{
    "data_id": "44972",
    "name": "red_wine",
    "exact_name": "red_wine",
    "version": 11,
    "version_label": null,
    "description": "**Data Description**\n\nThe data were collected from May\/2004 to February\/2007 using only protected designation of origin samples that were tested at the official certification entity (CVRVV). The CVRVV is an inter-professional organization with the goal of improving the quality and marketing of vinho verde. The data were recorded by a computerized system (iLab), which automatically manages the process of wine sample testing from producer requests to laboratory and sensory analysis. Each entry denotes a given test (analytical or sensory).\nThis dataset contains only the read wine.\n\nThe goal is using chemical analysis determine the quality of the wine.\n\n**Attribute Description**\n\n1. *fixed_acidity*\n2. *volatile_acidity*\n3. *citric_acid*\n4. *residual_sugar*\n5. *chlorides*\n6. *free_sulfur_dioxide*\n7. *total_sulfur_dioxide*\n8. *density*\n9. *pH*\n10. *sulphates*\n11. *alcohol*\n12. *quality* - target feature",
    "format": "arff",
    "uploader": "Sebastian Fischer",
    "uploader_id": 30127,
    "visibility": "public",
    "creator": null,
    "contributor": null,
    "date": "2022-12-22 16:13:18",
    "update_comment": null,
    "last_update": "2022-12-22 16:13:18",
    "licence": "CC BY 4.0",
    "status": "active",
    "error_message": null,
    "url": "https:\/\/api.openml.org\/data\/download\/22111836\/file22f162b311c38.arff",
    "default_target_attribute": "quality",
    "row_id_attribute": null,
    "ignore_attribute": null,
    "runs": 0,
    "suggest": {
        "input": [
            "red_wine",
            "The data were collected from May\/2004 to February\/2007 using only protected designation of origin samples that were tested at the official certification entity (CVRVV). The CVRVV is an inter-professional organization with the goal of improving the quality and marketing of vinho verde. The data were recorded by a computerized system (iLab), which automatically manages the process of wine sample testing from producer requests to laboratory and sensory analysis. Each entry denotes a given test (ana "
        ],
        "weight": 5
    },
    "qualities": {
        "NumberOfInstances": 1599,
        "NumberOfFeatures": 12,
        "NumberOfClasses": 0,
        "NumberOfMissingValues": 0,
        "NumberOfInstancesWithMissingValues": 0,
        "NumberOfNumericFeatures": 12,
        "NumberOfSymbolicFeatures": 0,
        "PercentageOfBinaryFeatures": 0,
        "PercentageOfInstancesWithMissingValues": 0,
        "AutoCorrelation": 0.2759699624530663,
        "PercentageOfMissingValues": 0,
        "Dimensionality": 0.0075046904315197,
        "PercentageOfNumericFeatures": 100,
        "MajorityClassPercentage": null,
        "PercentageOfSymbolicFeatures": 0,
        "MajorityClassSize": null,
        "MinorityClassPercentage": null,
        "MinorityClassSize": null,
        "NumberOfBinaryFeatures": 0
    },
    "tags": [
        {
            "tag": "Machine Learning",
            "uploader": "38960"
        },
        {
            "tag": "study_353",
            "uploader": "0"
        }
    ],
    "features": [
        {
            "name": "quality",
            "index": "11",
            "type": "numeric",
            "distinct": "6",
            "missing": "0",
            "target": "1",
            "min": "3",
            "max": "8",
            "mean": "6",
            "stdev": "1"
        },
        {
            "name": "fixed_acidity",
            "index": "0",
            "type": "numeric",
            "distinct": "96",
            "missing": "0",
            "min": "5",
            "max": "16",
            "mean": "8",
            "stdev": "2"
        },
        {
            "name": "volatile_acidity",
            "index": "1",
            "type": "numeric",
            "distinct": "143",
            "missing": "0",
            "min": "0",
            "max": "2",
            "mean": "1",
            "stdev": "0"
        },
        {
            "name": "citric_acid",
            "index": "2",
            "type": "numeric",
            "distinct": "80",
            "missing": "0",
            "min": "0",
            "max": "1",
            "mean": "0",
            "stdev": "0"
        },
        {
            "name": "residual_sugar",
            "index": "3",
            "type": "numeric",
            "distinct": "91",
            "missing": "0",
            "min": "1",
            "max": "16",
            "mean": "3",
            "stdev": "1"
        },
        {
            "name": "chlorides",
            "index": "4",
            "type": "numeric",
            "distinct": "153",
            "missing": "0",
            "min": "0",
            "max": "1",
            "mean": "0",
            "stdev": "0"
        },
        {
            "name": "free_sulfur_dioxide",
            "index": "5",
            "type": "numeric",
            "distinct": "60",
            "missing": "0",
            "min": "1",
            "max": "72",
            "mean": "16",
            "stdev": "10"
        },
        {
            "name": "total_sulfur_dioxide",
            "index": "6",
            "type": "numeric",
            "distinct": "144",
            "missing": "0",
            "min": "6",
            "max": "289",
            "mean": "46",
            "stdev": "33"
        },
        {
            "name": "density",
            "index": "7",
            "type": "numeric",
            "distinct": "436",
            "missing": "0",
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            "max": "1",
            "mean": "1",
            "stdev": "0"
        },
        {
            "name": "pH",
            "index": "8",
            "type": "numeric",
            "distinct": "89",
            "missing": "0",
            "min": "3",
            "max": "4",
            "mean": "3",
            "stdev": "0"
        },
        {
            "name": "sulphates",
            "index": "9",
            "type": "numeric",
            "distinct": "96",
            "missing": "0",
            "min": "0",
            "max": "2",
            "mean": "1",
            "stdev": "0"
        },
        {
            "name": "alcohol",
            "index": "10",
            "type": "numeric",
            "distinct": "65",
            "missing": "0",
            "min": "8",
            "max": "15",
            "mean": "10",
            "stdev": "1"
        }
    ],
    "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
}