UDC USER PROFILES AS DEVELOPED FOR A COMPUTER‐BASED SDI SERVICE IN THE IRON AND STEEL INDUSTRY

Extension of the Selective Dissemination of Information system required the adoption of computer‐based techniques. The indexing language adopted is UDC and it was necessary to construct user profiles based on this classification. Profiles have been compiled for individual clients of the service, for works within the British Steel Corporation, and for broad fields of activity within the iron and steel industry. Use of the service has shown that UDC provides a satisfactory basis for profile compilation. The majority of profiles so far constructed have relevance of over 95%, based on user assessment. Possible future developments in the compilation of the profiles are considered.