Research and implementation on searching mechanism based on interest mining in unstructured P2P systems

In the environment of unstructured P2P, routing scheme is one of the key factors affecting information retrieval. A routing scheme based on interest indexical table was proposed in this paper. Moreover, on the basis of it, a P2P full text information retrieval prototype system Isearch was implemented. Firstly, local file content of a peer was represented with vector space model. After that, vector space was clustered to obtain interest class of this peer. And then, interest similar degree was computed among peers to build interest indexical table locally. When searching, query requests were forwarded to the peers with similar interest directly according to the interest indexical table. Experimental results show that ISearch can not only make good retrieval results, but also reduce the number of query peers and make retrieval more efficient.