Enabling the Semantic Web with Ready-to-Use Mash-Up Components

A lot of functionality is needed when an application, such as a museum cataloguing system, is extended with semantic capabilities, for example ontological indexing functionality or multi-facet search. To avoid duplicate work and to enable easy and cost-ecient integration of information systems with the Semantic Web, we propose a mash-up approach. Here, data sources are combined with functionality into ready- to-use software components that allow adding semantic functionality to systems with just a few lines of code. As a proof of the concept, we present a collection of general semantic mash-up components and case applications that use them, such as the ontology server ONKI, the an- notation editor SAHA and the culture portal CultureSampo.