Research Of Semantic And P2P-based Resource Retrieval System

P2P network is a research focus in recent years. The vast challenge in the fields of P2P is how to carry out the searching service in a highly effective way under the complicated condition of widely distributing users, enormous quantities and node behaviors being out of control.The current P2P resource retrieval systems only support simple keywords query and have some defects that the results of accuracy is not high for some vague query and keywords search and that the semantic integration of relevant resources is very difficult because the resources are lack of general semantic describing.Combining P2P with Semantic Web and making the computer's learning resources of suzhou university sharing as the starting point, this thesis designs a Semantic and P2P-based resource retrieval system SPRRS. The system realizes computer's learning resources sharing and semantic search function and makes our teachers and students more accurately achieve learning resources.The major contributions of the thesis are as follows:(1) The framework and detailed function module of SPRRS system is designed. SPRRS system is divided into the the two main parts which are ontology reasoning server and peer side.The two parts can finish all functions of SPRRS.(2) W3C standard OWL is choosed as the Ontology description language, the thesis creates two ontology files that are used to describe the classification of computer science and technology subjects and each peer side resources.(3) Based on the Ontology library that has been constructed and adopting JXTA as SPRRS development platform, RDF/RDFS is as resources markup languagethe to realize semantic labeling each peer side, and Jena is used to realize ontology reasoning and information query in this system.