code: def __init__(self, label_num, beta, ignore_label):
      self.label_num = label_num
      self.beta = beta
      self.ignore_label = ignore_label
  
file_path: chainer/chainer/functions/evaluation/classification_summary.py
imports: from __future__ import division
  import six
  import chainer
  from chainer import backend
  from chainer import function
  from chainer.utils import type_check
label_desc: Use image node_id 1 to create a new ClassificationSummary object from inherited base classes: function with example: obj = ClassificationSummary(label_num, beta, ignore_label)