Description Usage Format Details Source Examples
The Ionosphere dataset from the UCI Machine Learning Repository
1 |
A data frame with 351 observations on the following 33 variables.
The original dataset contains 34 predictors, but we have eliminated the two first features, because the first feature had the same value in one of the classes and the second feature assumes the value 0 in all observations.
The UCI Machine Learning Database Repository at:
1 2 3 | #---Outlier detection in ionosphere class-1 using the Mahalanobis distiance----
data(ionosphere)
mahaout(ionosphere,1)
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Warning messages:
1: In rgl.init(initValue, onlyNULL) : RGL: unable to open X11 display
2: 'rgl_init' failed, running with rgl.useNULL = TRUE
3: .onUnload failed in unloadNamespace() for 'rgl', details:
call: fun(...)
error: object 'rgl_quit' not found
Ouliers given by the boxplot of the Mahalanobis distance
115 27 272
12.96700 12.68787 11.86717
$outme
115 27 272 143 275 70 231 313
12.966997 12.687866 11.867165 11.460713 11.431267 11.169341 10.929060 10.898057
118 290 200 257 110 172 294 38
10.806016 10.727117 10.704994 10.378539 10.293997 10.064789 10.057415 9.992291
164 41 351 307 273 148 266 144
9.863106 9.862989 9.825559 9.396631 9.385295 9.208611 9.064129 9.039424
348 39 263 295 298 281 249 239
8.886604 8.647847 8.601908 8.575358 8.528415 8.336114 8.242017 8.223519
66 304 137 29 23 283 25 50
8.153396 8.086737 8.044677 8.043519 8.027346 8.015211 7.925383 7.791989
9 32 62 282 305 94 311 165
7.686399 7.518011 7.483942 7.301468 7.246875 7.214722 7.185513 7.150828
206 42 258 109 265 155 213 271
7.141740 7.084486 7.001747 6.925393 6.701354 6.701152 6.691678 6.666784
43 175 134 15 90 299 214 173
6.518256 6.430749 6.378421 6.182562 6.142469 6.103678 6.102048 6.051873
26 327 270 322 14 103 181 321
6.036902 6.015007 6.012037 5.991317 5.918798 5.834993 5.773905 5.761145
344 35 8 309 116 208 68 212
5.754443 5.736882 5.639997 5.548631 5.535852 5.468769 5.437791 5.410863
161 46 20 168 31 264 11 243
5.354982 5.326981 5.320164 5.309286 5.252225 5.246686 5.197210 5.174492
284 126 69 296 236 145 342 220
5.156558 5.067577 5.028895 4.947865 4.928340 4.828512 4.788916 4.743381
57 122 248 277 178 191 104 59
4.732342 4.658915 4.657948 4.582986 4.582187 4.569154 4.541794 4.526771
250 146 135 341 4 54 198 80
4.501076 4.359307 4.353891 4.284854 4.268186 4.215637 4.171406 4.104016
18 180 176 223 24 86 74 184
4.027183 4.014645 4.013309 3.993233 3.987827 3.982318 3.977467 3.959924
76 340 177 53 171 268 52 167
3.940995 3.939413 3.904828 3.892498 3.862755 3.755569 3.692698 3.686792
22 319 96 169 55 253 192 345
3.680766 3.662957 3.658775 3.646951 3.645496 3.605612 3.596143 3.593559
350 71 226 314 210 82 77 6
3.589833 3.584166 3.574713 3.527686 3.490908 3.489290 3.481833 3.470824
67 72 133 285 2 136 235 219
3.460234 3.453515 3.436700 3.396584 3.390581 3.389826 3.364244 3.363516
92 179 269 182 10 247 47 163
3.321544 3.310471 3.303155 3.283902 3.275855 3.242564 3.232642 3.221011
56 130 233 228 185 123 102 234
3.197108 3.184342 3.176326 3.132374 3.105918 3.101743 3.101382 3.090424
312 131 190 63 347 240 106 120
3.088084 3.054322 3.048503 3.024330 2.991015 2.959063 2.939611 2.937155
189 188 13 334 48 329 40 153
2.914913 2.895785 2.889628 2.831784 2.762144 2.749948 2.729145 2.690578
343 89 128 44 230 49 251 300
2.677576 2.653054 2.642427 2.637915 2.615845 2.599082 2.574345 2.382535
129 217 100 7 51 1 315 203
2.346529 2.322357 2.284214 2.280140 2.244116 2.238395 2.212948 2.167268
244 141 149 337 156 256 232 317
2.086925 2.046646 2.041727 1.974911 1.966278 1.939506 1.937758 1.918688
238 150 30 288 12 280 259 95
1.845629 1.827207 1.817729 1.796300 1.775276 1.761293 1.741101 1.698380
241 142 229 37 199 88 218 17
1.692984 1.681683 1.678441 1.672192 1.646785 1.644683 1.490526 1.444078
222
1.382434
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