Service Selection Algorithm of Two-layer QoS Model based on Functional Grouping
Abstract: With the development
and application of service computing technology, quality of service has become
one of the important bases for the selection of web services in service
composition. In order toavoid the influence of functional difference of
services on the QoS of services in the service composition, this paper proposes
a two-layer QoS model service selection algorithm based on feature grouping.
First of all, in the process of service composition, the services are grouped
according to their function, then the services in the same group are further
grouped by QoS, which includes common QoS and reputation degree QoS based on
the subjective and objective factors. The reliability of service is defined to
express the common QoS, while a kind of evaluation method of reputation degree
is raised to express the reputation degree QoS. Experimental results show that
this method can obtain web services with high reliability and high credit
standing; meanwhile it can increase the success rate of web service
composition.
Author: Hongxia Wang, Jianjia
Sheng
Journal Code: jptkomputergg160064
