Title
Emergence Of Scale-Free Leadership Structure In Social Recommender Systems
Abstract
The study of the organization of social networks is important for the understanding of opinion formation, rumor spreading, and the emergence of trends and fashion. This paper reports empirical analysis of networks extracted from four leading sites with social functionality (Delicious, Flickr, Twitter and YouTube) and shows that they all display a scale-free leadership structure. To reproduce this feature, we propose an adaptive network model driven by social recommending. Artificial agent-based simulations of this model highlight a "good get richer" mechanism where users with broad interests and good judgments are likely to become popular leaders for the others. Simulations also indicate that the studied social recommendation mechanism can gradually improve the user experience by adapting to tastes of its users. Finally we outline implications for real online resource-sharing systems.
Year
DOI
Venue
2011
10.1371/journal.pone.0020648
PLOS ONE
Keywords
Field
DocType
resource sharing,information retrieval,scale free,user experience,network model,recommender system,social network
Data science,Recommender system,User experience design,Social network,Biology,Rumor,Scale-free network,Bioinformatics,Social support,Empirical research,The Internet
Journal
Volume
Issue
ISSN
6
7
1932-6203
Citations 
PageRank 
References 
20
1.02
25
Authors
5
Name
Order
Citations
PageRank
Tao Zhou12744152.77
Matus Medo226321.28
Giulio Cimini312613.77
Zi-Ke Zhang440328.84
Yi-Cheng Zhang545125.98