Download now Free registration required
The authors develop a simple theoretical framework for the evolution of weighted networks that is consistent with a number of stylized features of real-world data. In the framework, the Barabasi-Albert model of network evolution is extended by assuming that link weights evolve according to a geometric Brownian motion. The model is verified by means of simulations and real world trade data. They show that the model correctly predicts the intensity and growth distribution of links, the size-variance relationships of the growth of link weights, the relationship between the degree and strength of nodes, as well as the scale-free structure of the network.
- Format: PDF
- Size: 272.58 KB