code: def load_realsim():
      data_home = get_data_home()
      train_file = os.path.join(data_home, "realsim")
      return _load(train_file, None, "realsim")
  
imports: import os
  import numpy
  import scipy.sparse
  from sklearn.datasets.base import get_data_home
  from sklearn.utils import check_random_state
label_desc: Use image node_id 15 for calling a global function with example usage: load_realsim() and returns: _load