For example, there is no standard way to link a photo to an  address-book entry of a depicted person. The filesystem simply does not  know the concept of persons or photos and that they could be linked.  Rather, the problem of categorizing and keeping things and later  searching for them is solved by each application differently.

This talk is about a radical application of Semantic Web Standards to  Personal Computers resulting in the Semantic Desktop. This vision was  initiated by Leo Sauermann in 2003 and nurtured in workshops and  research projects. It enables users to build and maintain a network of  semantic links between things, cross-application and cross-media.  Existing data sources are converted into the Resource Description  Framework (RDF) and what today is known as a file or an email is  tomorrow a resource in an ontology. In the talk, several projects  working towards the Semantic Desktop vision are presented. The  integrated NEPOMUK project provides a standardized architecture which is  implemented in several sub-projects: Aperture, KDE 4.0 (Xesam, Strigi),  PSEW, Beagle++, gnowsis. DBIN, Haystack, OpenIris and Idealiance are  alternative approaches. Most of the technology is available as open  source components and can be used as a basis for your own work.

·        Why is Semantic Web needed on the desktop?

·        How does data fusion work on the desktop?

·        What is a personal information model?

·        How do existing user interfaces and user experience change?

·        Which projects are active and what are their results?