my_dataset.py

def _info(self):
    return datasets.DatasetInfo(
        description=_DESCRIPTION,
        features=datasets.Features(
            {
                # "id": datasets.Value("string"),
                # "title": datasets.Value("string"),
                # "context": datasets.Value("string"),
                # "question": datasets.Value("string"),
                "train": datasets.features.Sequence(
                    {"image_path": datasets.Value("string"), "caption": datasets.Value("string"),}
                ),
            }
        ),
        # No default supervised_keys (as we have to pass both question
        # and context as input).
        supervised_keys=None,
        homepage="https://huggingface.co/datasets/brathief/Alice_2/",
        citation=_CITATION,
    )