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Graph Contrastive Learning (GCL) has emerged as a promising approach in the realm of graph self-supervised learning. Prevailing GCL methods mainly derive from the principles of contrastive learning in the field of computer vision: modeling…

Machine Learning · Computer Science 2023-08-03 Zhiyuan Ning , Pengfei Wang , Pengyang Wang , Ziyue Qiao , Wei Fan , Denghui Zhang , Yi Du , Yuanchun Zhou

Deep Knowledge Tracing (DKT) models student learning behavior by using Recurrent Neural Networks (RNNs) to predict future performance based on historical interaction data. However, the original implementation relied on standard RNNs in the…

Machine Learning · Computer Science 2025-04-30 Altun Shukurlu

Molecular representation learning contributes to multiple downstream tasks such as molecular property prediction and drug design. To properly represent molecules, graph contrastive learning is a promising paradigm as it utilizes…

Machine Learning · Computer Science 2022-03-14 Yin Fang , Qiang Zhang , Haihong Yang , Xiang Zhuang , Shumin Deng , Wen Zhang , Ming Qin , Zhuo Chen , Xiaohui Fan , Huajun Chen

Contrastive Learning (CL) has recently emerged as a powerful technique in recommendation systems, particularly for its capability to harness self-supervised signals from perturbed views to mitigate the persistent challenge of data sparsity.…

Information Retrieval · Computer Science 2025-04-08 Zheyu Chen , Jinfeng Xu , Yutong Wei , Ziyue Peng

Named Entity Recognition task is one of the core tasks of information extraction. Word ambiguity and word abbreviation are important reasons for the low recognition rate of named entities. In this paper, we propose a novel named entity…

Computation and Language · Computer Science 2022-08-16 Renjie Zhou , Qiang Hu , Jian Wan , Jilin Zhang , Qiang Liu , Tianxiang Hu , Jianjun Li

Graph-level contrastive learning, aiming to learn the representations for each graph by contrasting two augmented graphs, has attracted considerable attention. Previous studies usually simply assume that a graph and its augmented graph as a…

Artificial Intelligence · Computer Science 2024-04-15 Yanbei Liu , Yu Zhao , Xiao Wang , Lei Geng , Zhitao Xiao

Knowledge Tracing (KT) models students' knowledge states based on learning interactions to predict performance. While deep learning-based KT models have boosted predictive accuracy, most models rely on deterministic vector embeddings and…

Artificial Intelligence · Computer Science 2026-05-12 Siyu Wu , Cong Xu , Wei Zhang

Knowledge Graph Embeddings (KGE) aim to map entities and relations to low dimensional spaces and have become the \textit{de-facto} standard for knowledge graph completion. Most existing KGE methods suffer from the sparsity challenge, where…

Artificial Intelligence · Computer Science 2023-02-14 Zhaoxuan Tan , Zilong Chen , Shangbin Feng , Qingyue Zhang , Qinghua Zheng , Jundong Li , Minnan Luo

Graph contrastive learning (GCL) aims to align the positive features while differentiating the negative features in the latent space by minimizing a pair-wise contrastive loss. As the embodiment of an outstanding discriminative unsupervised…

Machine Learning · Computer Science 2023-12-27 Jiangmeng Li , Yifan Jin , Hang Gao , Wenwen Qiang , Changwen Zheng , Fuchun Sun

Knowledge Tracing (KT), which aims to model student knowledge level and predict their performance, is one of the most important applications of user modeling. Modern KT approaches model and maintain an up-to-date state of student knowledge…

Computers and Society · Computer Science 2022-10-18 Chunpai Wang , Shaghayegh Sahebi , Siqian Zhao , Peter Brusilovsky , Laura O. Moraes

Continual learning (CL) studies the problem of learning a sequence of tasks, one at a time, such that the learning of each new task does not lead to the deterioration in performance on the previously seen ones while exploiting previously…

Machine Learning · Computer Science 2020-11-03 Ammar Shaker , Francesco Alesiani , Shujian Yu , Wenzhe Yin

As the core of the Knowledge Tracking (KT) task, assessing students' dynamic mastery of knowledge concepts is crucial for both offline teaching and online educational applications. Since students' mastery of knowledge concepts is often…

Artificial Intelligence · Computer Science 2023-09-06 Moyu Zhang , Xinning Zhu , Chunhong Zhang , Wenchen Qian , Feng Pan , Hui Zhao

Knowledge tracing (KT), wherein students' problem-solving histories are used to estimate their current levels of knowledge, has attracted significant interest from researchers. However, most existing KT models were developed with an…

Computation and Language · Computer Science 2024-06-19 Heeseok Jung , Jaesang Yoo , Yohaan Yoon , Yeonju Jang

For offering proactive services to students in intelligent education, one of the fundamental tasks is predicting their performance (e.g., scores) on future exercises, where it is necessary to track each student's knowledge acquisition…

Computers and Society · Computer Science 2019-06-14 Qi Liu , Zhenya Huang , Yu Yin , Enhong Chen , Hui Xiong , Yu Su , Guoping Hu

Graph recommender (GR) is a type of graph neural network (GNNs) encoder that is customized for extracting information from the user-item interaction graph. Due to its strong performance on the recommendation task, GR has gained significant…

Machine Learning · Computer Science 2024-07-26 Wenjie Yang , Shengzhong Zhang , Jiaxing Guo , Zengfeng Huang

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

Knowledge tracing (KT) plays a crucial role in computer-aided education and intelligent tutoring systems, aiming to assess students' knowledge proficiency by predicting their future performance on new questions based on their past response…

Computers and Society · Computer Science 2024-06-03 Jiajun Cui , Minghe Yu , Bo Jiang , Aimin Zhou , Jianyong Wang , Wei Zhang

Despite deep neural networks have demonstrated extraordinary power in various applications, their superior performances are at expense of high storage and computational costs. Consequently, the acceleration and compression of neural…

Computer Vision and Pattern Recognition · Computer Science 2017-12-20 Zehao Huang , Naiyan Wang

Graph Neural Networks (GNNs) have become powerful tools in modeling graph-structured data in recommender systems. However, real-life recommendation scenarios usually involve heterogeneous relationships (e.g., social-aware user influence,…

Information Retrieval · Computer Science 2023-03-03 Mengru Chen , Chao Huang , Lianghao Xia , Wei Wei , Yong Xu , Ronghua Luo

Cross-media retrieval is a research hotspot in multimedia area, which aims to perform retrieval across different media types such as image and text. The performance of existing methods usually relies on labeled data for model training.…

Multimedia · Computer Science 2018-03-13 Xin Huang , Yuxin Peng
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