Chord-Based Semantic Service Discovery with QoS

Large quantities of services emerging in the internet have put forward higher requirement to service discovery, as a result, the service discovery mechanism based on keywords and simplified classification of UDDI can no longer work well. Service description language, metadata storage and service matching algorithm are three critical factors influencing the efficiency and quality of service discovery. This paper presents a prototype system of Chord-based semantic service discovery with QoS(Quality of Service). It puts QoS into OWL-S(Web ontology language for services) to describe services, and adopts Chord-based distributed storage. OWL-QoS based matching algorithm is also used to discover services. Experiment results show that the approach presented in this paper can improve the efficiency and accuracy of service discovery commendably.