IRS13
Scientific Report No. IRS-13 Information Storage and Retrieval
Correlation Measures
chapter
K. Reitsma
J. Sagalyn
Harvard University
Gerard Salton
Use, reproduction, or publication, in whole or in part, is permitted for any purpose of the United States Government.
PRECISION Cosine
Stiles
0.60- *A[OCRerr]A Overlap
000 PRN
0.50
0.40
0.30-
0.20-
0.10-
I I . I I I I I I I I i I [OCRerr]
0.20 0.40 Q60 0.80 1.00
The performance of the four best correlation
functions with the CRANFIELD collection.
Fig. 2