class_docstr: Binary confusion matrix class
docstr: same as PPV
docstr_tok: ["same","as","PPV"]
code: def precision(self):
      """
      same as PPV
      """
      return self.PPV
  
imports: from __future__ import absolute_import, division, print_function, unicode_literals
  import math
  import numpy
  import pandas
  import collections
  from pandas_ml.confusion_matrix.abstract import ConfusionMatrixAbstract
label_desc: Use image node_id 28 for calling the BinaryConfusionMatrix obj's underlying member method code with example usage: obj.precision() and returns: self