title: Scipy Handling of Large COO matrix
body: <p>I have a large sparse matrix in the form of a scipy <code>coo_matrix</code> (size of 5GB). I have to make use of the non-zero entries of the matrix and do some further processing.</p>
  
  <p>What would be the best way to access the elements of the matrix? Should I convert the matrix to other formats or use it as it is? Also, could you please tell me the exact syntax for accessing an element of a <code>coo_matrix</code>? I got a bit confused since it doesn't allow slicing.</p>