def METHOD_NAME(self, annotations, predictions):
    annotations = [item.value for item in annotations]
    predictions = [item.value for item in predictions]
    real = [item for item in annotations if item.size == self.length]
    real = np.stack(real)
    generated = [item for item in predictions if item.size == self.length]
    generated = np.stack(generated)
    return self.score_calc(real, generated)