This paper describes the design and implementation of Bibster, a Peer-to-Peer system for exchanging bibliographic data among researchers. Bibster exploits ontologies in data-storage, query formulation, query-routing and answer presentation: When bibliographic entries are made available for use...

Expert-driven business process management is an establishedmeans for improving efficiency of organizational knowledge work.Implicit procedural knowledge in the organization is made explicit bydening processes. This approach is not applicable to individual knowledgework due to its high complexity...

Eye-trackers have been used in the past to identify visual foci inimages, nd task-related image regions, or localize aective regions inimages. However, they have not been used for identifying specic ob-jects in images. In this paper, we investigate whether it is possibleto assign image regions...

We present the user-centered, iterative design of Mobile Facets, a mo-bile application for the faceted search and exploration of a large, multi-dimensional data set of social media on a touchscreen mobile phone. Mo-bile Facets provides retrieval of resources such as places, persons,...

One of the key factors that hinders integration of distributed, heterogeneousinformation systems is the lack of a formal basis for modeling the complex, structuredknowledge that is to be exchanged. To alleviate this situation, we present anapproach based on core ontologies. Core ontologies are...

Ontologies play an important role in knowledge representationfor sharing information and collaboratively developing knowledgebases. They are changed, adapted and reused in different applicationsand domains resulting in multiple versions of an ontology. The comparisonof different versions and the...

Existing tools for generating application programming interfaces(APIs) for ontologies lack sophisticated support for mapping thelogics-based concepts of the ontology to an appropriate object-orientedimplementation of the API. Such a mapping has to overcome the fundamentaldierences between the...

We propose a new approach for mobile visualization andinteraction of temporal information by integrating supportfor time with today's most prevalent visualization of spatialinformation, the map. Our approach allows for an easy andprecise selection of the time that is of interest and...