task_categories:text-generation task_categories:image-to-text task_categories:object-detection language:vi license:cc-by-nc-sa-4.0 size_categories:100K<n<1M format:parquet modality:document modality:image modality:text library:datasets library:dask library:polars library:mlcroissant region:us mathematics vietnamese education pdf-parsing ocr document-understanding