{ "data_id": "4", "name": "balance-scale", "exact_name": "balance-scale", "version": 1, "version_label": "1", "description": "**Author**: \n**Source**: Unknown - \n**Please cite**: \n\n1. Title: Balance Scale Weight & Distance Database\n\n2. Source Information: \n (a) Source: Generated to model psychological experiments reported\n\t\tby Siegler, R. S. (1976). Three Aspects of Cognitive\n\t\tDevelopment. Cognitive Psychology, 8, 481-520.\n (b) Donor: Tim Hume (hume@ics.uci.edu)\n (c) Date: 22 April 1994\n\n3. Past Usage: (possibly different formats of this data)\n - Publications\n\t1. Klahr, D., & Siegler, R.S. (1978). The Representation of\n\t Children's Knowledge. In H. W. Reese & L. P. Lipsitt (Eds.),\n\t Advances in Child Development and Behavior, pp. 61-116. New\n\t York: Academic Press \n\t2. Langley,P. (1987). A General Theory of Discrimination\n\t Learning. In D. Klahr, P. Langley, & R. Neches (Eds.),\n\t Production System Models of Learning and Development, pp.\n\t 99-161. Cambridge, MA: MIT Press\n\t3. Newell, A. (1990). Unified Theories of Cognition.\n\t Cambridge, MA: Harvard University Press\n\t4. McClelland, J.L. (1988). Parallel Distibuted Processing:\n\t Implications for Cognition and Development. Technical\n\t Report AIP-47, Department of Psychology, Carnegie-Mellon\n\t University \n\t5. Shultz, T., Mareschal, D., & Schmidt, W. (1994). Modeling\n\t Cognitive Development on Balance Scale Phenomena. Machine\n\t Learning, Vol. 16, pp. 59-88.\n\n4. Relevant Information: \n\tThis data set was generated to model psychological\n\texperimental results. Each example is classified as having the\n\tbalance scale tip to the right, tip to the left, or be\n\tbalanced. The attributes are the left weight, the left\n\tdistance, the right weight, and the right distance. The\n\tcorrect way to find the class is the greater of \n\t(left-distance * left-weight) and (right-distance *\n\tright-weight). If they are equal, it is balanced.\n\n5. Number of Instances: 625 (49 balanced, 288 left, 288 right)\n\n6. Number of Attributes: 4 (numeric) + class name = 5\n\n7. Attribute Information:\n\t1. Class Name: 3 (L, B, R)\n\t2. Left-Weight: 5 (1, 2, 3, 4, 5)\n\t3. Left-Distance: 5 (1, 2, 3, 4, 5)\n\t4. Right-Weight: 5 (1, 2, 3, 4, 5)\n\t5. Right-Distance: 5 (1, 2, 3, 4, 5)\n\n8. Missing Attribute Values: \n\tnone\n\n9. Class Distribution: \n 1. 46.08 percent are L\n 2. 07.84 percent are B\n 3. 46.08 percent are R", "format": "ARFF", "uploader": "Jan van Rijn", "uploader_id": 1, "visibility": "public", "creator": null, "contributor": null, "date": "2014-04-06 23:19:55", "update_comment": null, "last_update": "2014-04-06 23:19:55", "licence": "Public", "status": "active", "error_message": null, "url": "https:\/\/www.openml.org\/data\/download\/11\/dataset_11_balance-scale.arff", "default_target_attribute": "class", "row_id_attribute": null, "ignore_attribute": null, "runs": 48, "suggest": { "input": [ "balance-scale", "1. Title: Balance Scale Weight & Distance Database 2. Source Information: (a) Source: Generated to model psychological experiments reported by Siegler, R. S. (1976). Three Aspects of Cognitive Development. Cognitive Psychology, 8, 481-520. (b) Donor: Tim Hume (hume@ics.uci.edu) (c) Date: 22 April 1994 3. Past Usage: (possibly different formats of this data) - Publications 1. Klahr, D., & Siegler, R.S. (1978). The Representation of Children's Knowledge. In H. W. Reese & L. P. Lipsitt (Eds.), Adva " ], "weight": 5 }, "qualities": { "NumberOfInstances": 625, "NumberOfFeatures": 5, "NumberOfClasses": 3, "NumberOfMissingValues": 0, "NumberOfInstancesWithMissingValues": 0, "NumberOfNumericFeatures": 4, "NumberOfSymbolicFeatures": 1, "MinMeansOfNumericAtts": 3, "Quartile2MutualInformation": null, "REPTreeDepth3ErrRate": 0.21440000000000001, "DecisionStumpErrRate": 0.376, "MaxKurtosisOfNumericAtts": -1.300798439249971, "MinMutualInformation": null, "Quartile2SkewnessOfNumericAtts": 0, "REPTreeDepth3Kappa": 0.60237388724035601, "DecisionStumpKappa": 0.30267062314540061, "MaxMeansOfNumericAtts": 3, "MinNominalAttDistinctValues": 3, "PercentageOfBinaryFeatures": 0, "Quartile2StdDevOfNumericAtts": 1.4153462926807447, "RandomTreeDepth1AUC": 0.83443063798219597, "Dimensionality": 0.0080000000000000002, "MaxMutualInformation": null, "MinSkewnessOfNumericAtts": 0, "PercentageOfInstancesWithMissingValues": 0, "Quartile3AttributeEntropy": null, "RandomTreeDepth1ErrRate": 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