I searched for a mathematical formula for the description of (word) frequency count. Its definition would be:
A word frequency count is a measure of the number of times that a word w occurs in some corpus n.
I was thinking about something like this maybe?
$freq_{word} (w) = \sum w \in n$
What I would mean by this formula is:
the word frequency of w = the sum of (every occurrence of) w being a member of n
I have absolutely no strong mathematical background, but I just started experimenting with using actual formulas as a theoretical support for methodologies (in linguistics). Is this formula worth anything or is it absolute nonsense and am I using it incorrectly?