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LaFT-tree: perceiving the expansion trace of one's circle of friends in online social networks

Published: 04 February 2013 Publication History

Abstract

Many patterns have been discovered to explain and analyze how people make friends. Among them is the triadic closure, supported by the principle of the transitivity of friendship, which means for an individual the friends of her friend are more likely to become her new friends. However, people's motivations under this principle haven't been well studied, and it's still unknown that how this principle works in diverse situations.
In this paper, we try to study this principle deeply based on the behavior modeling. We study how one expands her egocentric network via her friends, also called intermediaries, based on the transitivity of friendship. We propose LaFT-Tree, a tree-based representation of friendship formation inspired from triadic closure. LaFT-Tree provides a hierarchical view of the flat structure of one's egocentric network by visualizing the expansion trace of one's egocentric network. We model people's friend-making behaviors using LaFT-LDA, a generative model for LaFT-Tree learning.
The proposed model is evaluated on both synthetic and real-world social networks and experimental results demonstrate the effectiveness of LaFT-LDA for LaFT-Tree inference. We also present some interesting applications of the LaFT-Tree, showing that our model can be generalized and benefit other social network analysis tasks.

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      cover image ACM Conferences
      WSDM '13: Proceedings of the sixth ACM international conference on Web search and data mining
      February 2013
      816 pages
      ISBN:9781450318693
      DOI:10.1145/2433396
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      Published: 04 February 2013

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      Author Tags

      1. intermediary inference
      2. laft-tree
      3. link formation
      4. link prediction
      5. social networks
      6. transitivity of friendship
      7. triadic closure

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