Title
Inferring Unobservable Inter-community Links in Large Social Networks
Abstract
Social networks can be used to model social interactions between individuals. In many circumstances, not all interactions between individuals are observed. In such cases, a social network is constructed with the data that has been observed, as this is the best one can do. Recent research has attempted to predict future links in a social network, though this has proven a very challenging task. Rather than predicting future links, we propose an inference method for recovering the links in a social network that already exist but that have not been observed. In addition, our approach automatically identifies groups of individuals that form tight-knit communities and models the intra and inter-community interactions. At this higher level of abstraction and for a social network built frommobile phone calls, our method is able to accurately identify a subset of 10% of all community pairs where about 50% of the pairs have had unobserved communication between them, an improvement of about four times over a subset of the same size with randomly chosen pairs. To the best of our knowledge, this is the first method that infers links that exist but are unobservable in a phone call-based social network. In addition, we perform the inference at the community level, where the discovery of unobserved inter-community communication can provide further insight into the organizational structure of the social network andcan identify social groups that may share common interests.
Year
DOI
Venue
2009
10.1109/CSE.2009.197
CSE (4)
Keywords
Field
DocType
higher level,social network,future link,large social networks,frommobile phone call,social group,form tight-knit community,inference method,social interaction,inferring unobservable inter-community links,community level,community pair,social groups,social networks,organizational structure,data mining,feature extraction,artificial neural networks,logistics
Dynamic network analysis,Social group,Organizational network analysis,Social network,Organizational structure,Computer science,Inference,Computer network,Phone,Artificial intelligence,Unobservable,Machine learning
Conference
Citations 
PageRank 
References 
1
0.34
11
Authors
5
Name
Order
Citations
PageRank
Heath Hohwald11156.75
Manuel Cebrian219612.40
Arturo Canales390.81
Rubén Lara454336.35
Nuria Oliver54368357.22