Socioeconomic Networks with Long-Range Interactions

@misc{citeulike:2109581, abstract = {In well networked communities, information is often shared informally among an individual's direct and indirect acquaintances. Here we study a modified version of a model previously proposed by Jackson and Wolinsky to account for communicating information and allocating goods in socioeconomic networks. The model defines a utility function of node \$i\$ which is a weighted sum of contributions from all nodes accessible from \$i\$. First, we show that scale-free networks are more efficient than Poisson networks for the range of average degree typically found in real world networks. We then study an evolving network mechanism where new nodes attach to existing ones preferentially by utility. We find the presence of three regimes: scale-free (rich-get-richer), fit-get-rich, and Poisson degree distribution. The fit-get-rich regime is characterized by a decrease in average path length.}, author = {Carvalho, Rui and Iori, Giulia }, citeulike-article-id = {2109581}, eprint = {0706.0024v1}, keywords = {economics, social\_network}, month = {Oct}, posted-at = {2007-12-14 01:28:31}, priority = {5}, title = {Socioeconomic Networks with Long-Range Interactions}, url = {http://arxiv.org/abs/0706.0024v1}, year = {2007} }

TY - ELEC ID - citeulike:2109581 L3 - citeulike-article-id:2109581 N2 - In well networked communities, information is often shared informally among an individual's direct and indirect acquaintances. Here we study a modified version of a model previously proposed by Jackson and Wolinsky to account for communicating information and allocating goods in socioeconomic networks. The model defines a utility function of node $i$ which is a weighted sum of contributions from all nodes accessible from $i$. First, we show that scale-free networks are more efficient than Poisson networks for the range of average degree typically found in real world networks. We then study an evolving network mechanism where new nodes attach to existing ones preferentially by utility. We find the presence of three regimes: scale-free (rich-get-richer), fit-get-rich, and Poisson degree distribution. The fit-get-rich regime is characterized by a decrease in average path length. TI - Socioeconomic Networks with Long-Range Interactions KW - economics KW - social_network AU - Carvalho, Rui AU - Iori, Giulia PY - 2007/Oct/09/ UR - http://arxiv.org/abs/0706.0024v1 ER -