Evaluation of present strategies in multiagent product market model with network externality

In this paper, we design a multiagent product market model with network externality, and evaluate the effectiveness of present strategy, which is one of sales promotion like that a sales corporation chooses customers in a market and gives him/her a product without compensation. The proposed multiagent model can explicitly involve customers' interaction network, and we can clarify the relationship between the effectiveness of network externality and the structure of customers interaction network. The customers interaction networks we prepared contain 4 types; random, regular, small world, and scale-free. In the computer simulations, we evaluated the effectiveness of two present strategies; a simple present strategy and friend present strategy. In the random and small world graph, which are high-clustered networks, the simple present strategy is effective that a promoter randomly chooses customers who are given the product. Otherwise, in the regular and scale-free graph, which have network hubs with much links to other customers, the friend present strategy is effective that a promoter determines presented customers by using of customer's relationship like friendship.