses…

Computer Vision and Pattern Recognition · Computer Science 2022-06-23 Xuanhan Wang , Lianli Gao , Yixuan Zhou , Jingkuan Song , Meng Wang

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

Graph Neural Networks (GNNs) are a framework for graph representation learning, where a model learns to generate low dimensional node embeddings that encapsulate structural and feature-related information. GNNs are usually trained in an…

Machine Learning · Computer Science 2020-12-15 Davide Buffelli , Fabio Vandin

Knowledge graphs (KGs), which consist of triples, are inherently incomplete and always require completion procedure to predict missing triples. In real-world scenarios, KGs are distributed across clients, complicating completion tasks due…

Machine Learning · Computer Science 2023-11-20 Maolin Wang , Dun Zeng , Zenglin Xu , Ruocheng Guo , Xiangyu Zhao

Performing link prediction using knowledge graph embedding models has become a popular approach for knowledge graph completion. Such models employ a transformation function that maps nodes via edges into a vector space in order to measure…

Artificial Intelligence · Computer Science 2021-03-16 Mojtaba Nayyeri , Sahar Vahdati , Can Aykul , Jens Lehmann

Recommendation systems, as widely implemented nowadays on various platforms, recommend relevant items to users based on their preferences. The classical methods which rely on user-item interaction matrices has limitations, especially in…

Information Retrieval · Computer Science 2025-01-13 Guangyi Liu , Quanming Yao , Yongqi Zhang , Lei Chen
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