Accession Number : AD0755752

Title :   Implementation of an Automatic, A Posteriori, Hierarchical Classification System.

Descriptive Note : Technical rept.,

Corporate Author : MOORE SCHOOL OF ELECTRICAL ENGINEERING PHILADELPHIA PA

Personal Author(s) : Lang,Allen L. ; Zagorsky,Susan W.

Report Date : JAN 1973

Pagination or Media Count : 296

Abstract : The paper describes a total system which provides the capability to semi-automatically index and classify any given file of information. The semi-automatic indexing method assigns key terms to each 'document' in the file. These key terms may be modified, (i.e., added, deleted, or changed) by the user. The indexed documents are then assigned to categories by an automatic classification algorithm. The classification assignments are a posteriori. Classification dictionaries are also produced which can be used as an aid in browsing through the data base and in retrievals from the data base. Samples are given of the results obtained while indexing and classifying an experimental data base containing the texts of 1669 radio messages. (Author)

Descriptors :   (*CLASSIFICATION, AUTOMATION), (*SUBJECT INDEXING, AUTOMATION), DICTIONARIES, DATA PROCESSING, COMPUTER PROGRAMMING

Subject Categories : Information Science
      Computer Programming and Software

Distribution Statement : APPROVED FOR PUBLIC RELEASE