title: Getting memory error on training vectors over quora's datasets
body: <p>I am getting the following errors while extracting features of quora's dataset. I am using a 32 bit ubuntu system.</p>
  
  <pre>
  
  404290it [01:25, 4731.71it/s]
  404290it [01:26, 4649.86it/s]
  Traceback (most recent call last):
    File "feature_engineering.py", line 96, in 
      data['cosine_distance'] = [cosine(x, y) for (x, y) in zip(np.nan_to_num(question1_vectors),
    File "/home/karan/.virtualenvs/cv/lib/python3.4/site-packages/numpy/lib/type_check.py", line 385, in nan_to_num
      x = _nx.array(x, subok=True, copy=copy)
  MemoryError
  
  
  </pre>