code: def test_digits_cosine_approximate_sparse():
      pass
  
imports: import scipy
  import numpy
  from apricot import SumRedundancySelection
  from apricot.optimizers import *
  from sklearn.datasets import load_digits
  from sklearn.metrics import pairwise_distances
  from numpy.testing import assert_almost_equal
  from numpy.testing import assert_array_equal
  from numpy.testing import assert_array_almost_equal
label_desc: Use image node_id 53 for calling a global function with example usage: test_digits_cosine_approximate_sparse() without return types