Word2Vec Problem

[sandip sarkar]

I have install gensim from this link

https://pypi.python.org/pypi/gensim

Corpora and Vectors are working well. But When I am working with word2vec then it gives this type of error 

model = Word2Vec(sentences, size=100, window=5, min_count=5, workers=4)

Traceback (most recent call last):

  File "<stdin>", line 1, in <module>

NameError: name 'Word2Vec' is not defined

But when I am  executing this command 

>>> # import modules and set up logging

>>> from gensim.models import word2vec

>>> import logging

>>> logging.basicConfig(format='%(asctime)s : %(levelname)s : %(message)s', level=logging.INFO)

>>> # load up unzipped corpus from http://mattmahoney.net/dc/text8.zip

>>> sentences = word2vec.Text8Corpus('/tmp/text8')

>>> # train the skip-gram model; default window=5

>>> model = word2vec.Word2Vec(sentences, size=200)

>>> # ... and some hours later... just as advertised...

>>> model.most_similar(positive=['woman', 'king'], negative=['man'], topn=1)

[('queen', 0.5359965)]

then it gives correct ans.

How to resolve NameError: name 'Word2Vec' is not defined Problem

[Gordon Mohr]

Where your code is working, you first...

    from gensim.models import word2vec

...then use that imported name `word2vec` to reach the `Word2Vec` class, as `word2vec.Word2Vec`. (Just using `Word2Vec` wouldn't work – that unqualified name hasn't been imported.) 

In your code that doesn't work, you haven't shown what imports are in effect. You try to name the `Word2Vec` class directly. Was `Word2Vec` ever imported?

- Gordon

[Mona Jalal]

Hi Gordon,

I followed your suggestion but I get this error. Do you know why?

jalal@klein:~/computer_vision/image_retrieval$ python  gensim_test.py

Traceback (most recent call last):

  File "gensim_test.py", line 3, in <module>
    model = word2vec.Word2Vec(sentences)
NameError: name 'sentences' is not defined

[Mona Jalal]

fixed the problem by downloading and extracting the text8

sentences = word2vec.Text8Corpus("/home/jalal/text8")
model = word2vec.Word2Vec(sentences)

Best regards,

Mona Jalal.

University of Wisconsin-Madison CS'16/EE'14 Master's graduate

http://monajalal.com 

https://www.linkedin.com/in/mona-jalal

https://github.com/monajalal/

https://twitter.com/MonaJalal_

http://stackoverflow.com/users/2414957/mona-jalal

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