Yes, here the base doesn't matter as it just multiplies all results by
a constant factor. Math libraries tend to have ln, not log10 or log2.
ln is often the more, er, natural base for several computations. So I
would assume that log = ln in the context of ML.
On Fri, Oct 31, 2014 at 11:31 AM, Andr
ains 1.
>
> In other words, my calculations don't agree with yours, and neither seem
> to agree with Spark :)
>
> Regards,
> Ashic.
>
> --
> Date: Thu, 30 Oct 2014 22:13:49 +
> Subject: how idf is calculated
> From: andr...@sindic
= 0.5 + {(0.5*fij)/maxk fkj}, but that doesn't change anything
for TFa1, as the value remains 1.
In other words, my calculations don't agree with yours, and neither seem to
agree with Spark :)
Regards,Ashic.
Date: Thu, 30 Oct 2014 22:13:49 +0000
Subject: how idf is calculated
From: andr...@
Hi,
I'm writing a paper and I need to calculate tf-idf. Whit your help I
managed to get results, I needed, but the problem is that I need to be able
to explain how each number was gotten. So I tried to understand how idf was
calculated and the numbers i get don't correspond to those I should get .
