关键词: 服务组合, 烟花算法, 服务质量

Abstract: Under the background of big data,to select the suitable Web services from substantial candidate services and to compose the composition service which could accomplish complex value added service demand,an Improved Firework Algorithm (IFWA) was proposed and applied to the discrete service composition optimization problem.According to the contribution of fireworks to the mutated spark,Gauss mutation probability was introduced,which made Gauss mutation have the directivity and maintain the population diversity.In the process of selecting fireworks,the elite selection strategy was adopted to reduce the time expenses of algorithm effectively.The feasibility and validity of the proposed algorithm was verified with a large number of experimental results.

Key words: service composition, firework algorithm, quality of service