A P2P-based semantic Web services(P2PSWS)composition system architecture is presented to improve the scalability
reliability and stability of semantic Web service composition systems. The architecture combines the advantages of centralized structure and distributed structure
and distributes the function of UDDI to the local Web node
group Web nodes and public Web nodes. A location mechanism of semantic Web services is designed based on CAN(content-addressable network)P2P networks to ensure that each service is registered in one node of the public Web. The registration services of public Web nodes are divided by areas and shared by all nodes. The running of prototype system shows that the proposed structure helps to overcome the problem “the failure of a single node” on the traditional structures of public Web services and expands the capacity of P2P systems
and achieves an efficient ontology-based semantic Web services composition.
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