code: def false_negatives(self, idx):
      return self.sum_conditions[idx] - self.true_positives(idx)
  
imports: import logging
  from collections import OrderedDict
  import numpy
  from sklearn import metrics
  from sklearn.metrics import confusion_matrix
label_desc: Use image node_id 6 for calling the ConfusionMatrix obj's underlying member method code with example usage: obj.false_negatives(idx) and returns: unknown