Predicting temporal centrality in Opportunistic Mobile Social Networks based on social behavior of people
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- 作者：Huan Zhou ; Linping Tong ; Shouzhi Xu ; Chungming Huang…
- 关键词：Opportunistic Mobile Social Networks ; Centrality ; Real mobility trace ; Prediction method
- 刊名：Personal and Ubiquitous Computing
- 出版年：2016
- 出版时间：November 2016
- 年：2016
- 卷：20
- 期：6
- 页码：885-897
- 全文大小：931 KB
- 刊物类别：Computer Science
- 刊物主题：User Interfaces and Human Computer Interaction
- 出版者：Springer London
- ISSN：1617-4917
- 卷排序：20
文摘
Predicting the centrality of nodes is a significant problem for different applications in Opportunistic Mobile Social Networks (OMSNs). However, when calculating such metrics, current studies focused on analyzing static networks that do not change over time or using aggregated contact information over a period of time. Furthermore, the centrality measured in the past is not verified whether it is useful as a predictor for the future. In this paper, in order to capture the dynamic behavior of people, we focus on predicting nodes’ future centrality (importance) from the temporal perspective using real mobility traces in OMSNs. Three important centrality metrics, namely betweenness, closeness, and degree centrality, are considered. Through real trace-driven simulations, we find that nodes’ future centrality is highly predictable due to natural social behavior of people. Then, based on the observations in the simulation, we design several reasonable prediction methods to predict nodes’ future temporal centrality. Finally, extensive real trace-driven simulations are conducted to evaluate the performance of our proposed methods. The results show that the Recent Weighted Average Method performs best in the MIT Reality trace, and the recent Uniform Average Method performs best in the Infocom 06 trace. Furthermore, we also evaluate the impact of parameters m and w on the performance of the proposed methods and find proper values of different parameters for each proposed method at the same time.