{ "data_id": "43652", "name": "SDSS-16", "exact_name": "SDSS-16", "version": 1, "version_label": "v1.0", "description": "Data is pulled from SDSS Skyserver from data release 16 using the following query.\n\nSELECT\n p.objid,p.ra,p.dec,p.u,p.g,p.r,p.i,p.z, p.run, p.rerun, p.camcol, p.field,\n s.specobjid, s.class, s.z as redshift, s.plate, s.mjd, s.fiberid\nINTO mydb.MyTable_0\nFROM PhotoObj AS p\nJOIN SpecObj AS s ON s.bestobjid = p.objid\nWHERE p.u BETWEEN 0 AND 19.6 AND g BETWEEN 0 AND 20", "format": "arff", "uploader": "Dustin Carrion", "uploader_id": 30123, "visibility": "public", "creator": null, "contributor": null, "date": "2022-03-24 01:01:43", "update_comment": null, "last_update": "2022-03-24 01:01:43", "licence": "CC0: Public Domain", "status": "active", "error_message": null, "url": "https:\/\/www.openml.org\/data\/download\/22102477\/dataset", "kaggle_url": null, "default_target_attribute": null, "row_id_attribute": null, "ignore_attribute": null, "runs": 0, "suggest": { "input": [ "SDSS-16", "Data is pulled from SDSS Skyserver from data release 16 using the following query. SELECT p.objid,p.ra,p.dec,p.u,p.g,p.r,p.i,p.z, p.run, p.rerun, p.camcol, p.field, s.specobjid, s.class, s.z as redshift, s.plate, s.mjd, s.fiberid INTO mydb.MyTable_0 FROM PhotoObj AS p JOIN SpecObj AS s ON s.bestobjid = p.objid WHERE p.u BETWEEN 0 AND 19.6 AND g BETWEEN 0 AND 20 " ], "weight": 5 }, "qualities": { "NumberOfInstances": 732977, "NumberOfFeatures": 18, "NumberOfClasses": null, "NumberOfMissingValues": 0, "NumberOfInstancesWithMissingValues": 0, "NumberOfNumericFeatures": 17, "NumberOfSymbolicFeatures": 0, "PercentageOfBinaryFeatures": 0, "PercentageOfInstancesWithMissingValues": 0, "PercentageOfMissingValues": 0, "AutoCorrelation": null, "PercentageOfNumericFeatures": 94.44444444444444, "Dimensionality": 2.455738720314553e-5, "PercentageOfSymbolicFeatures": 0, "MajorityClassPercentage": null, "MajorityClassSize": null, "MinorityClassPercentage": null, "MinorityClassSize": null, "NumberOfBinaryFeatures": 0 }, "tags": [], "features": [ { "name": "object_id", "index": "0", "type": "numeric", "distinct": "409241", "missing": "0", "min": "2147483647", "max": "2147483647", "mean": "2147483647", "stdev": "2147483647" }, { "name": "right_ascension", "index": "1", "type": "numeric", "distinct": "732952", "missing": "0", "min": "0", "max": "360", "mean": "180", "stdev": "78" }, { "name": "declination", "index": "2", "type": "numeric", "distinct": "732952", "missing": "0", "min": "-20", "max": "85", "mean": "24", "stdev": "20" }, { "name": "u_magnitude", "index": "3", "type": "numeric", "distinct": "247749", "missing": "0", "min": "7", "max": "20", "mean": "19", "stdev": "1" }, { "name": "g_magnitude", "index": "4", "type": "numeric", "distinct": "320369", "missing": "0", "min": "7", "max": "20", "mean": "17", "stdev": "1" }, { "name": "r_magnitude", "index": "5", "type": "numeric", "distinct": "349261", "missing": "0", "min": "8", "max": "33", "mean": "17", "stdev": "1" }, { "name": "i_magnitude", "index": "6", "type": "numeric", "distinct": "362254", "missing": "0", "min": "-9999", "max": "32", "mean": "17", "stdev": "23" }, { "name": "z_magnitude", "index": "7", "type": "numeric", "distinct": "375290", "missing": "0", "min": "-9999", "max": "31", "mean": "16", "stdev": "26" }, { "name": "obs_run_number", "index": "8", "type": "numeric", "distinct": "610", "missing": "0", "min": "94", "max": "8162", "mean": "4014", "stdev": "1648" }, { "name": "rerun_number", "index": "9", "type": "numeric", "distinct": "1", "missing": "0", "min": "301", "max": "301", "mean": "301", "stdev": "0" }, { "name": "camera_column", "index": "10", "type": "numeric", "distinct": "6", "missing": "0", "min": "1", "max": "6", "mean": "3", "stdev": "2" }, { "name": "field_number", "index": "11", "type": "numeric", "distinct": "867", "missing": "0", "min": "11", "max": "1001", "mean": "187", "stdev": "144" }, { "name": "spectro_object_id", "index": "12", "type": "numeric", "distinct": "732977", "missing": "0", "min": "2147483647", "max": "2147483647", "mean": "2147483647", "stdev": "2147483647" }, { "name": "class", "index": "13", "type": "string", "distinct": "3", "missing": "0" }, { "name": "redshift", "index": "14", "type": "numeric", "distinct": "715201", "missing": "0", "min": "0", "max": "7", "mean": "0", "stdev": "0" }, { "name": "plate_id", "index": "15", "type": "numeric", "distinct": "6487", "missing": "0", "min": "266", "max": "11704", "mean": "2620", "stdev": "2215" }, { "name": "observation_date", "index": "16", "type": "numeric", "distinct": "2217", "missing": "0", "min": "51578", "max": "58543", "mean": "53942", "stdev": "1544" }, { "name": "fiber_id", "index": "17", "type": "numeric", "distinct": "1000", "missing": "0", "min": "1", "max": "1000", "mean": "350", "stdev": "216" } ], "nr_of_issues": 0, "nr_of_downvotes": 0, "nr_of_likes": 0, "nr_of_downloads": 0, "total_downloads": 0, "reach": 0, "reuse": 0, "impact_of_reuse": 0, "reach_of_reuse": 0, "impact": 0 }