def evaluate()

in bison_eval.py [0:0]


    def evaluate(self):
        accuracy = []
        for bison_id in self.params['bison_ids']:
            accuracy.append(self.anno[bison_id]['true_image_id'] ==
                            self.pred[bison_id])
        mean_accuracy = np.mean(accuracy)
        print("[Result] Mean BISON accuracy on {}: {:.2f}%".format(
            self.anno.dataset, mean_accuracy * 100)
        )
        return mean_accuracy