Extending MS Office for Sharing Document Content Units over the Semantic Web

In this paper, we present an extension to MS Office that enables users to search and retrieve document content units (e.g., paragraphs, images, tables, slides, etc.) from documents, which are stored on userpsilas individual desktops organized in a peer-to-peer fashion. We first introduce the semantic document model (SDM) that turns MS Office documents (i.e., MS Word and MS PowerPoint) into semantic Web resources, making document content to be accessible and query-able as RDF data. Then we describe the developed tools, which extend Office applications with support for ontology-based, distributed search of semantic documents stored in local RDF repositories over se-mantic Web protocols.