vector.shape. See the
# numpy vector of a wordexample at https://radimrehurek.com/gensim/models/keyedvectors.html#gensim.models.keyedvectors.KeyedVectors
corpus2dense: it's true NLP produces sparse matrices using the bag-of-words representation. But some later transformations, such as LSI, transform the sparse vectors into a dense space. So using a dense representation actually saves you memory (less overhead than representing a dense matrix using sparse structures).
corpus2dense. Even scikit-learn didn't have sparse support for a while ;)
import gensim.downloader as api
from gensim.models import TfidfModel
from gensim.corpora import Dictionary
dataset = api.load("fake-news")
dct = Dictionary(dataset) # fit dictionary
corpus = [dct.doc2bow(line) for line in dataset] # convert corpus to BoW format
model = TfidfModel(corpus) # fit model
vector = model[corpus] # apply model to the first corpus document
corpus2dense, I had it overflow the memory of a large machine on just 250,000 documents .....
def read_dataset(fpath): with open(fpath, "r") as f: for line in f: # <sentence creation logic> yield sentence model = FastText(min_count=1, size=50, window=5, workers=8, sg=1, word_ngrams=1, min_n=3, max_n=6, iter=5, negative=0) model.build_vocab(read_dataset(args.fpath)) model.train(read_dataset(args.fpath), total_examples=model.corpus_count, epochs=model.iter) model.save("custom_model")