title: How to import WordEmbeddingSimilarityIndex function from gensim module?
body: <p>When i try to import WordEmbeddingSimilarityIndex, it's giving me the following error:</p>
  <pre><code>&gt;&gt; from gensim.models import WordEmbeddingSimilarityIndex
  ImportError: cannot import name 'WordEmbeddingSimilarityIndex
  </code></pre>
  <p>The same issue occurs for <code>SparseTermSimilarityMatrix</code> function:</p>
  <pre><code>&gt;&gt; from gensim.similarities import SparseTermSimilarityMatrix
  ImportError: cannot import name 'SparseTermSimilarityMatrix
  </code></pre>
  <p>Note: I have installed and imported gensim, gensim.models and gensim.similarities. But still it's giving me the <code>ImportError</code> while importing the above mentioned functions.</p>
  <p>Can you tell me what I am doing wrong, please?</p>