A Web Services Composition Strategy Based on Trust Reasoning and Evolution
Xin Liu · Chinese Journal of Computers · 2012
To overcome the problem of poor quality of service caused by malice,fraud and dishonest service entities in dynamic and complex internet,the paper constructs a trust reasoning and evolution system.It is mainly composed of the public and entity trust evolution systems and based on the Open Grid Services Architecture(OGSA).This paper proposes a trust reasoning method to change the situation of trust missing and trust generalization,which constrained by the trusty entities,the entity set,successive approximation of evaluation entities,etc.The trust reasoning system could greatly enrich trust relationship among entities and distinguish conspiracy through deduction,inversion and recursion.It is capable of overcoming the problem aroused by the lack of direct trust and early stage trust in the traditional trust evolution.Therefore,it changes traditional methodology on trust relationship modeling.Based on the new trust reasoning and evolution method,we propose a Web service composition strategy.The practical example and testing results demonstrate the effectiveness of the new strategy on distinguishing potential risk in entity behavior,overcoming the problem of entity experience differences,and improving the success rate of services composition.