SDI-5, an advanced system for selective dissemination of information

Continued experimentation and operational experience have been incorporated into the programming of a new IBM 1401-7090 Data Processing System for Selective Dissemination of Information (SDI) now serving over 1200 scientific, technical and administrative personnel. The most significant new features are: Machine printing of all bibliographic information including abstracts and matching index terms. Control by the user of the type and quantity of information he receives. Segmentation of user's interest profiles into distinct interest areas. Weighting of user index terms. Extensive analysis routines to monitor user and system performance. Several procedures for automatically updating user interest profiles. Machine-controlled vocabulary guide for both user and document profiles.