Web Service Composition Method Based on FAHP and TOPSIS
Zhanlin Yu, Longchang Zhang, Chengwen Zhang · Journal of Communications and Information Sciences · 2012
Since open and dynamic Internet environment increased the uncertainty of decision-making, the composition service selection based on quality of service (QoS) is still challenging. Besides, user’s weight expressed by fuzzy pair-wise comparison matrix is closer to user’s habits. To solve the difficulties above, Web service composition method based on FAHP and TOPSIS (WSCM_FT) is presented to support the hybrid QoS model expressed by real numbers, interval numbers, triangular fuzzy numbers and intuitionistic fuzzy numbers and user’s weight model expressed by fuzzy pair-wise comparison matrix. WSCA_AT includes five main steps: calculating user’s weight, converting hybrid QoS into intervals, weighting normalized decision-matrix, determining the positive and negative ideal solution, and calculating the close-degrees of candidates. Finally, some experiments are given using actual QoS data to demonstrate the benefits and effectiveness of our approach.