ISR11 S0CCER - A Concordance Program chapter Guy E. Hochgesang Harvard University Gerard Salton Use, reproduction, or publication, in whole or in part, is permitted for any purpose of the United States Government. III- 18 a[OCRerr]signment of a character to one of these sets, and does not wish to use the ALPH or SPEC control cards for each run of [OCRerr]CCER, these tables may be changed. Such changes are made by changing the transfer address for the appropriate character. B. Timing The time taken by S[OCRerr]CCER to process a text is dependent on the length of the text, the number of tokens included in the concordance, the tape assignments, and the order of the merge for the tape sort. In general it is faster to have the input tape on channel A and to use the highest possible merge order for the sort. If one considers the merge order to be constant, then the processing cime is roughly linearly dependent on the number of tokens in the text. Most of the runs of S[OCRerr]CCER to date have used a merge of order four and a restriction list which excluded between [OCRerr]O and [OCRerr]O per cent of the tokens from the con- cordance. Under these circumstances a text of 33,O[OCRerr]2 tokens (4318 cards) took 12.7 minutes of execution time, producing 597 pages of output. A text containing 113,130 tokens (13,356 cards) produced 1770 pages of output in 36.9 minutes of execution time, listing 7925 types containing a total of 58,190 tokens. The remaining 5[OCRerr],9h0 tokens were included on the restriction list.