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. 11-28 constructed accordingly; but the foregoing are simple equivalents for the special characters. The natuaal language documents zrnist be on SMART tape ATWO. Bulk lookups from tape can be performed, however, by giving the specification ATWO II (defining ATWO as physical A6). In this case no binary documents can be submitted. Alternatively, ATWO can be defined as 12 (A7) or 13 (A8) in which case binary documents may still be submitted on A6 with a DOCTAP specification. Tape ATWO should not be moved to A[OCRerr], AS, Bl, B2, or B6; these tapes are used in the lookup. [OCRerr].2. Binary Documents The binary documents are submitted on A2 and/or A6 following the English documents. If there are any binary documents on A2, they must be preceded with a card containing [OCRerr]NLY in cols 1-5 and a blank in column 6. As in the case of English documents, the pure requests are submitted first, followed by requests which are also texts, and finally concluding with the pure texts. The documents are preceded by *FIND, *LIKE, and *T[OCRerr]XT cards exactly as in part [OCRerr].l. The *oNLY card suffices to distinguish them from English documents. The binary cards which make up each document contain the identification punched at the beginning of the text, and the concept vectors obtained at lookup time. These documents are punched by the PUNCH specification, after the lookup. Thus, when binary documents only are being submitted, the library tape need not be mounted unless hierarchical expansion is required. The binary documents may be used with any title or phrase weighting (if STATPR was in effect at lookup time), and with any expansion options. If it is desired to change the