Wei Song 0006

dblp:62/1539-6 · DBLP profile ↗
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12ranked-venue papers in the field
3as first author
5since 2021 · last 2024
0000-0002-9218-6361ORCID · conflict

Domains — venue-derived; a paper can count in several

Knowledge Engineering, Semantic Web & Information Systems · 5 (1 first)Database Systems & Data Management · 3 (2 first)Information Retrieval & Web Search · 3Data Mining & Knowledge Discovery · 1
YearPublicationVenuePosition
2024 Differentially private trajectory event streams publishing under data dependence constraints
Yuan Shen 0005, Wei Song 0006, Yang Cao 0011, Zechen Liu, Zhiyong Peng 0001
Inf. Sci.2
2023 A New Reconstruction Attack: User Latent Vector Leakage in Federated Recommendation
Wei Song 0006
DASFAA (2)2
2022 Learning Concept Prerequisite Relations from Educational Data via Multi-Head Attention Variational Graph Auto-Encoders
abstract
Recently, the topic of learning concept prerequisite relations has gained the attention of many researchers, which is crucial in the learning process for a learner to decide an optimal study order. However, the existing work still ignores three key factors. (1) People's cognitive differences could make a difference for annotating the prerequisite relation between resources (e.g., courses, textbooks) or concepts (e.g., binary tree). (2) The current vertex (resources or concepts) can be affected by the feature of the neighbor vertex in the resource or concept graph. (3) The feature information of the resource graph may affect the concept graph. To integrate the above factors, we propose an end-to-end graph network-based model called Multi-Head Attention Variational Graph Auto-Encoders (MHAVGAE ) to learn the prerequisite relation between concepts via a resource-concept graph. To address the first two problems, we introduce the multi-head attention mechanism to operate and compute the hidden representations of each vertex over the resource-concept graph. Then, we design a gated fusion mechanism to integrate the feature information of the resource and concept graphs to enrich concept content features. Finally, we conduct numerous experiments to demonstrate the effectiveness of the MHAVGAE across multiple widely used metrics compared with the state-of-the-art methods. The experimental results show that the performance of the MHAVGAE almost outperforms all the baseline methods.
Nanzhou Lin, Xuelong Zhang, Wei Song 0006, Xiandi Yang, Zhiyong Peng 0001
WSDM4
2021 Friend Relationships Recommendation Algorithm in Online Education Platform
Jingda Kang, Wei Song 0006, Xiandi Yang
WISA3
2021 Privacy-Preserving Polynomial Evaluation over Spatio-Temporal Data on an Untrusted Cloud Server
Wei Song 0006, Mengfei Tang, Yuan Shen 0005, Yang Cao 0011, Qian Wang 0002, Zhiyong Peng 0001
DASFAA (1)1
2020 Efficient Patient-Friendly Medical Blockchain System Based on Attribute-Based Encryption
Wei Song 0006, Yuan Shen 0005
WISA2
2020 Predicting MOOCs Dropout with a Deep Model
Yuling Shi, Xiandi Yang, Wei Song 0006, Zhiyong Peng 0001
WISE (2)5
2019 Adaptive Authorization Access Method for Medical Cloud Data Based on Attribute Encryption
Nanzhou Lin, Wei Song 0006, Yuan Shen 0005, Xiandi Yang
WISA3
2019 Select the Best for Me: Privacy-Preserving Polynomial Evaluation Algorithm over Road Network
Wei Song 0006, Chengliang Shi, Yuan Shen 0005, Zhiyong Peng 0001
DASFAA (2)1
2017 Tell me the truth: Practically public authentication for outsourced databases with multi-user modification
Wei Song 0006, Bing Wang 0005, Qian Wang 0002, Zhiyong Peng 0001, Wenjing Lou
Inf. Sci.1
2014 A Time-Based Group Key Management Algorithm Based on Proxy Re-encryption for Cloud Storage
Yihui Cui, Zhiyong Peng 0001, Wei Song 0006, Fangquan Cheng, Luxiao Ding
APWeb3
2014 Query Authentication over Cloud Data from Multiple Contributors
Ge Xie, Zhiyong Peng 0001, Wei Song 0006
APWeb3