Content-based information searching on the Internet. Part 2.

Abstract

The search services on the Internet far surpass the possibilities offered by remote online services both in their flexibitity, user-friendly interfaces and in the information offered. AH of this is a challenge to information retrieval and classification, which are looking ahead to their most significant development in their history with the appearance of the Internet. Ever since the beginning, search services are characterised by the same duality as all of the traditional content-based searching and ordering systems: robot generated WWW indices (indexing services, "search engines") based on natural languages and sometimes using standardised vocabularies (thesauri) aswell as Internet catalogues (browsing services) employing hierarchical classification systems have all been developed. Attempt is made to synchronise their freshly formed terminology with that of documentation and library Sciences. In the second part the author deals with the Internet catalogues, and he briefly considers the formats of the primary and secondary (metadata) electronic documents.