The Concepts of Semantic Heterogeneity and Ontology of

Abstract

vascoda (www.vascoda.de) is today the most important project to achieving a new innovative infrastructure in the field of scientific information in Germany. The aim is to integrate high-quality information from the deep and from the visible web by using search engine technology (FAST) and new concepts to integrate the data, not only technically, but to solve the problem of semantic heterogeneity at a high level of quality. In contrast to the ontology and semantic web approach that of semantic heterogeneity in the context of the shell model started from the invisible web, opening itself to the visible, not vice versa, and is putting the reuse of existing semantic knowledge (thesauri) in the foreground. The consequences of these differences and the common features of both approaches are in the focus of the paper.