title: Soft Cosine Similarity between two sentences
body: <p>I am trying to find a simple way to calculate soft cosine similarity between two sentences.</p>
  
  <p>Here is my attempt and learning:</p>
  
  <pre><code>from gensim.matutils import softcossim
  
  sent_1 = 'Dravid is a cricket player and a opening batsman'.split()
  sent_2 = 'Leo is a cricket player too He is a batsman,baller and keeper'.split()
  
  print(softcossim(sent_1, sent_2, similarity_matrix))
  </code></pre>
  
  <p>I'm unable to understand about <code>similarity_matrix</code>. Please help me find so, and henceforth the soft cosine similarity in python.</p>