Composition of Web Services Based on Dynamic QoS
Shuyun Han · 2012
In composition of Web services,several current standards of QoS focus on the quality of independent Web services,and ignore the dynamic,compositional,network-savvy characteristics of Web services.In addition,many combination algorithms emphasize the overall quality of compositional services and ignore the constraint conditions of users.This results in the recalculation of composition of Web services.Therefore,considering the dynamic characteristics of the service and the efforts of collaboration between the services,the author put forward a dynamic standard of QoS.At the same time,the author also took into account the constraint conditions of users and the overall quality of compositional services and applied the constraint conditions of users in the composition process.Finally,we proved that the dynamic QoS standard can compute the real service quality of service entity and that applying the constraint conditions of users in the composition process can avoid the service re-computing effectively.