models/tfidfmodel.py variablename idfs should be dfs

[Dieterbe]

src/gensim/models/tfidfmodel.py

in the initialize method:
idfs = {}
(...)
for termId, termCount in bow:
idfs[termId] = idfs.get(termId, 0) + 1

shouldn't this variable called "dfs" or something? because they are just document frequencies which are not yet inversed.

[piskvorky]

you're right, i'll rename it :)