{
    "data_id": "44966",
    "name": "solar_flare",
    "exact_name": "solar_flare",
    "version": 7,
    "version_label": null,
    "description": "**Data Description**\n\nPredict the number of common solar flares.\n\nThe database contains 3 classes, one for the number of times a certain type of solar flare occurred in a 24 hour period.\n\nEach instance represents captured features for 1 active region on the sun.\n\n**Attribute Description**\n\n1. *class* - code for class (modified Zurich class) (A,B,C,D,E,F,H)\n2. *largest_spot_size* -  Code for largest spot size (X,R,S,A,H,K)\n3. *spot_distribution* - Code for spot distribution (X,O,I,C)\n4. *activity* - activity (1 = reduced, 2 = unchanged)\n5. *evolution* - evolution (1 = decay, 2 = no growth, 3 = growth)\n6. *previous_activity* - previous 24 hour flare activity code (1 = nothing as big as an M1, 2 = one M1, 3 = more activity than one M1)\n7. *complex* - historically-complex (1 = Yes, 2 = No)\n8. *complex_path* - whether region become historically complex on this pass across the sun's disk (1 = yes, 2 = no)\n9. *area* - area (1 = small, 2 = large)\n10. *area_largest* - area of the largest spot\n11. *c_class_flares* - number of C-class flares production by this region in the following 24 hours (common flares), target feature\n12. *m_class_flares* - number of M-class flares production by this region in the following 24 hours (moderate flares)\n13. *x_class_flares* - number of X-class flares production by this region in the following 24 hours (severe flares)",
    "format": "arff",
    "uploader": "Sebastian Fischer",
    "uploader_id": 30127,
    "visibility": "public",
    "creator": null,
    "contributor": null,
    "date": "2022-12-22 16:12:48",
    "update_comment": null,
    "last_update": "2022-12-22 16:12:48",
    "licence": "CC BY 4.0",
    "status": "active",
    "error_message": null,
    "url": "https:\/\/api.openml.org\/data\/download\/22111830\/file22f167ec44b19.arff",
    "default_target_attribute": "c_class_flares",
    "row_id_attribute": null,
    "ignore_attribute": "\"m_class_flares\",\"x_class_flares\"",
    "runs": 0,
    "suggest": {
        "input": [
            "solar_flare",
            "Predict the number of common solar flares. The database contains 3 classes, one for the number of times a certain type of solar flare occurred in a 24 hour period. Each instance represents captured features for 1 active region on the sun. 1. *class* - code for class (modified Zurich class) (A,B,C,D,E,F,H) 2. *largest_spot_size* - Code for largest spot size (X,R,S,A,H,K) 3. *spot_distribution* - Code for spot distribution (X,O,I,C) 4. *activity* - activity (1 = reduced, 2 = unchanged) 5. *evoluti "
        ],
        "weight": 5
    },
    "qualities": {
        "NumberOfInstances": 1066,
        "NumberOfFeatures": 11,
        "NumberOfClasses": 0,
        "NumberOfMissingValues": 0,
        "NumberOfInstancesWithMissingValues": 0,
        "NumberOfNumericFeatures": 3,
        "NumberOfSymbolicFeatures": 8,
        "MajorityClassSize": null,
        "MinorityClassPercentage": null,
        "MinorityClassSize": null,
        "NumberOfBinaryFeatures": 4,
        "PercentageOfBinaryFeatures": 36.36363636363637,
        "PercentageOfInstancesWithMissingValues": 0,
        "AutoCorrelation": 0.48169014084507045,
        "PercentageOfMissingValues": 0,
        "Dimensionality": 0.010318949343339587,
        "PercentageOfNumericFeatures": 27.27272727272727,
        "MajorityClassPercentage": null,
        "PercentageOfSymbolicFeatures": 72.72727272727273
    },
    "tags": [
        {
            "tag": "Machine Learning",
            "uploader": "38960"
        },
        {
            "tag": "study_353",
            "uploader": "0"
        }
    ],
    "features": [
        {
            "name": "c_class_flares",
            "index": "10",
            "type": "numeric",
            "distinct": "8",
            "missing": "0",
            "target": "1",
            "min": "0",
            "max": "8",
            "mean": "0",
            "stdev": "1"
        },
        {
            "name": "class",
            "index": "0",
            "type": "nominal",
            "distinct": "6",
            "missing": "0",
            "distr": []
        },
        {
            "name": "largest_spot_size",
            "index": "1",
            "type": "nominal",
            "distinct": "6",
            "missing": "0",
            "distr": []
        },
        {
            "name": "spot_distribution",
            "index": "2",
            "type": "nominal",
            "distinct": "4",
            "missing": "0",
            "distr": []
        },
        {
            "name": "activity",
            "index": "3",
            "type": "nominal",
            "distinct": "2",
            "missing": "0",
            "distr": []
        },
        {
            "name": "evolution",
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            "type": "numeric",
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            "missing": "0",
            "min": "1",
            "max": "3",
            "mean": "2",
            "stdev": "1"
        },
        {
            "name": "previous_activity",
            "index": "5",
            "type": "nominal",
            "distinct": "3",
            "missing": "0",
            "distr": []
        },
        {
            "name": "complex",
            "index": "6",
            "type": "nominal",
            "distinct": "2",
            "missing": "0",
            "distr": []
        },
        {
            "name": "complex_path",
            "index": "7",
            "type": "nominal",
            "distinct": "2",
            "missing": "0",
            "distr": []
        },
        {
            "name": "area",
            "index": "8",
            "type": "nominal",
            "distinct": "2",
            "missing": "0",
            "distr": []
        },
        {
            "name": "area_largest",
            "index": "9",
            "type": "numeric",
            "distinct": "1",
            "missing": "0",
            "min": "1",
            "max": "1",
            "mean": "1",
            "stdev": "0"
        },
        {
            "name": "m_class_flares",
            "index": "11",
            "type": "numeric",
            "distinct": "6",
            "missing": "0",
            "ignore": "1",
            "min": "0",
            "max": "5",
            "mean": "0",
            "stdev": "0"
        },
        {
            "name": "x_class_flares",
            "index": "12",
            "type": "numeric",
            "distinct": "3",
            "missing": "0",
            "ignore": "1",
            "min": "0",
            "max": "2",
            "mean": "0",
            "stdev": "0"
        }
    ],
    "nr_of_issues": 0,
    "nr_of_downvotes": 0,
    "nr_of_likes": 0,
    "nr_of_downloads": 0,
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    "reach": 0,
    "reuse": 0,
    "impact_of_reuse": 0,
    "reach_of_reuse": 0,
    "impact": 0
}