Abstract
The Web service composition (WSC) problem on behavioral descriptions deals with the automatic construction of a coordinator web service to control a set of web services to reach the goal states. As such, WSC is one of the fundamental techniques to enable the Service Oriented Architecture on the Web. Despite its importance and implications, however, very few studies exist on the computational complexities of the WSC problem. In this paper, we present two novel theoretical findings on WSC problems: (1) Solving the WSC problem with complete information is EXP-hard, and (2) Solving the WSC problem with incomplete information is 2-EXP-hard. These findings imply that more efforts to devise efficient approximate solutions to the WSC problem be needed.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
