diversity and popularity in social networks
AbstractHomophily, the tendency of linked agents to have similar characteristics, is an important feature of social networks. We present a new model of network formation that allows the linking process to depend on individuals types and study the impact of such a bias on the network structure. Our main results fall into three categories: (i) we compare the distributions of intra- and inter-group links in terms of stochastic dominance, (ii) we show how, at the group level, homophily depends on the groups size and the details of the formation processs, and (iii) we understand precisely the determinants of local homophily at the individual level. Especially, we find that popular individuals have more diverse networks. Our results are supported empirically in the AddHealth data looking at networks of social connections between boys and girls.
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Bibliographic InfoPaper provided by Society for Economic Dynamics in its series 2009 Meeting Papers with number 287.
Date of creation: 2009
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Other versions of this item:
- Yann Bramoulle & Brian Rogers, 2009. "Diversity and Popularity in Social Networks," Discussion Papers 1475, Northwestern University, Center for Mathematical Studies in Economics and Management Science.
- Yann Bramoullé & Brian W. Rogers, 2009. "Diversity and Popularity in Social Networks," Cahiers de recherche 0903, CIRPEE.
- A14 - General Economics and Teaching - - General Economics - - - Sociology of Economics
- D85 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Network Formation
- I21 - Health, Education, and Welfare - - Education - - - Analysis of Education
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