sign inference for dynamic signed networks via dictionary learning
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ID: 217400
2013
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Abstract
Mobile online social network (mOSN) is a burgeoning research area. However, most existing works referring to mOSNs deal with static network structures and simply encode whether relationships among entities exist or not. In contrast, relationships in signed mOSNs can be positive or negative and may be changed with time and locations. Applying certain global characteristics of social balance, in this paper, we aim to infer the unknown relationships in dynamic signed mOSNs and formulate this sign inference problem as a low-rank matrix estimation problem. Specifically, motivated by the Singular Value Thresholding (SVT) algorithm, a compact dictionary is selected from the observed dataset. Based on this compact dictionary, the relationships in the dynamic signed mOSNs are estimated via solving the formulated problem. Furthermore, the estimation accuracy is improved by employing a dictionary self-updating mechanism.
| Reference Key |
cen2013journalsign
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|---|---|
| Authors | ;Yi Cen;Rentao Gu;Yuefeng Ji |
| Journal | Chemico-biological interactions |
| Year | 2013 |
| DOI |
10.1155/2013/708581
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| URL | |
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