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• W4385462804 abstract "Context information is the key element to realizing dynamic access control of big data. However, existing context-aware access control (CAAC) methods do not support automatic context awareness and cannot automatically model and reason about context relationships. To solve these problems, this article proposes a weighted GraphSAGE-based context-aware approach for big data access control. First, graph modeling is performed on the access record data set and transforms the access control context-awareness problem into a graph neural network (GNN) node learning problem. Then, a GNN model WGraphSAGE is proposed to achieve automatic context awareness and automatic generation of CAAC rules. Finally, weighted neighbor sampling and weighted aggregation algorithms are designed for the model to realize automatic modeling and reasoning of node relationships and relationship strengths simultaneously in the graph node learning process. The experiment results show that the proposed method has obvious advantages in context awareness and context relationship reasoning compared with similar GNN models. Meanwhile, it obtains better results in dynamic access control decisions than the existing CAAC models." @default.
• W4385462804 created "2023-08-02" @default.
• W4385462804 creator A5018956655 @default.
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• W4385462804 date "2023-08-01" @default.
• W4385462804 modified "2023-09-27" @default.
• W4385462804 title "A Weighted GraphSAGE-Based Context-Aware Approach for Big Data Access Control" @default.
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• W4385462804 doi "https://doi.org/10.1089/big.2021.0473" @default.
• W4385462804 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/37527185" @default.
• W4385462804 hasPublicationYear "2023" @default.
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