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()


        Args:
            num_classes: number of classes.
            target_class: target class we focus on, used to print info and do early stopping.
        
examples/pytorch/evolveGCN/utils.py