Table of Contents  
Index  
Glossary  


Table of Contents  
Index  
Glossary  
We do not include in the modular model a detailed characterisation space for the domainoriented characterisation. The development of a suitable characterisation of information by its subject is the key issue in the field of Information Retrieval.^{4.16} With respect to the geometry of a domainoriented characterisation space, in the area of Information Retrieval, `concept maps' are developed with a geometry and a sensible notion of distance [Salton, 1983]. Therefore, we assume that there will be a suitable domainoriented typology available to characterise the scientific content of the information. (As an illustration, some of the terms we used are given in table 4.1.)