docstr: This function returns the jaccard coefficient (defined as
  intersection over union)
  
  :return: jaccard coefficient
docstr_tok: ["This","function","returns","the","jaccard","coefficient","(","defined","as","intersection","over","union",")",":","return",":","jaccard","coefficient"]
code: def jaccard(self):
      """
      This function returns the jaccard coefficient (defined as
      intersection over union)
  
      :return: jaccard coefficient
      """
      return self.intersection_over_union()
  
imports: from __future__ import absolute_import, print_function
  import numpy
  from scipy import ndimage
  from niftynet.utilities.util_common import MorphologyOps, CacheFunctionOutput
label_desc: Use image node_id 27 for calling the PairwiseMeasures obj's underlying member method code with example usage: obj.jaccard() and returns: self