{"artifacts":[{"compression":"none","distribution":"upstream-only","downloads":[{"kind":"upstream","url":"https://www.csie.ntu.edu.tw/~cjlin/libsvmtools/datasets/binary/mushrooms"}],"format":"libsvm","name":"data","sha256":"f39a4eb628dc61a7d43760815b061c9e497aa728ce1ad8bde57a09ef6043b538","size":879712}],"description":"Binary classification data for edible and poisonous mushrooms from the UCI Mushroom dataset, distributed by LIBSVM as 112 binary features for 8124 observations. The provider supplies one artifact without a predefined split. Response labels are 1 (poisonous) and 2 (edible).","license":{"evidence":"UCI licenses the original Mushroom dataset under CC BY 4.0: https://archive.ics.uci.edu/dataset/73/mushroom. LIBSVM identifies UCI as the source and documents feature encoding and exclusion but states no license terms for its transformed artifact: https://www.csie.ntu.edu.tw/~cjlin/libsvmtools/datasets/binary.html#mushrooms. The applicability of the original license to this distributed artifact has not been established.","status":"unknown"},"modality":"tabular","name":"mushrooms","preprocessing":{"datamonger":{"evidence":["spec/decoders/libsvm-v1.md"],"notes":"Datamonger decodes the provider artifact without additional statistical preprocessing.","status":"none"},"upstream":{"evidence":["https://www.csie.ntu.edu.tw/~cjlin/libsvmtools/datasets/binary.html#mushrooms","https://archive.ics.uci.edu/dataset/73/mushroom"],"notes":"The provider does not document the complete category-to-index mapping.","status":"documented","steps":[{"description":"Omit the original stalk-root attribute, described by LIBSVM as attribute 12 including the class column, because it contains missing values.","kind":"feature-exclusion"},{"description":"Expand each retained nominal attribute into binary indicators, producing 112 features.","kind":"feature-encoding"}]}},"provenance":{"citations":[{"citation":"Mushroom [Dataset]. (1981). UCI Machine Learning Repository. https://doi.org/10.24432/C5959T.","note":"Original dataset citation supplied by UCI. The agaricus-lepiota.names file in https://archive.ics.uci.edu/static/public/73/mushroom.zip identifies Jeff Schlimmer as the donor and the 1981 Audubon Society field guide as the source.","role":"dataset"}],"landing_page":"https://www.csie.ntu.edu.tw/~cjlin/libsvmtools/datasets/binary.html#mushrooms","provider":"LIBSVM","retrieved_at":"2026-10-26","upstream_name":"mushrooms"},"representation":{"decoder":"libsvm","decoder_version":1,"expect":{"components":[{"columns":112,"kind":"sparse_matrix","name":"features","rows":8124,"type":"float64"},{"kind":"vector","length":8124,"name":"response","type":"int64"}],"verification":[{"algorithm":"sha256","canonical_form":1,"digest":"4cda92c0e91e1a63c752890cbb89b466e2a41bf4b006c2be660c47480cf71682"}]},"inputs":{"data":"data"},"options":{"duplicate_features":"error","feature_count":112,"index_base":1,"label_type":"int64","row_order":"source","target_name":"response"}},"schema_version":5,"source":"libsvm","tasks":[{"features":"features","name":"default","target":"response","type":"classification"}],"title":"Mushrooms","version":"1"}