calculate dice scores

scores.py

'''calculates dice scores when Scores class for it'''
def dice_score(pred, targs):
    pred = (pred>0).float()
    return 2. * (pred*targs).sum() / (pred+targs).sum()

''' initialize a empty list when Scores is called, append the list with dice scores
for every batch, at the end of epoch calculates mean of the dice scores'''
class Scores:
    def __init__(self, phase, epoch):
        self.base_dice_scores = []

    def update(self, targets, outputs):
        probs = outputs
        dice= dice_score(probs, targets)
        self.base_dice_scores.append(dice)

    def get_metrics(self):
        dice = np.mean(self.base_dice_scores)         
        return dice

'''return dice score for epoch when called'''
def epoch_log(epoch_loss, measure):
    '''logging the metrics at the end of an epoch'''
    dices= measure.get_metrics()    
    dice= dices                       
    print("Loss: %0.4f |dice: %0.4f" % (epoch_loss, dice))
    return dice

in dice_score() you didnt squre the elements n the denominator. The dice score becomes dimentionally wrong