docstr: Args:
      num_classes: number of classes.
      target_class: target class we focus on, used to print info and do early stopping.
docstr_tok: ["Args",":","num_classes",":","number","of","classes",".","target_class",":","target","class","we","focus","on",",","used","to","print","info","and","do","early","stopping","."]
code: def __init__(self, num_classes, target_class):
      """
  
      Args:
          num_classes: number of classes.
          target_class: target class we focus on, used to print info and do early stopping.
      """
      self.num_classes = num_classes
      self.target_class = target_class
      self.true_positives = {}
      self.false_positives = {}
      self.false_negatives = {}
      self.target_best_f1 = 0.0
      self.target_best_f1_epoch = 0
      self.reset_info()
  
file_path: dgl/examples/pytorch/evolveGCN/utils.py
label_desc: Use image node_id 1 to create a new Measure object from inherited base classes: object with example: obj = Measure(num_classes, target_class)