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In recommender systems, knowledge graph (KG) can offer critical information that is lacking in the original user-item interaction graph (IG). Recent process has explored this direction and shows that contrastive learning is a promising way…

Information Retrieval · Computer Science 2023-09-26 Haibo Ye , Xinjie Li , Yuan Yao , Hanghang Tong

Various graph contrastive learning models have been proposed to improve the performance of learning tasks on graph datasets in recent years. While effective and prevalent, these models are usually carefully customized. In particular,…

Machine Learning · Computer Science 2021-11-01 Dongkuan Xu , Wei Cheng , Dongsheng Luo , Haifeng Chen , Xiang Zhang

Graph Neural Networks (GNNs) have emerged as promising solutions for collaborative filtering (CF) through the modeling of user-item interaction graphs. The nucleus of existing GNN-based recommender systems involves recursive message passing…

Machine Learning · Computer Science 2024-05-21 Peiyan Zhang , Yuchen Yan , Xi Zhang , Chaozhuo Li , Senzhang Wang , Feiran Huang , Sunghun Kim

Large language models (LLMs) have demonstrated strong performance in natural language generation but remain limited in knowle- dge-intensive tasks due to outdated or incomplete internal knowledge. Retrieval-Augmented Generation (RAG)…

Artificial Intelligence · Computer Science 2025-08-05 Dong Li , Yichen Niu , Ying Ai , Xiang Zou , Biqing Qi , Jianxing Liu

Graph embedding, aiming to learn low-dimensional representations (aka. embeddings) of nodes, has received significant attention recently. Recent years have witnessed a surge of efforts made on static graphs, among which Graph Convolutional…

Machine Learning · Computer Science 2021-04-08 Zeyu Cui , Zekun Li , Shu Wu , Xiaoyu Zhang , Qiang Liu , Liang Wang , Mengmeng Ai

Knowledge graphs (KGs) such as DBpedia, Freebase, YAGO, Wikidata, and NELL were constructed to store large-scale, real-world facts as (subject, predicate, object) triples -- that can also be modeled as a graph, where a node (a subject or an…

Databases · Computer Science 2023-05-25 Arijit Khan

In applications of distributed storage systems to modern key-value stores, the stored data is highly dynamic due to frequent updates. The multi-version coding problem was formulated to study the cost of storing dynamic data in distributed…

Information Theory · Computer Science 2019-05-27 Ramy E. Ali , Viveck Cadambe , Jaime Llorca , Antonia Tulino

Machine learning about language can be improved by supplying it with specific knowledge and sources of external information. We present here a new version of the linked open data resource ConceptNet that is particularly well suited to be…

Computation and Language · Computer Science 2018-12-12 Robyn Speer , Joshua Chin , Catherine Havasi

Knowledge graphs can be used in many areas related to data semantics such as question-answering systems, knowledge based systems. However, the currently constructed knowledge graphs need to be complemented for better knowledge in terms of…

Artificial Intelligence · Computer Science 2023-07-25 Chun-Hee Lee , Dong-oh Kang , Hwa Jeon Song

In the contemporary context of rapid advancements in information technology and the exponential growth of data volume, language models are confronted with significant challenges in effectively navigating the dynamic and ever-evolving…

Information Retrieval · Computer Science 2025-01-14 Yuxin Fan , Yuxiang Wang , Lipeng Liu , Xirui Tang , Na Sun , Zidong Yu

Unsupervised multiplex graph learning (UMGL) has been shown to achieve significant effectiveness for different downstream tasks by exploring both complementary information and consistent information among multiple graphs. However, previous…

Machine Learning · Computer Science 2023-08-04 Liang Peng , Xin Wang , Xiaofeng Zhu

Academic literature retrieval is concerned with the selection of papers that are most likely to match a user's information needs. Most of the retrieval systems are limited to list-output models, in which the retrieval results are isolated…

Information Retrieval · Computer Science 2017-11-27 Danping Liao , Yuntao Qian

Climate science has become more ambitious in recent years as global awareness about the environment has grown. To better understand climate, historical climate (e.g. archived meteorological variables such as temperature, wind, water, etc.)…

Databases · Computer Science 2022-10-31 Jiantao Wu , Fabrizio Orlandi , Declan O'Sullivan , Soumyabrata Dev

Continual Graph Learning (CGL) enables models to incrementally learn from streaming graph-structured data without forgetting previously acquired knowledge. Experience replay is a common solution that reuses a subset of past samples during…

Machine Learning · Computer Science 2026-03-31 Qiao Yuan , Sheng-Uei Guan , Pin Ni , Tianlun Luo , Ka Lok Man , Prudence Wong , Victor Chang

Managing evolving graph data presents substantial challenges in storage and privacy, and training graph neural networks (GNNs) on such data often leads to catastrophic forgetting, impairing performance on earlier tasks. Despite existing…

Machine Learning · Computer Science 2025-05-29 Yinlin Zhu , Miao Hu , Di Wu

Recent advancements in Large Language Models (LLMs) have transformed code generation from natural language queries. However, despite their extensive knowledge and ability to produce high-quality code, LLMs often struggle with contextual…

Artificial Intelligence · Computer Science 2025-07-17 Mihir Athale , Vishal Vaddina

Two architectures that generalize convolutional neural networks (CNNs) for the processing of signals supported on graphs are introduced. We start with the selection graph neural network (GNN), which replaces linear time invariant filters…

Signal Processing · Electrical Eng. & Systems 2019-01-30 Fernando Gama , Antonio G. Marques , Geert Leus , Alejandro Ribeiro

Temporal knowledge graph (TKG) reasoning aims to infer future facts at unseen timestamps from temporally evolving entities and relations. Despite recent progress, existing approaches still suffer from inherent limitations due to their…

Artificial Intelligence · Computer Science 2026-04-14 Shuai-Long Lei , Xiaobin Zhu , Jiarui Liang , Guoxi Sun , Zhiyu Fang , Xu-Cheng Yin

In recent years, the introduction of knowledge graphs (KGs) has significantly advanced recommender systems by facilitating the discovery of potential associations between items. However, existing methods still face several limitations.…

Information Retrieval · Computer Science 2025-04-18 Ziqiang Cui , Yunpeng Weng , Xing Tang , Fuyuan Lyu , Dugang Liu , Xiuqiang He , Chen Ma

The operation of urban transportation produces massive traffic data, which contains abundant information and is of great significance for the study of intelligent transportation systems. In particular, with the improvement of perception…

Computers and Society · Computer Science 2022-03-09 Guilong Li , Yixian Chen , Jun Xie , Qinghai Lin , Zhaocheng He
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