title: Sparse Vector vs Dense Vector
body: <p>How to create <code>SparseVector</code> and dense Vector representations</p>
  
  <p>if the <code>DenseVector</code> is:</p>
  
  <pre class="lang-py prettyprint-override"><code>denseV = np.array([0., 3., 0., 4.])
  </code></pre>
  
  <p>What will be the Sparse Vector representation ? </p>