Document Finding (Non-conventional Methods in Document Retrieva1. 6)

Describes the method used in the selection of entries from the Catalogue-on-Tape in response to a query on a subject. After a precise formulation of the query, its subject is facet-analysed, and translated into a Class Number on the basis of a depth version of the Colon Classification. The computer compares, each of the digits in the Class Number for the query with each of the digits in the Class Number in each of the entries in the Catalogue-on-Tape, and selects those entries in whose Class Number a matching of the component digits with those in the Class Number for the query, is established. Mentions the provision made for print-out of the entries selected in a short as well as long format, for punching them on cards, and for transferring them on to another magnetic tape. Gives the step-by-step procedure and flow-charts used in the different stages of the work. Gives examples of queries and the print-out of the entries selected in response.