code: def test_hash_deterministic_sparse(self):
      x = scipy.sparse.rand(100, 1, density=0.1)
      first_hash = self.rbp.hash_vector(x)[0]
      for k in range(100):
          self.assertEqual(first_hash, self.rbp.hash_vector(x)[0])
  
imports: import numpy
  import scipy
  import unittest
  from nearpy.hashes import RandomBinaryProjections, RandomDiscretizedProjections, PCABinaryProjections, PCADiscretizedProjections
label_desc: Use image node_id 5 for calling the TestRandomDiscretizedProjections obj's underlying member method code with example usage: obj.test_hash_deterministic_sparse() without return types