Matrix multiplication after tf.idf weighting with constant factor(s=2.5)?
[...from my previous post...]
Stanislaw Osinski wrote
> If it's 3, then where is the effect of constant factor (s=2.5), because we
> just count values which are not 0?
> So where is the effect of constant factor(s = 2.5)?
There is no effect on the idf (as it depends on document counts and not term
occurrences), the effect is only on tf -- you count each occurrence of a
word in document's title as 2.5 (or whatever value for s you assume).
So is it like this?
Let assume this condition: term1 in document 3 and document 7 appears in document title, so it will be multiplied by constant factor s=2.5, the matrix is like below: