IRS13 Search Matching Functions chapter E. M. Keen Harvard University Gerard Salton Use, reproduction, or publication, in whole or in part, is permitted for any purpose of the United States Government. 111-22 FIVE MATCHING STRENGTHS VERY STRONG STRONG MEDIUM WEAK VERY WEAK 4) 4) 4) 4) Raxiking [OCRerr] [OCRerr] [OCRerr] [OCRerr] Indliced [OCRerr] Co Co [OCRerr] 4)[OCRerr] [OCRerr] [OCRerr] [OCRerr] [OCRerr] [OCRerr] by Overlap H H H H H [OCRerr] [OCRerr] 4) 4) 4) 4) [OCRerr] H[OCRerr] H H H[OCRerr] [OCRerr] [OCRerr] [OCRerr] [OCRerr] [OCRerr] ( [OCRerr] [OCRerr] [OCRerr] [OCRerr] [OCRerr] [OCRerr] [OCRerr] [OCRerr] 0 0 0 0 0 I I I I [OCRerr] I } Changes t Favoring Cosine ½) $3> HIGH RANK FOSITIONS ¼ } Changes Not Favoring Cosine - [OCRerr] I\;) Low Diagram of changes in rank positions of relevant and non relevant documents, showing which changes favor cosine and which do not, starting with overlape Figure 12.