Semantic Data Integration Framework in Peer-to-Peer based Digital Libraries

Abstract: This paper presents our approaches in integrating heterogeneous metadata records in Peer-to-Peer (P2P) based digital libraries (DL). In this paper, the advantages of adapting P2P network over other approaches are to be presented in searching information among moderate-sized digital libraries. Before we present the semantic integration solution, we describe the P2P architecture built in JXTA protocol. By adopting JXTA protocol, peers can automatically discover the other candidates which can provide most appropriate answers. Such feature is realized by the advertising functionality which is introduced in the query process in the paper. As to the metadata integration, since resources may adopt distinct metadata, standardized or non-standardized, we employ the most widely adopted Dublin Core [17] as the globally shared metadata to sponsor the interoperation. This paper also describes the mechanism of applying inference rules to convert heterogeneous metadata to local repository