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Vertebral Column data
The data set (and description) can be downloaded here:
http://archive.ics.uci.edu/ml/machine-learning-databases/00212/
Description:
@relation column_2C_weka
@attribute pelvic_incidence numeric
@attribute pelvic_tilt numeric
@attribute lumbar_lordosis_angle numeric
@attribute sacral_slope numeric
@attribute pelvic_radius numeric
@attribute degree_spondylolisthesis numeric
@attribute class {Abnormal, Normal}
Citation Request:
Please refer to the repository http://archive.ics.uci.edu/ml (see citation policy).
See also Frank, A. & Asuncion, A. (2010). UCI Machine Learning Repository
[http://archive.ics.uci.edu/ml].
Irvine, CA: University of California, School of Information and Computer Science.
Descriptive statistics:
Dataset= vertebral-column : n= 310 , d= 6
Class1: n= 210
Covariance matrix:
[,1] [,2] [,3] [,4] [,5] [,6]
[1,] 311.9394 105.9087 236.1581 206.0250 -20.9393 453.9016
[2,] 105.9087 110.5790 78.8221 -4.6700 36.3767 137.0192
[3,] 236.1581 78.8221 386.8685 157.3297 19.0751 397.3477
[4,] 206.0250 -4.6700 157.3297 210.6891 -57.3146 316.8820
[5,] -20.9393 36.3767 19.0751 -57.3146 198.5553 83.9594
[6,] 453.9016 137.0192 397.3477 316.8820 83.9594 1656.2245
Correlation matrix:
[,1] [,2] [,3] [,4] [,5] [,6]
[1,] 1.0000 0.5702 0.6798 0.8036 -0.0841 0.6315
[2,] 0.5702 1.0000 0.3811 -0.0306 0.2455 0.3202
[3,] 0.6798 0.3811 1.0000 0.5511 0.0688 0.4964
[4,] 0.8036 -0.0306 0.5511 1.0000 -0.2802 0.5364
[5,] -0.0841 0.2455 0.0688 -0.2802 1.0000 0.1464
[6,] 0.6315 0.3202 0.4964 0.5364 0.1464 1.0000
Median: 64.3361 17.9956 55.6033 46.341 113.3116 32.9088
Mean: 64.6921 19.791 55.9252 44.9015 115.0774 37.7776
MCD-estimated:
MDC-0.975-Mean: 65.2391 19.8373 56.7641 45.4018 115.2113 38.441
MDC-0.750-Mean: 64.6921 19.791 55.9252 44.9015 115.0774 37.7776
MDC-0.500-Mean: 65.2391 19.8373 56.7641 45.4018 115.2113 38.441
Class2: n= 100
Covariance matrix:
[,1] [,2] [,3] [,4] [,5] [,6]
[1,] 152.9650 53.1515 107.1944 99.8139 -54.6642 15.6189
[2,] 53.1515 45.9502 25.3629 7.1993 -21.1770 7.7775
[3,] 107.1944 25.3629 152.8087 81.8374 -27.5706 20.3356
[4,] 99.8139 7.1993 81.8374 92.6171 -33.4884 7.8483
[5,] -54.6642 -21.1770 -27.5706 -33.4884 81.2478 -3.3084
[6,] 15.6189 7.7775 20.3356 7.8483 -3.3084 39.7785
Correlation matrix:
[,1] [,2] [,3] [,4] [,5] [,6]
[1,] 1.0000 0.6340 0.7011 0.8386 -0.4903 0.2002
[2,] 0.6340 1.0000 0.3027 0.1104 -0.3466 0.1819
[3,] 0.7011 0.3027 1.0000 0.6879 -0.2474 0.2608
[4,] 0.8386 0.1104 0.6879 1.0000 -0.3860 0.1293
[5,] -0.4903 -0.3466 -0.2474 -0.3860 1.0000 -0.0582
[6,] 0.2002 0.1819 0.2608 0.1293 -0.0582 1.0000
Median: 50.2138 12.3951 41.9529 37.819 124.0508 1.7519
Mean: 51.6856 12.8218 43.5423 38.8638 123.8912 2.187
MCD-estimated:
MDC-0.975-Mean: 50.5903 12.7383 42.1598 37.852 124.8966 1.3558
MDC-0.750-Mean: 51.6856 12.8218 43.5423 38.8638 123.8912 2.187
MDC-0.500-Mean: 50.5903 12.7383 42.1598 37.852 124.8966 1.3558
Measures:
Mah.Dist: 1.5358
Mah.Dist-MCD-0.975: 1.1055
Mah.Dist-MCD-0.750: 1.1055
Mah.Dist-MCD-0.500: 1.1609
All the MCD estimates have been obtained after a slight perturbation of the data set
Zuletzt geändert am 17.02.2013
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