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Copy pathtest3.py
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27 lines (19 loc) · 837 Bytes
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from gensim.models.word2vec import Word2Vec
from sklearn.manifold import TSNE
from sklearn.datasets import fetch_20newsgroups
import re
import matplotlib.pyplot as plt
# download example data ( may take a while)
train = fetch_20newsgroups()
def clean(text):
"""Remove posting header, split by sentences and words, keep only letters"""
lines = re.split('[?!.:]\s', re.sub('^.*Lines: \d+', '', re.sub('\n', ' ', text)))
return [re.sub('[^a-zA-Z]', ' ', line).lower().split() for line in lines]
sentences = [line for text in train.data for line in clean(text)]
model = Word2Vec(sentences, workers=4, size=100, min_count=50, window=10, sample=1e-3)
print (model.most_similar('memory'))
X = model[model.wv.vocab]
tsne = TSNE(n_components=2)
X_tsne = tsne.fit_transform(X)
plt.scatter(X_tsne[:, 0], X_tsne[:, 1])
plt.show()