ISR11 Operating Instructions for the SMART Text Processing and Document Retrieval System chapter M. E. Lesk Harvard University Gerard Salton Use, reproduction, or publication, in whole or in part, is permitted for any purpose of the United States Government. h-i II. Operating Instructions for the SM[OCRerr]T Text Pro[OCRerr]essing and Document Retrieval System M. E. Lesk 1. Introduction SMART is a fully autanatic programming system designed for the analysis of [OCRerr]glish[OCRerr]text and for the processing of information requests. The S[OCRerr][OCRerr]RT system can also be used to perform ccmplete studies of information retrieval systems, vocabulary and dictionary investigations, and mm:ny other linguistic and classificatory studies. Among the features of the system which are available for purposes of content analysis are: thesaurus look[OCRerr]p, phrase searching methods (including complete syntactic analysis), hierarchical processing, statistical association methods, and title/abstractl text differentiation. Intermediate and final results are available in convenient form for detailed study, or alternatively, a complete retrieval technique may be evaluated automatically. A full description of the methods and programs used may be found in [1); shorter writeups are available in [2) [3), and [[OCRerr]). The system described here supersedes the operating system described a year and a half ago in [5) and [6). The basic differences between new and old systexn.[OCRerr] are a widely expanded system capacity and faster processing speeds. In future years, it is hoped to experiment with time-sharing environments, and additional processing algorithms are being developed. Since the programs have reached a state of semi-stability, however, new operating instructions are being prepared.