{ "data_id": "40763", "name": "Car-train", "exact_name": "Car-train", "version": 1, "version_label": null, "description": "Source:\r\n\r\nCreator: \r\n\r\nMarko Bohanec \r\n\r\nDonors: \r\n\r\n1. Marko Bohanec (marko.bohanec '@' ijs.si) \r\n2. Blaz Zupan (blaz.zupan '@' ijs.si)\r\n\r\n\r\nData Set Information:\r\n\r\nCar Evaluation Database was derived from a simple hierarchical decision model originally developed for the demonstration of DEX, M. Bohanec, V. Rajkovic: Expert system for decision making. Sistemica 1(1), pp. 145-157, 1990.). The model evaluates cars according to the following concept structure: \r\n\r\nCAR car acceptability \r\n. PRICE overall price \r\n. . buying buying price \r\n. . maint price of the maintenance \r\n. TECH technical characteristics \r\n. . COMFORT comfort \r\n. . . doors number of doors \r\n. . . persons capacity in terms of persons to carry \r\n. . . lug_boot the size of luggage boot \r\n. . safety estimated safety of the car \r\n\r\nInput attributes are printed in lowercase. Besides the target concept (CAR), the model includes three intermediate concepts: PRICE, TECH, COMFORT. Every concept is in the original model related to its lower level descendants by a set of examples (for these examples sets see [Web Link]). \r\n\r\nThe Car Evaluation Database contains examples with the structural information removed, i.e., directly relates CAR to the six input attributes: buying, maint, doors, persons, lug_boot, safety. \r\n\r\nBecause of known underlying concept structure, this database may be particularly useful for testing constructive induction and structure discovery methods. \r\n\r\n\r\nAttribute Information:\r\n\r\nClass Values: \r\n\r\nunacc, acc, good, vgood \r\n\r\nAttributes: \r\n\r\nbuying: vhigh, high, med, low. \r\nmaint: vhigh, high, med, low. \r\ndoors: 2, 3, 4, 5more. \r\npersons: 2, 4, more. \r\nlug_boot: small, med, big. \r\nsafety: low, med, high. \r\n\r\n#autoxgboost #autoweka", "format": "ARFF", "uploader": "Stefan Coors", "uploader_id": 1184, "visibility": "public", "creator": null, "contributor": null, "date": "2017-06-20 11:17:31", "update_comment": null, "last_update": "2017-06-20 11:17:31", "licence": "Public", "status": "in_preparation", "error_message": null, "url": "https:\/\/www.openml.org\/data\/download\/5797161\/php0RIfCF", "default_target_attribute": null, "row_id_attribute": null, "ignore_attribute": null, "runs": 0, "suggest": { "input": [ "Car-train", "Source: Creator: Marko Bohanec Donors: 1. Marko Bohanec (marko.bohanec '@' ijs.si) 2. Blaz Zupan (blaz.zupan '@' ijs.si) Data Set Information: Car Evaluation Database was derived from a simple hierarchical decision model originally developed for the demonstration of DEX, M. Bohanec, V. Rajkovic: Expert system for decision making. Sistemica 1(1), pp. 145-157, 1990.). The model evaluates cars according to the following concept structure: CAR car acceptability . PRICE overall price . . buying buyin " ], "weight": 5 }, "qualities": { "NumberOfInstances": 1210, "NumberOfFeatures": 7, "NumberOfClasses": null, "NumberOfMissingValues": 0, "NumberOfInstancesWithMissingValues": 0, "NumberOfNumericFeatures": 0, "NumberOfSymbolicFeatures": 7, "ClassEntropy": null, "MeanNoiseToSignalRatio": null, "Quartile2AttributeEntropy": null, "Dimensionality": 0.005785123966942148, "MeanNominalAttDistinctValues": 3.5714285714285716, "Quartile2KurtosisOfNumericAtts": null, "EquivalentNumberOfAtts": null, "MeanSkewnessOfNumericAtts": null, "Quartile2MeansOfNumericAtts": null, "MajorityClassPercentage": null, "MeanStdDevOfNumericAtts": null, "Quartile2MutualInformation": null, "MajorityClassSize": null, "MinAttributeEntropy": null, "Quartile2SkewnessOfNumericAtts": null, "MaxAttributeEntropy": null, "MinKurtosisOfNumericAtts": null, "PercentageOfBinaryFeatures": 0, "Quartile2StdDevOfNumericAtts": null, "MaxKurtosisOfNumericAtts": null, "MinMeansOfNumericAtts": null, "PercentageOfInstancesWithMissingValues": 0, "Quartile3AttributeEntropy": null, "MaxMeansOfNumericAtts": null, "MinMutualInformation": null, "PercentageOfMissingValues": 0, "Quartile3KurtosisOfNumericAtts": null, "MaxMutualInformation": null, "MinNominalAttDistinctValues": 3, "PercentageOfNumericFeatures": 0, "Quartile3MeansOfNumericAtts": null, "MaxNominalAttDistinctValues": 4, "MinSkewnessOfNumericAtts": null, "PercentageOfSymbolicFeatures": 100, "Quartile3MutualInformation": null, "MaxSkewnessOfNumericAtts": null, "MinStdDevOfNumericAtts": null, "Quartile1AttributeEntropy": null, "Quartile3SkewnessOfNumericAtts": null, "MaxStdDevOfNumericAtts": null, "MinorityClassPercentage": null, "Quartile1KurtosisOfNumericAtts": null, "Quartile3StdDevOfNumericAtts": null, "MeanAttributeEntropy": null, "MinorityClassSize": null, "Quartile1MeansOfNumericAtts": null, "StdvNominalAttDistinctValues": 0.5345224838248487, "MeanKurtosisOfNumericAtts": null, "NumberOfBinaryFeatures": 0, "Quartile1MutualInformation": null, "MeanMeansOfNumericAtts": null, "Quartile1SkewnessOfNumericAtts": null, "AutoCorrelation": null, "MeanMutualInformation": null, "Quartile1StdDevOfNumericAtts": null }, "tags": [ { "tag": "derived", "uploader": "1" } ], "features": [ { "name": "buying", "index": "0", "type": "nominal", "distinct": "4", "missing": "0", "distr": [ [ "vhigh", "high", "med", "low" ], [ [ "250", "50", "0", "0" ], [ "225", "77", "0", "0" ], [ "185", "79", "18", "19" ], [ "183", "58", "34", "32" ] ] ] }, { "name": "maint", "index": "1", "type": "nominal", "distinct": "4", "missing": "0", "distr": [ [ "vhigh", "high", "med", "low" ], [ [ "247", "46", "0", "0" ], [ "221", "70", "0", "12" ], [ "184", "77", "18", "17" ], [ "191", "71", "34", "22" ] ] ] }, { "name": "doors", "index": "2", "type": "nominal", "distinct": "4", "missing": "0", "distr": [ [ "2", "3", "4", "5more" ], [ [ "225", "57", "12", "9" ], [ "201", "66", "13", "11" ], [ "215", "68", "12", "17" ], [ "202", "73", "15", "14" ] ] ] }, { "name": "persons", "index": "3", "type": "nominal", "distinct": "3", "missing": "0", "distr": [ [ "2", "4", "more" ], [ [ "405", "0", "0", "0" ], [ "216", "137", "32", "26" ], [ "222", "127", "20", "25" ] ] ] }, { "name": "lugboot", "index": "4", "type": "nominal", "distinct": "3", "missing": "0", "distr": [ [ "small", "med", "big" ], [ [ "316", "81", "18", "0" ], [ "268", "91", "16", "17" ], [ "259", "92", "18", "34" ] ] ] }, { "name": "safety", "index": "5", "type": "nominal", "distinct": "3", "missing": "0", "distr": [ [ "low", "med", "high" ], [ [ "407", "0", "0", "0" ], [ "229", "122", "28", "0" ], [ "207", "142", "24", "51" ] ] ] }, { "name": "class", "index": "6", "type": "nominal", "distinct": "4", "missing": "0", "distr": [ [ "unacc", "acc", "good", "vgood" ], [ [ "843", "0", "0", "0" ], [ "0", "264", "0", "0" ], [ "0", "0", "52", "0" ], [ "0", "0", "0", "51" ] ] ] } ], "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 }