Efficient Web Service Query Approach Based on Concept Relaxation

Cloud computing and service-oriented applications on the Internet are growing rapidly.On the other hand,open platform speed up the emergence of composited services,which is based on Cloud service.How to discover the desired services for users efficiently has become a significant challenge.Although traditional approaches have made progress in recall rate and precision.But they are not suitable for large-scale service discovery under dynamic environment.In this article,a novel approach for service query based on concept relaxation is proposed,which employs the semantic relation of concepts from hierarchical ontology.The unrelated concepts and services are figured out to improve the efficiency of algorithm.The method has been implemented in a prototype of on-demand service platform.The results of experiments illustrate that the proposed approach not only outperform the traditional ones,but also satisfy the scalability of service discovery.