MIWeb: Mediator-based Integration of Web Sources.

MIWeb realizes a mediator-based integration of heterogeneous metadata sources over the Web. Mediators are well known from database integration. They improve the quality of search results by providing a query language, by automatically coupling sources, and by filtering redundant results. The MIWeb system contributes mediator architectures in the context of Web sources, metadata standards for integration by using modern web technologies. MIWeb supports the search for learning materials and related publications. It is based on in-house learning object sources, the search engine Google, and the research index CiteSeer. Technical the integration layer uses technologies like HTTP, RDF and the RDF query language RDQL.