In this paper a network model is developed in which three players sequentially choose their strategies. In the first … stage, a profit–maximizing network firm chooses the price and thus the size of the network. In the second stage the … consumers decide whether to join in the network or not. In the last stage a hacker has the opportunity to hack the network and …

network of agents. In our model, agents are identically informed a priori and observe network neighbors’ actions as well as … observed payoffs and imitate observed actions. Our results also allow us to interpret critical mass and network brokerage …

network core do exhibit cross-sectional evidence of polarization and are responsible for the majority of tweets received …

. Specifically, based on the graph convolutional network, a multi-layer semantic model is designed to capture the semantic relations …