A well known and established model in communication policy in sociology and marketing is that of opinion leadership …. Opinion leaders are actors in a society who are able to affect the behavior of other members called followers. Hence, opinion … effect of different opinion leader-follower structures in markets or other collective decision-making situations in a society …

The paper presents a survey on selected models of opinion dynamics. Both discrete (more precisely, binary) opinion … models as well as continuous opinion models are discussed. We focus on frameworks that assume non-Bayesian updating of …

We consider a model of competitive opinion formation in which three persuaders characterized by (possibly unequal … the extreme and opposite opinions, and the third one has the centrist opinion. Each persuader chooses one individual to … the average long run opinion as close as possible to his own opinion. We examine the opinion convergence and consensus …

We deliver a short overview of di erent centrality measures and influence concepts in social networks, and present the … centrality: the ones based on degree, closeness, betweenness, and the eigenvector-related measures. We consider centrality of a … node and of a network. Moreover, we give a classi cation of the centrality measures based on a topology of network flows …

A well-known model in sociology and marketing is that of opinion leadership. Opinion leaders are actors who are able to … affect the behavior of their followers. Hence, opinion leaders have some power over their followers, and they can exercise … this power by influencing their followers choice of action. We study a two-action model for a society with opinion leaders …