TF-IDF : IDF logarthmic base value

#1

It is mentioned that IDF has min value of 0 and max value of 1. So the logarthmic formulae of IDF has the base of N. Is my understanding regarding this is correct? Found one example in wikipedia where base 10 logarithm is used.

#2

Hey @tisandas2011, see this pics
1 ![2|604x500]

This is the value of the correct limits for the idf,

2
21280×1136 107 KB

Hope this resolved your doubt.
Plz mark the doubt as resolved in my doubts section. :blush:

#3

Thanks for the explanation.