IRS13
Scientific Report No. IRS-13 Information Storage and Retrieval
An Analysis of the Documentation Requests
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.
x-i6
________ MEAN MEDIAN
Average Total Frequency
(ie[OCRerr]. Sum of Concept 1542 1605
Frequencies) , I
Per Request
Average Concept Frequency 220 220 G
Overall Concepts Per Request I
___ I
Data Showing Two Methods of C[OCRerr]puting the Average Frequency
of Use in the Coliection of Request Concepts, using the Stem Dictionary.
Figure 6.