We introduce a model of the economy as a social network. Two agents are linked to the extent that they transact with each other. This generates well-defined topological notions of location, neighborhood and closeness. We investigate the implications of our model for monetary economics. When a...

The paper concerns a dynamic model of influence in which agents have to make a yes-no decision. Each agent has an initial opinion, which he may change during different phases of interaction, due to mutual influence among agents. The influence mechanism is assumed to be stochastic and to follow a...

It has been widely recognized that the poor spends a significant proportion of their income on social spending even at the expense of basic consumption. What are the motives behind the observed lavish social spending among the poor? We attempt to test three competing explanations at the social...

On recent years, researchers in management and strategic management have developed a common interest in social capital, and social network, as a possibility for the organizations to enhance their performance. The strategic network perspective avers that the embeddedness of firms in networks of...

The paper discusses opportunities to utilize the series of micro-blogs as provided by the Twitter in observation of opinion dynamics. The spontaneity of tweets is more, as the service is attached more to the mobile communications. The extraction of information in the series of tweets is...

We generalize a yes-no model of influence in a social network with a single step of mutual influence to a framework with iterated influence. Each agent makes an acceptance- rejection decision and has an inclination to say either ‘yes’ or ‘no’. Due to influence by others, an agent's...

We present and discuss a mathematical procedure for identification of small "communities" or segments within large bipartite networks. The procedure is based on spectral analysis of the matrix encoding network structure. The principal tool here is localization of eigenvectors of the matrix, by...

The study considers a regional social community concept. A regional social community is regarded as a system of the community members' interpersonal and intergroup attitudes based on their awareness of the solidarity in interests, values and life expectations, mutual support, loyalty and...

Настоящая работа представляет собой обзор моделей влияния в социальных сетях. В обзоре рассмотрены основные классы моделей социальных сетей и установлено...