Content-sensitive User Interfaces for Annotated Web Pages

By means of RDFa it is possible to embed semantic meaning into standard XHTML web pages. Using the meaning, we provide content-sensitive user interfaces for web pages integrating the embedded annotations with information from other accessible data sources. To illustrate this concept, we show an example where appointment data gets related to the entries of the user’s personal calendar. For the implementation of our approach we propose an extension to the XML document object model that provides access to the annotations by SPARQL and we introduce new use cases for RDFa that use our approach.