Research on the Improvement of Traditional Linear Weighted Algorithm for QoS-based Web Service Selection

Yuqiang Li, Wei Zhao, Lei Che
2014 International Journal of Hybrid Information Technology  
At present, quality of service (QoS) has become an important guidance in selecting a satisfactory web service when many similar web services provide overlapping or identical functionalities. Therefore people have carried out many studies on definition and standardization of QoS properties and QoS-based selecting algorithms of web service. Current web service selection usually adopt linear weighted algorithm. But it still has some limitations. This paper proposes a new QoS-based algorithm
more » ... ed from traditional linear weighted algorithm for web service selection. The main improvements include removing distinction of QoS properties value tendency, selecting fixed value and a hybrid subjective-objective approach to set the weight of each QoS property. We also present the analysis of the time complexity. Finally we do a comparison experiment between our algorithm and traditional algorithm. The results show that the improvements are feasible and our algorithm has better performance. method of QoS value of a web services is given in Section 5 and its algorithm complexity will be discussed in Section 6. In Section 7, we compare our algorithm with the traditional linear weighted algorithm and summarize the experiment results. Finally in Section 8, conclusions will be made along with prospective plans for our further study.
doi:10.14257/ijhit.2014.7.4.21 fatcat:un723rnqkjde3ipi5yo3dkyofy