6.14.8.1. scikits.learn.feature_extraction.text.sparse.TfidfTransformer¶

class scikits.learn.feature_extraction.text.sparse.TfidfTransformer(use_tf=True, use_idf=True)¶

fit(X, y=None)¶

Learn the IDF vector (global term weights)

Parameters :

X: sparse matrix, [n_samples, n_features] :

a matrix of term/token counts

transform(X, copy=True)¶

Transform a count matrix to a TF or TF-IDF representation

Parameters :

X: sparse matrix, [n_samples, n_features] :

a matrix of term/token counts

Returns :

vectors: sparse matrix, [n_samples, n_features] :