For many information domains there are numerous World Wide Web data sources. The sources vary both in their extension and their intension: They represent different real-world entities with possible overlap and provide ...

Model driven engineering is a popular attempt to deal with the complexity of modern software systems. For the telecommunication sector a model driven approach means that you have to handle half a dozen ITU-T modelling ...

Models can be used in many stages of many different processes, but in software engineering, the ultimate purpose of modelling is often code generation. While code can be generated from any model, we propose to use an ...

Compiler builders have for a long time used tools that automate the frontend process of scanning and parsing the input. However, tools to handle the result of the parse are rarely found. Kimwitu++, the term processor, is ...

Im außertropischen Südamerika haben nach der Zerstörung der natürlichen Vegetation durch die europäischen Siedler und ihre nicht nachhaltige Landnutzung irreversible Prozesse der Bodenerosion eingesetzt. Im mittelchilenischen ...

2002 ist das Jahr der Geowissenschaften und allenthalben feiern sich Fachdisziplinen als Schwerpunktbereich geowissenschaftlicher Forschung. Aber welche Fächer gehören eigentlich zu den Geowissenschaften? Die Spannweite ...

Most data integration applications require a matching between the schemas of the respective data sets. We show how the existence of duplicates within these data sets can be exploited to automatically identify matching ...

Duplicate detection is the problem of detecting different entries in a data source representing the same real-world entity. While research abounds in the realm of duplicate detection in relational data, there is yet little ...

Peer data management systems (PDMS) are the natural extension of integrated information systems. Conventionally, a single integrating system manages an integrated schema, distributes queries to appropriate sources, and ...