SparseMatrixSparseMatMul

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from tensorflow.python.ops.linalg.sparse import sparse_csr_matrix_ops
 
     a_indices = np.array([[0, 0], [2, 3], [2, 4], [3, 0]])
     a_values = np.array([1.0, 5.0, -1.0, -2.0], np.float32)
     a_dense_shape = [4, 5]
 
     b_indices = np.array([[0, 0], [3, 0], [3, 1]])
     b_values = np.array([2.0, 7.0, 8.0], np.float32)
     b_dense_shape = [5, 3]
 
     with tf.Session() as sess:
       # Define (COO format) Sparse Tensors over Numpy arrays
       a_st = tf.sparse.SparseTensor(a_indices, a_values, a_dense_shape)
       b_st = tf.sparse.SparseTensor(b_indices, b_values, b_dense_shape)
 
       # Convert SparseTensors to CSR SparseMatrix
       a_sm = sparse_csr_matrix_ops.sparse_tensor_to_csr_sparse_matrix(
           a_st.indices, a_st.values, a_st.dense_shape)
       b_sm = sparse_csr_matrix_ops.sparse_tensor_to_csr_sparse_matrix(
           b_st.indices, b_st.values, b_st.dense_shape)
 
       # Compute the CSR SparseMatrix matrix multiplication
       c_sm = sparse_csr_matrix_ops.sparse_matrix_sparse_mat_mul(
           a=a_sm, b=b_sm, type=tf.float32)
 
       # Convert the CSR SparseMatrix product to a dense Tensor
       c_sm_dense = sparse_csr_matrix_ops.csr_sparse_matrix_to_dense(
           c_sm, tf.float32)
       # Evaluate the dense Tensor value
       c_sm_dense_value = sess.run(c_sm_dense)
 

[[  2.   0.   0.]
      [  0.   0.   0.]
      [ 35.  40.   0.]
      [ -4.   0.   0.]]