{
    "data_id": "227",
    "name": "cpu_small",
    "exact_name": "cpu_small",
    "version": 1,
    "version_label": "1",
    "description": "**Author**:   \n**Source**: Unknown -   \n**Please cite**:   \n\nThe Computer Activity databases are a collection of computer systems\n activity measures. The data was collected from a Sun Sparcstation\n 20\/712 with 128 Mbytes of memory running in a multi-user university\n department. Users would typically be doing a large variety of tasks\n ranging from accessing the internet, editing files or running very\n cpu-bound programs.  The data was collected continuously on two\n separate occasions. On both occassions, system activity was gathered\n every 5 seconds. The final dataset is taken from both occasions with\n equal numbers of observations coming from each collection epoch.\n \n System measures used:\n 1. lread - Reads (transfers per second ) between system memory and user memory.\n 2. lwrite - writes (transfers per second) between system memory and user memory.\n 3. scall - Number of system calls of all types per second.\n 4. sread - Number of system read calls per second.\n 5. swrite - Number of system write calls per second . \n 6. fork - Number of system fork calls per second. \n 7. exec - Number of system exec calls per second. \n 8. rchar - Number of characters transferred per second by system read calls.\n 9. wchar - Number of characters transfreed per second by system write calls. \n 10. pgout - Number of page out requests per second.\n 11. ppgout - Number of pages, paged out per second. \n 12. pgfree - Number of pages per second placed on the free list. \n 13. pgscan - Number of pages checked if they can be freed per second.\n 14. atch - Number of page attaches (satisfying a page fault by reclaiming a page in memory) per second.\n 15. pgin - Number of page-in requests per second.\n 16. ppgin - Number of pages paged in per second.\n 17. pflt - Number of page faults caused by protection errors (copy-on-writes). \n 18. vflt - Number of page faults caused by address translation. \n 19. runqsz - Process run queue size.\n 20. freemem - Number of memory pages available to user processes.\n 21. freeswap - Number of disk blocks available for page swapping. \n 22. usr - Portion of time (%) that cpus run in user mode.\n 23. sys - Portion of time (%) that cpus run in system mode.\n 24. wio - Portion of time (%) that cpus are idle waiting for block IO.\n 25. idle - Portion of time (%) that cpus are otherwise idle.\n \n The two different regression tasks obtained from these databases are:\n \n CompAct \n Predict usr, the portion of time that cpus run in user mode from all attributes 1-21.\n \n CompAct(s) \n Predict usr using a restricted number (excluding the paging information (10-18)\n \n Original source: DELVE repository of data. \n Source: collection of regression datasets by Luis Torgo (ltorgo@ncc.up.pt) at\n http:\/\/www.ncc.up.pt\/~ltorgo\/Regression\/DataSets.html\n Characteristics: 8192 cases, 13 continuous attributes",
    "format": "ARFF",
    "uploader": "Jan van Rijn",
    "uploader_id": 1,
    "visibility": "public",
    "creator": null,
    "contributor": "L. Torgo",
    "date": "2014-04-23 13:20:29",
    "update_comment": null,
    "last_update": "2014-04-23 13:20:29",
    "licence": "Public",
    "status": "active",
    "error_message": null,
    "url": "https:\/\/www.openml.org\/data\/download\/3664\/dataset_2213_cpu_small.arff",
    "kaggle_url": null,
    "default_target_attribute": "usr",
    "row_id_attribute": null,
    "ignore_attribute": null,
    "runs": 5,
    "suggest": {
        "input": [
            "cpu_small",
            "The Computer Activity databases are a collection of computer systems activity measures. The data was collected from a Sun Sparcstation 20\/712 with 128 Mbytes of memory running in a multi-user university department. Users would typically be doing a large variety of tasks ranging from accessing the internet, editing files or running very cpu-bound programs. The data was collected continuously on two separate occasions. On both occassions, system activity was gathered every 5 seconds. The final dat "
        ],
        "weight": 5
    },
    "qualities": {
        "NumberOfInstances": 8192,
        "NumberOfFeatures": 13,
        "NumberOfClasses": 0,
        "NumberOfMissingValues": 0,
        "NumberOfInstancesWithMissingValues": 0,
        "NumberOfNumericFeatures": 13,
        "NumberOfSymbolicFeatures": 0,
        "MaxStdDevOfNumericAtts": 422019.42695680115,
        "MinorityClassPercentage": null,
        "PercentageOfNumericFeatures": 100,
        "Quartile3MeansOfNumericAtts": 49102.304443359375,
        "CfsSubsetEval_DecisionStumpAUC": null,
        "RandomTreeDepth2AUC": null,
        "J48.00001.ErrRate": null,
        "MeanAttributeEntropy": null,
        "MinorityClassSize": null,
        "PercentageOfSymbolicFeatures": 0,
        "Quartile3MutualInformation": null,
        "CfsSubsetEval_DecisionStumpErrRate": null,
        "RandomTreeDepth2ErrRate": null,
        "J48.00001.Kappa": null,
        "MeanKurtosisOfNumericAtts": 72.11975585200834,
        "NaiveBayesAUC": null,
        "Quartile1AttributeEntropy": null,
        "Quartile3SkewnessOfNumericAtts": 7.532654830324831,
        "CfsSubsetEval_DecisionStumpKappa": null,
        "RandomTreeDepth2Kappa": null,
        "J48.0001.AUC": null,
        "MeanMeansOfNumericAtts": 125046.85950477015,
        "NaiveBayesErrRate": null,
        "Quartile1KurtosisOfNumericAtts": 3.830507178491383,
        "Quartile3StdDevOfNumericAtts": 71619.483395849,
        "CfsSubsetEval_NaiveBayesAUC": null,
        "RandomTreeDepth3AUC": null,
        "J48.0001.ErrRate": null,
        "MeanMutualInformation": null,
        "NaiveBayesKappa": null,
        "Quartile1MeansOfNumericAtts": 16.33294677734375,
        "REPTreeDepth1AUC": null,
        "CfsSubsetEval_NaiveBayesErrRate": null,
        "RandomTreeDepth3ErrRate": null,
        "J48.0001.Kappa": null,
        "MeanNoiseToSignalRatio": null,
        "NumberOfBinaryFeatures": 0,
        "Quartile1MutualInformation": null,
        "REPTreeDepth1ErrRate": null,
        "CfsSubsetEval_NaiveBayesKappa": null,
        "RandomTreeDepth3Kappa": null,
        "J48.001.AUC": null,
        "MeanNominalAttDistinctValues": null,
        "Quartile1SkewnessOfNumericAtts": 1.3550429373213086,
        "REPTreeDepth1Kappa": null,
        "CfsSubsetEval_kNN1NAUC": null,
        "StdvNominalAttDistinctValues": null,
        "J48.001.ErrRate": null,
        "MeanSkewnessOfNumericAtts": 4.421146606963751,
        "Quartile1StdDevOfNumericAtts": 24.146815170635044,
        "REPTreeDepth2AUC": null,
        "CfsSubsetEval_kNN1NErrRate": null,
        "kNN1NAUC": null,
        "J48.001.Kappa": null,
        "MeanStdDevOfNumericAtts": 62074.41403311702,
        "Quartile2AttributeEntropy": null,
        "REPTreeDepth2ErrRate": null,
        "CfsSubsetEval_kNN1NKappa": null,
        "kNN1NErrRate": null,
        "MajorityClassPercentage": null,
        "MinAttributeEntropy": null,
        "Quartile2KurtosisOfNumericAtts": 19.42134742954797,
        "REPTreeDepth2Kappa": null,
        "ClassEntropy": null,
        "kNN1NKappa": null,
        "MajorityClassSize": null,
        "MinKurtosisOfNumericAtts": 0.9031412644665848,
        "Quartile2MeansOfNumericAtts": 150.0582275390625,
        "REPTreeDepth3AUC": null,
        "DecisionStumpAUC": null,
        "MaxAttributeEntropy": null,
        "MinMeansOfNumericAtts": 1.8845544433593753,
        "Quartile2MutualInformation": null,
        "REPTreeDepth3ErrRate": null,
        "DecisionStumpErrRate": null,
        "MaxKurtosisOfNumericAtts": 313.7492588907212,
        "MinMutualInformation": null,
        "Quartile2SkewnessOfNumericAtts": 3.8480246018594433,
        "REPTreeDepth3Kappa": null,
        "DecisionStumpKappa": null,
        "MaxMeansOfNumericAtts": 1328125.9598388672,
        "MinNominalAttDistinctValues": null,
        "PercentageOfBinaryFeatures": 0,
        "Quartile2StdDevOfNumericAtts": 160.47897998993858,
        "RandomTreeDepth1AUC": null,
        "Dimensionality": 0.0015869140625,
        "MaxMutualInformation": null,
        "MinSkewnessOfNumericAtts": -3.4167496030436424,
        "PercentageOfInstancesWithMissingValues": 0,
        "Quartile3AttributeEntropy": null,
        "RandomTreeDepth1ErrRate": null,
        "EquivalentNumberOfAtts": null,
        "MaxNominalAttDistinctValues": null,
        "MinStdDevOfNumericAtts": 2.479493426887122,
        "PercentageOfMissingValues": 0,
        "Quartile3KurtosisOfNumericAtts": 131.53293516909667,
        "AutoCorrelation": -14.015504822366012,
        "RandomTreeDepth1Kappa": null,
        "J48.00001.AUC": null,
        "MaxSkewnessOfNumericAtts": 13.89785224277495
    },
    "tags": [
        {
            "uploader": "38960",
            "tag": "Computing"
        },
        {
            "uploader": "38960",
            "tag": "Data Analysis"
        },
        {
            "uploader": "5824",
            "tag": "study_130"
        }
    ],
    "features": [
        {
            "name": "usr",
            "index": "12",
            "type": "numeric",
            "distinct": "56",
            "missing": "0",
            "target": "1",
            "min": "0",
            "max": "99",
            "mean": "84",
            "stdev": "18"
        },
        {
            "name": "lread",
            "index": "0",
            "type": "numeric",
            "distinct": "235",
            "missing": "0",
            "min": "0",
            "max": "1845",
            "mean": "20",
            "stdev": "53"
        },
        {
            "name": "lwrite",
            "index": "1",
            "type": "numeric",
            "distinct": "189",
            "missing": "0",
            "min": "0",
            "max": "575",
            "mean": "13",
            "stdev": "30"
        },
        {
            "name": "scall",
            "index": "2",
            "type": "numeric",
            "distinct": "4115",
            "missing": "0",
            "min": "109",
            "max": "12493",
            "mean": "2306",
            "stdev": "1634"
        },
        {
            "name": "sread",
            "index": "3",
            "type": "numeric",
            "distinct": "794",
            "missing": "0",
            "min": "6",
            "max": "5318",
            "mean": "210",
            "stdev": "199"
        },
        {
            "name": "swrite",
            "index": "4",
            "type": "numeric",
            "distinct": "640",
            "missing": "0",
            "min": "7",
            "max": "5456",
            "mean": "150",
            "stdev": "160"
        },
        {
            "name": "fork",
            "index": "5",
            "type": "numeric",
            "distinct": "228",
            "missing": "0",
            "min": "0",
            "max": "20",
            "mean": "2",
            "stdev": "2"
        },
        {
            "name": "exec",
            "index": "6",
            "type": "numeric",
            "distinct": "386",
            "missing": "0",
            "min": "0",
            "max": "60",
            "mean": "3",
            "stdev": "5"
        },
        {
            "name": "rchar",
            "index": "7",
            "type": "numeric",
            "distinct": "7997",
            "missing": "0",
            "min": "278",
            "max": "2526649",
            "mean": "197014",
            "stdev": "239481"
        },
        {
            "name": "wchar",
            "index": "8",
            "type": "numeric",
            "distinct": "7939",
            "missing": "0",
            "min": "1498",
            "max": "1801623",
            "mean": "95898",
            "stdev": "140757"
        },
        {
            "name": "runqsz",
            "index": "9",
            "type": "numeric",
            "distinct": "302",
            "missing": "0",
            "min": "1",
            "max": "2823",
            "mean": "20",
            "stdev": "126"
        },
        {
            "name": "freemem",
            "index": "10",
            "type": "numeric",
            "distinct": "3165",
            "missing": "0",
            "min": "55",
            "max": "12027",
            "mean": "1763",
            "stdev": "2482"
        },
        {
            "name": "freeswap",
            "index": "11",
            "type": "numeric",
            "distinct": "7658",
            "missing": "0",
            "min": "2",
            "max": "2243187",
            "mean": "1328126",
            "stdev": "422019"
        }
    ],
    "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
}