Open datasets · Research & Machine Learning Data
UCI Machine Learning Repository
University-maintained collection of datasets for machine learning, data mining, teaching and benchmark experimentation. Published by University of California, Irvine and catalogued under Research & Machine Learning Data, available as csv, arff, txt, dataset-specific. Free to access at the source.
More in Research & Machine Learning Data
Zenodo
Research repository where researchers and organizations publish datasets, software and supplementary materials with persistent identifiers and record-level licences.
Harvard Dataverse
Research-data repository supporting publication, preservation, citation and download of datasets across disciplines.
OpenML
Open platform for publishing and discovering machine-learning datasets, tasks, experiments and benchmark results.
Hugging Face Datasets Hub
Dataset hub for machine learning and AI: NLP, computer vision, audio, tabular, time series, and geospatial data, with a built-in viewer and library integration. Free access.