Using Context2Vec

Use Word2Vec on lists and sets

Use like:

from sphere.models.context2vec import ContextCorpus
from gensim.models import Word2Vec

# If user 1 bought items 0, 1, 2, 3 and user 2
# bought 3, 4, 5 and user bought item 10
contexts = {1:{0, 1, 2, 3}, 2:{2, 3, 4, 5}, 3:{10}}
cc = ContextCorpus(contexts)

# Run the w2v model
model = Word2Vec(cc, size=30, iter=100, min_count=1, alpha=0.025, sg=0)

# Find the most similar user to user 1
results = model.most_similar('C1', topn=100)
related_users = filter(lambda x: x[0].startswith('C'), results)

# Find all user vectors
users = filter(lambda x: x.startswith('C'), model.index2word)
user_vectors = [model.syn0[w2v.vocab[w].index] for w in users]

Running tests

Simply run

nosetests

Or to debug:

nosetests --pdb