Research on the evolving model of product warranty network

In this paper, we explore the connotation of product warranty network based on the theory of cooperative networks in corporation and product warranty. On the rule of weight preferential attachment, local-world, attractive factor, the evolving model of product warranty network is proposed, giving distribution results of vertex weight and link weight. Both analysis and simulation results show that product warranty network demonstrates the characteristic of scale-free, which indicates that assuring relationship between corporations distributes unevenly. Most corporations have a small number of assuring relationships, whereas a few core corporations, exist as hubs in network, possess abundant assuring relationships, thus these corporations have the power of influence on the stability of the whole product warranty network.