In a Web environment, Web services will typically be configured together to serve a specific purpose. Many web services provide similar functionality however they have different nonfunctional properties (e.g. price). A lot of research is being made on how to configure, discover, and compose web services on the basis of their non functional characteristics. This paper aims at studying approaches for QoS based configuration of Web Services, analyze the advantages and drawbacks of the various approaches and later we propose an advancement needed in the approach in order to make the QoS aware configuration more effective in the real time environment.

1. QoS for Web Services: Requirements and Possible Approaches: http://www.w3c.or.kr/kr-office/TR/2003/ws-qos
2. L.Z. Zeng, B. Benatallah, A.H.H. Ngu, M. Dumas, J. Kalagnanam and H. Chang, ”QoS-aware middleware for Web services composition”, IEEE Transactions on Software Engineering, Vol. 30, Iss. 5, May 2004, pp. 311-327.
3. S. Ran, ”A Model for Web Services Discovery with QoS”, SIGecom Exchanges, vol. 4, no. 1, pp. 110, Mar. 2003.
4. E. Wohlstadter, S. Tai, T. Mikalsen, I. Rouvellou, and P. Devanbu, ”GlueQoS: Middleware to sweeten quality-of-service policy interactions”, in Proc. 26th Int. Conf. Softw. Eng., Edinburgh, U.K., May 2004, pp. 189-199.
5. P. C. Xiong, Y. S. Fan, and M. C. Zhou,”QoS-aware Web service configuration”, IEEE Trans. Syst., Man, Cybern. A, Syst., Humans, vol. 38, no. 4, pp. 888-895, Jul. 2008.
6. Zibin Zheng; Hao Ma; Lyu, M.R.; King, I,”QoS-Aware Web Service Recommendation by Collaborative Filtering”,IEEE Transactions on Services Computing, Vol 4. Issue 2, pp 140-152Feb 2011.
7. Chen Zhou; Liang-Tien Chia; Bu-Sung Lee,”Semantics in service discovery and QoS measurement”,IT Professional, Vol 7. Issue 2, pp 29 - 34, Mar-Apr 2005.
8. Yang Huaizhou, Li Zengzhi,”Improving QoS of Web Service Composition by Dynamic Configuration”,Information Technology Journal, Vol.9 Issue.3, pp.422, 2010.
9. G. Zheng, A. Bouguettaya,”Service mining on the web”,IEEE Transactions on Services Computing, Vol 2, Issue 1, Jan-Mar 2009.
10. P. C. Xiong, Y. S. Fan, and M. C. Zhou,”Web Service Configuration Under Multiple Quality-of-Service Attributes”,IEEE Transactions on Automation Science and Engineering, Vol. 6 Issue 2, Apr 2009.
11. W. Tan, Y. Fan, M. Zhou, and Z. Tian,”Data-Driven Service Composition in Enterprise SOA Solutions: A Petri Net Approach”,IEEE Transactions on Automation Science and engineering, Vol. 7, No. 3, Jul 2010
12. D. Bruneo, S. Distefano, F. Longo, M. Scarpa,”QoS Assessment of WS-BPEL Processes through non-Markovian Stochastic Petri Nets”, IEEE, 2010
13. X. Li, Y. Fan, Q. Z. Sheng, Z. Maamar, and H. Zhu,”A Petri Net Approach to Analyzing Behavioral Compatibility and Similarity of Web Services”,IEEE Transactions on Systems, Man, and Cybernetics-Part A: Systems and Humans, Vol. 41 Issue 3, May 2011
14. Yu, Tao and Zhang, Yue and Lin, Kwei-Jay,”Efficient Algorithms for Web Services Selection with End-to-End QoS Constraints”,ACM Trans. Web 1 1, Article 6, May 2007.
15. Fauvet, Marie-Christine and Dumas, Marlon and Benatallah, Boualem,”Collecting and Querying Distributed Traces of Composite Service Executions”, Confederated International Conferences DOA, CoopIS and ODBASE 2002, Robert Meersman and Zahir Tari (Eds.). Springer-Verlag, London, UK, UK, 373-390.
16. Norbert Bieberstein, Sanjay Bose, Marc Fiammante, Keith Jones, Rawn Shah,”Service-Oriented Architecture Compass: Business Value, Planning, and Enterprise Roadmap”,IBM Press Publication, 2005.

Quality of Service Service selection Web Services