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2015 | OriginalPaper | Buchkapitel

Privacy-Preserving Link Prediction in Decentralized Online Social Networks

verfasst von : Yao Zheng, Bing Wang, Wenjing Lou, Y. Thomas Hou

Erschienen in: Computer Security -- ESORICS 2015

Verlag: Springer International Publishing

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Abstract

We consider the privacy-preserving link prediction problem in decentralized online social network (OSNs). We formulate the problem as a sparse logistic regression problem and solve it with a novel decentralized two-tier method using alternating direction method of multipliers (ADMM). This method enables end users to collaborate with their online service providers without jeopardizing their data privacy. The method also grants end users fine-grained privacy control to their personal data by supporting arbitrary public/private data split. Using real-world data, we show that our method enjoys various advantages including high prediction accuracy, balanced workload, and limited communication overhead. Additionally, we demonstrate that our method copes well with link reconstruction attack.

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Fußnoten
1
We can rearrange the columns and rows of any A to separate the public features from the private features and the private links.
 
2
Note that the intercept v is not regularized. Equations 9 and 10 can be modified to incorporate the intercept by dropping the soft thresholding operator on the corresponding element in \(z_{^{^{\updownarrow }}}\).
 
3
In practice, we assume m to be small.
 
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Metadaten
Titel
Privacy-Preserving Link Prediction in Decentralized Online Social Networks
verfasst von
Yao Zheng
Bing Wang
Wenjing Lou
Y. Thomas Hou
Copyright-Jahr
2015
DOI
https://doi.org/10.1007/978-3-319-24177-7_4