task_categories:visual-question-answering task_categories:image-text-to-text task_ids:visual-question-answering annotations_creators:expert/gpt-4o-generated multilinguality:monolingual language:en license:mit size_categories:1K<n<10K format:parquet modality:image modality:text library:datasets library:dask library:mlcroissant library:polars arxiv:2508.06492 region:us Chart VQA Benchmark Chart Understanding Chart Synthetic Data