Method validation_step

tasks/base_task.py:168–175

:param sample: :param batch_idx: :return: output: dict

(self, sample, batch_idx)

              f"\n==============\n")

    def validation_step(self, sample, batch_idx):
        """

        :param sample:
        :param batch_idx:
        :return: output: dict
        """
        raise NotImplementedError

    def _validation_end(self, outputs):
        """