The paper aims to discuss strengths and weaknesses of using Object Role Modeling (ORM) and UML Class Diagrams for conceptual modeling of Topic Maps. Established evaluation criteria for conceptual modeling languages are used to compare Topic Map ontology modeling with ORM and UML, to try to find if ORM is a good alternative to UML. The paper discusses a few extensions to simplify viewing ORM dia...

Digital map systems can be categorized, based on the support they provide, into map navigation systems and map touring systems. Map navigation systems put more focus on helping travelers finding routes or directions instantly. By contrast, map touring systems such as Google Maps running on desktop computers are built to support users in developing their routes and survey knowledge before they g...

This paper discusses semantic technologies for multi-perspective issues of ontologies based on ontological viewpoint management. We developed two technologies and implement them in environmental and medical domain. The first one is conceptual map generation tool which allows the users to explore an ontology according to their own perspectives and visualizes them in a user-friendly form, i.e. co...

Research in map generalization starts to focus on other types of maps than on topographic maps only. Therefore, new generalization concepts have to be developed, extending on the experiences and research efforts originally made in topographic generalization. This paper presents a new conceptual framework of map generalization with respect to thematic mapping based on an analysis of the literatu...

This paper presents a method for creating interlingual wordto-word or phrase-to-phrase mappings between any two languages using the self-organizing map algorithm. The method can be used as a component in a statistical machine translation system. The conceptual space created by the self-organizing map serves as a kind of interlingual representation. The specific problems of machine translation a...