{ "data_id": "40778", "name": "Madelon-test", "exact_name": "Madelon-test", "version": 1, "version_label": null, "description": "Source:\r\n\r\nIsabelle Guyon \r\nClopinet \r\n955 Creston Road \r\nBerkeley, CA 90708 \r\nisabelle '@' clopinet.com \r\n\r\n\r\nData Set Information:\r\n\r\nMADELON is an artificial dataset containing data points grouped in 32 clusters placed on the vertices of a five dimensional hypercube and randomly labeled +1 or -1. The five dimensions constitute 5 informative features. 15 linear combinations of those features were added to form a set of 20 (redundant) informative features. Based on those 20 features one must separate the examples into the 2 classes (corresponding to the +-1 labels). We added a number of distractor feature called 'probes' having no predictive power. The order of the features and patterns were randomized. \r\n\r\nMADELON -- Positive ex. -- Negative ex. -- Total \r\nTraining set -- 1000 -- 1000 -- 2000 \r\nValidation set -- 300 -- 300 -- 600 \r\nTest set -- 900 -- 900 -- 1800 \r\nAll -- 2200 -- 2200 -- 4400 \r\n\r\nNumber of variables\/features\/attributes: \r\nReal: 20 \r\nProbes: 480 \r\nTotal: 500 \r\n\r\nThis dataset is one of five datasets used in the NIPS 2003 feature selection challenge. Our website [Web Link] is still open for post-challenge submissions. Information about other related challenges are found at: [Web Link]. The CLOP package includes sample code to process these data: [Web Link]. \r\n\r\nAll details about the preparation of the data are found in our technical report: Design of experiments for the NIPS 2003 variable selection benchmark, Isabelle Guyon, July 2003, [Web Link] (also included in the dataset archive). Such information was made available only after the end of the challenge. \r\n\r\nThe data are split into training, validation, and test set. Target values are provided only for the 2 first sets. Test set performance results are obtained by submitting prediction results to: [Web Link]. \r\n\r\nThe data are in the following format: \r\ndataname.param: Parameters and statistics about the data \r\ndataname.feat: Identities of the features (in the order the features are found in the data). \r\ndataname_train.data: Training set (a space-delimited regular matrix, patterns in lines, features in columns). \r\ndataname_valid.data: Validation set. \r\ndataname_test.data: Test set. \r\ndataname_train.labels: Labels (truth values of the classes) for training examples. \r\ndataname_valid.labels: Validation set labels (withheld during the benchmark, but provided now). \r\ndataname_test.labels: Test set labels (withheld, so the data can still be use as a benchmark). \r\n\r\n#autoxgboost #autoweka", "format": "ARFF", "uploader": "Stefan Coors", "uploader_id": 1184, "visibility": "public", "creator": null, "contributor": null, "date": "2017-06-20 11:31:14", "update_comment": null, "last_update": "2017-06-20 11:31:14", "licence": "Public", "status": "in_preparation", "error_message": null, "url": "https:\/\/www.openml.org\/data\/download\/5797199\/phpImnFSE", "default_target_attribute": null, "row_id_attribute": null, "ignore_attribute": null, "runs": 0, "suggest": { "input": [ "Madelon-test", "Source: Isabelle Guyon Clopinet 955 Creston Road Berkeley, CA 90708 isabelle '@' clopinet.com Data Set Information: MADELON is an artificial dataset containing data points grouped in 32 clusters placed on the vertices of a five dimensional hypercube and randomly labeled +1 or -1. The five dimensions constitute 5 informative features. 15 linear combinations of those features were added to form a set of 20 (redundant) informative features. 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