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Knowledge graphs are large, useful, but incomplete knowledge repositories. They encode knowledge through entities and relations which define each other through the connective structure of the graph. This has inspired methods for the joint…

人工智能 · 计算机科学 2018-03-05 Bhushan Kotnis , Vivi Nastase

Knowledge representation learning has been commonly adopted to incorporate knowledge graph (KG) into various online services. Although existing knowledge representation learning methods have achieved considerable performance improvement,…

机器学习 · 计算机科学 2022-05-18 Binbin Hu , Zhiyang Hu , Zhiqiang Zhang , Jun Zhou , Chuan Shi

The problem of knowledge graph (KG) reasoning has been widely explored by traditional rule-based systems and more recently by knowledge graph embedding methods. While logical rules can capture deterministic behavior in a KG they are brittle…

人工智能 · 计算机科学 2020-09-24 Susheel Suresh , Jennifer Neville

Knowledge Graph Embedding models, representing entities and edges in a low-dimensional space, have been extremely successful at solving tasks related to completing and exploring Knowledge Graphs (KGs). One of the key aspects of training…

人工智能 · 计算机科学 2024-11-25 Alberto Bernardi , Luca Costabello

Knowledge base completion is formulated as a binary classification problem in this work, where an XGBoost binary classifier is trained for each relation using relevant links in knowledge graphs (KGs). The new method, named KGBoost, adopts a…

机器学习 · 计算机科学 2022-04-08 Yun-Cheng Wang , Xiou Ge , Bin Wang , C. -C. Jay Kuo

Knowledge Graphs (KGs) have shown to be very important for applications such as personal assistants, question-answering systems, and search engines. Therefore, it is crucial to ensure their high quality. However, KGs inevitably contain…

数据库 · 计算机科学 2022-08-18 Elwin Huaman , Dieter Fensel

Using knowledge graphs to assist deep learning models in making recommendation decisions has recently been proven to effectively improve the model's interpretability and accuracy. This paper introduces an end-to-end deep learning model,…

信息检索 · 计算机科学 2024-04-11 Chen Li , Yang Cao , Ye Zhu , Debo Cheng , Chengyuan Li , Yasuhiko Morimoto

Collaborative filtering often suffers from sparsity and cold start problems in real recommendation scenarios, therefore, researchers and engineers usually use side information to address the issues and improve the performance of recommender…

信息检索 · 计算机科学 2019-01-28 Hongwei Wang , Fuzheng Zhang , Miao Zhao , Wenjie Li , Xing Xie , Minyi Guo

Negative sampling, which samples negative triplets from non-observed ones in knowledge graph (KG), is an essential step in KG embedding. Recently, generative adversarial network (GAN), has been introduced in negative sampling. By sampling…

机器学习 · 计算机科学 2021-07-15 Yongqi Zhang , Quanming Yao , Lei Chen

Knowledge graph embedding models (KGEMs) are used for various tasks related to knowledge graphs (KGs), including link prediction. They are trained with loss functions that consider batches of true and false triples. However, different kinds…

机器学习 · 计算机科学 2024-03-07 Nicolas Hubert , Pierre Monnin , Armelle Brun , Davy Monticolo

Incorporating knowledge graphs (KGs) as side information in recommendation has recently attracted considerable attention. Despite the success in general recommendation scenarios, prior methods may fall short of performance satisfaction for…

信息检索 · 计算机科学 2022-09-29 Xinni Zhang , Yankai Chen , Cuiyun Gao , Qing Liao , Shenglin Zhao , Irwin King

To alleviate the cold start problem caused by collaborative filtering in recommender systems, knowledge graphs (KGs) are increasingly employed by many methods as auxiliary resources. However, existing work incorporated with KGs cannot…

机器学习 · 计算机科学 2020-09-10 Xinze Lyu , Guangyao Li , Jiacheng Huang , Wei Hu

Leveraging graphs on recommender systems has gained popularity with the development of graph representation learning (GRL). In particular, knowledge graph embedding (KGE) and graph neural networks (GNNs) are representative GRL approaches,…

Knowledge Graphs (KGs) represent real-world noisy raw information in a structured form, capturing relationships between entities. However, for dynamic real-world applications such as social networks, recommender systems, computational…

人工智能 · 计算机科学 2020-03-26 Amit Sheth , Swati Padhee , Amelie Gyrard

Knowledge Graph Question Answering aims to answer natural language questions by reasoning over structured knowledge graphs. While large language models have advanced KGQA through their strong reasoning capabilities, existing methods…

Knowledge graph (KG) plays an increasingly important role in recommender systems. Recently, graph neural networks (GNNs) based model has gradually become the theme of knowledge-aware recommendation (KGR). However, there is a natural…

信息检索 · 计算机科学 2022-04-20 Ding Zou , Wei Wei , Xian-Ling Mao , Ziyang Wang , Minghui Qiu , Feida Zhu , Xin Cao

Knowledge Graphs (KGs) have been integrated in several models of recommendation to augment the informational value of an item by means of its related entities in the graph. Yet, existing datasets only provide explicit ratings on items and…

信息检索 · 计算机科学 2021-06-09 Anders H. Brams , Anders L. Jakobsen , Theis E. Jendal , Matteo Lissandrini , Peter Dolog , Katja Hose

In the last years, deep learning has shown to be a game-changing technology in artificial intelligence thanks to the numerous successes it reached in diverse application fields. Among others, the use of deep learning for the recommendation…

信息检索 · 计算机科学 2018-07-16 Vito Bellini , Angelo Schiavone , Tommaso Di Noia , Azzurra Ragone , Eugenio Di Sciascio

In implicit collaborative filtering (CF) task of recommender systems, recent works mainly focus on model structure design with promising techniques like graph neural networks (GNNs). Effective and efficient negative sampling methods that…

信息检索 · 计算机科学 2024-03-29 Kexin Shi , Yun Zhang , Bingyi Jing , Wenjia Wang

In this paper, we have explored the effects of different minibatch sampling techniques in Knowledge Graph Completion. Knowledge Graph Completion (KGC) or Link Prediction is the task of predicting missing facts in a knowledge graph. KGC…

社会与信息网络 · 计算机科学 2020-04-14 Bishal Santra , Prakhar Sharma , Sumegh Roychowdhury , Pawan Goyal