Measuring and Analyzing the Openness of the Web2.0Service Network for Improving the Innovation Capacityof the Web2.0 System through Collective Intelligence

摘要

Web2.0 users can create new services by combining existing Web2.0 services that offer open programming interfaces. This system of service compo-sition forms a network, which we call the Web2.0 service network. A node of the Web2.0 service network represents a service. A link between two nodes ex-ists, if another Web2.0 service (i.e. mashup) uses the linked services. The Web2.0 service network can be understood as an innovation system that creates value through the composition of services, representing the collective intelli-gence of users. Within this paper, we analyze the openness of the Web2.0 ser-vice network. Openness, which is an indicator for the innovation potential of a network, is measured using the Enhanced-EIS-Indexes. These indexes are based on Krackhardt and Stern's EI-Index. The analysis results of the indexes show that the Web2.0 service network is not as open as the evolutionary analysis of the Web2.0 service network suggested. The slight closeness of the Web2.0 ser-vice network has been identified by the Agent Behavior Index EIS, which highlighted that relatively more links are created within subgroups than be-tween subgroups. It indicates that factors such as service ownership and type of service have an impact on innovation within the network.