We review the use on ontologies for the integration of heterogeneous information sources.
Based on an in-depth evaluation of existing approaches to this problem we discuss how …

Travel and tourism comprise the leading application field in business-to-consumer (B2C) e-
commerce, representing approximately half of the total worldwide B2C turnover. Even in the …

Integrating different information sources is a growing research area within different
application domains. This is particularly true for the geographic information domain which is …

The Semantic Web o? ers new options for information processes. Dr. Visser is dealing with
twocore issuesin this area: the integrationofdata onthe sem-tic level and the problem of …

Interoperability is a crucial problem for geographic information systems. The transfer of data
and models between different systems requires the ability to set up a correspondence …

We present a new approach, which proposes to minimize the numerous problems existing in
order to have fully interoperable GIS. We discuss the existence of these heterogeneity …

Mediator specification and terminology development are two labor-intensive tasks that are
serious obstacles to the widespread use of mediator-based systems. In this paper, we …

Environmental information systems have gained more importance both in the public
administration and industry since the beginning of 1990. For example, in public …

Mediators are middleware components that provide a flexible integration of several
heterogeneous information systems. But current approaches ignore that each information …

This paper discusses the use of contextual reasoning, ie context transformation for achieving
semantic interoperability in heterogeneous information systems. We introduce …