Service composition model optimization strategy based on execution log

In order to make the service composition with lower consumption resource and reduce execution time of service composition process, this paper proposes a method to optimize service composition model based on analysis of service composition execution log information and optimization of its Petri net model, which includes three steps: firstly, the log information and extracting related data are collected; secondly, the structure of Petri net is restructured with corresponding algorithm; at last, the optimal combined model structure is proposed by using the collection information and the restructured model structure of Petri net. The experimental results show that the optimized model consumes less system resources.