% 1. Title: Iris Plants Database % % 2. Sources: % (a) Creator: R.A. Fisher % (b) Donor: Michael Marshall (MARSHALL%PLU@io.arc.nasa.gov) % (c) Date: July, 1988 % % 3. Past Usage: % - Publications: too many to mention!!! Here are a few. % 1. Fisher,R.A. "The use of multiple measurements in taxonomic problems" % Annual Eugenics, 7, Part II, 179-188 (1936); also in "Contributions % to Mathematical Statistics" (John Wiley, NY, 1950). % 2. Duda,R.O., & Hart,P.E. (1973) Pattern Classification and Scene Analysis. % (Q327.D83) John Wiley & Sons. ISBN 0-471-22361-1. See page 218. % 3. Dasarathy, B.V. (1980) "Nosing Around the Neighborhood: A New System % Structure and Classification Rule for Recognition in Partially Exposed % Environments". IEEE Transactions on Pattern Analysis and Machine % Intelligence, Vol. PAMI-2, No. 1, 67-71. % -- Results: % -- very low misclassification rates (0% for the setosa class) % 4. Gates, G.W. (1972) "The Reduced Nearest Neighbor Rule". IEEE % Transactions on Information Theory, May 1972, 431-433. % -- Results: % -- very low misclassification rates again % 5. See also: 1988 MLC Proceedings, 54-64. Cheeseman et al's AUTOCLASS II % conceptual clustering system finds 3 classes in the data. % % 4. Relevant Information: % --- This is perhaps the best known database to be found in the pattern % recognition literature. Fisher's paper is a classic in the field % and is referenced frequently to this day. (See Duda & Hart, for % example.) The data set contains 3 classes of 50 instances each, % where each class refers to a type of iris plant. One class is % linearly separable from the other 2; the latter are NOT linearly % separable from each other. % --- Predicted attribute: class of iris plant. % --- This is an exceedingly simple domain. % % 5. Number of Instances: 150 (50 in each of three classes) % % 6. Number of Attributes: 4 numeric, predictive attributes and the class % % 7. Attribute Information: % 1. sepal length in cm % % 8. Missing Attribute Values: None % % Summary Statistics: % Min Max Mean SD Class Correlation % sepal length: 4.3 7.9 5.84 0.83 0.7826 % % 9. Class Distribution: 33.3% for each of 3 classes. @RELATION iris @ATTRIBUTE 'sepallength' REAL @DATA 38 32 38 32 38 32 38 32 38 32 38 32 38 32 240 1188 240 1188 240 1188 240 1188 240 1188 240 1188 240 1188 240 1188 240 1188 240 1188 240 1188 240 1188 240 1188 240 1188 240 1188 240 1188 240 1188 240 1188 240 1188 240 1188 240 1188 240 1188 240 1188 240 1188 240 1188 240 1188 240 1188 240 1188 240 1188 240 1188 268 1027 268 1027 268 1027 268 1027 268 1027 268 1027 268 1027 268 1027 268 1027 268 1027 268 1027 268 1027 268 1027 268 1027 268 1027 268 1027 268 1027 268 1027 268 1027 268 1027 268 1027 268 1027 268 1027 268 1027 268 1027 268 1027 268 1027 268 1027 252 211 268 1027 268 1027 252 211 252 211 252 211 252 211 252 211 252 211 252 211 252 211 252 211 252 211 252 211 252 211 252 211 252 211 252 211 252 211 252 211 252 211 252 211 252 211 252 211 252 211 252 211 252 211 252 211 252 211 252 211 252 211 252 211 201 783 1952 531 1099 1136 779 482 1031 407 233 398 1463 1272 439 387 302 263 445 550 1023 201 783 1952 531 1099 1136 779 482 1031 407 233 398 1463 1272 439 387 302 263 445 550 1023 201 783 1952 531 1099 1136 779 482 1031 407 233 398 1463 1272 439 387 302 263 445 550 1023 201 783 1952 531 1099 1136 779 482 1031 407 233 398 1463 1272 439 387 302 263 445 550 1023 201 783 1952 531 1099 1136 779 482 1031 407 233 398 1463 1272 439 387 302 263 445 550 1023 201 783 1952 531 1099 1136 779 482 1031 407 233 398 1463 1272 439 387 302 263 445 550 1023 201 783 1952 531 1099 1136 779 482 1031 407 233 398 1463 1272 439 387 302 263 445 550 1023 201 783 1952 531 1099 1136 779 482 1031 407 233 398 1463 1272 439 387 302 263 445 550 1023 201 783 1952 531 1099 1136 779 482 1031 407 233 398 1463 1272 439 387 302 263 445 550 1023 201 783 1952 531 1099 1136 779 482 1031 407 233 398 1463 1272 439 387 302 263 445 550 1023 201 783 1952 531 1099 1136 779 482 1031 407 233 398 1463 1272 439 387 302 263 445 550 1023 201 783 1952 531 1099 1136 779 482 1031 407 233 398 1463 1272 439 387 302 263 445 550 1023 201 783 1952 531 1099 1136 779 482 1031 407 233 398 1463 1272 439 387 302 263 445 550 1023 201 783 1952 531 1099 1136 779 482 1031 407 233 398 1463 1272 439 387 302 263 445 550 1023 201 783 1952 531 1099 1136 779 482 1031 407 233 398 1463 1272 439 387 302 263 445 550 1023 201 783 1952 531 1099 1136 779 482 1031 407 233 398 1463 1272 439 387 302 263 1802 1059 1802 1059 1802 1059 1802 1059 1802 1059 1802 1059 1802 1059 1802 1059 1802 1059 1802 1059 1802 1059 1802 1059 1802 1059 1802 1059 1802 1059 1802 1059 1802 1059 1802 1059 1802 1059 1802 1059 1802 1059 1802 1059 1802 1059 1802 1059 1802 1059 1802 1059 1802 1059 1802 1059 1802 1059 1802 1059 736 1287 736 1287 736 1287 736 1287 736 1287 736 1287 736 1287 736 1287 736 1287 736 1287 736 1287 736 1287 736 1287 736 1287 736 1287 736 1287 736 1287 736 1287 736 1287 736 1287 736 1287 736 1287 736 1287 736 1287 736 1287 493 1427 493 1427 493 1427 493 1427 493 1427 493 1427 493 1427 493 1427 493 1427 493 1427 493 1427 493 1427 493 1427 493 1427 493 1427 493 1427 493 1427 493 1427 493 1427 493 1427 493 1427 493 1427 493 1427 493 1427 493 1427 1000 444 1760 411 617 329 1532 488 327 130 1165 392 1108 388 846 1768 331 401 1231 550 502 453 552 893 217 185 1000 444 1760 411 617 329 1532 488 327 130 1165 392 1108 388 846 1768 331 401 1231 550 502 453 552 893 217 975 561 434 1115 1765 461 956 231 225 305 1087 197 1788 750 1179 257 842 1323 877 294 1185 2000 975 561 434 1115 1765 461 956 231 225 305 1087 197 1788 750 1179 257 842 1323 877 294 1185 2000 975 561 434 1115 1765 461 956 231 225 305 1087 197 1788 750 1179 257 842 1323 877 294 1185 2000 975 561 434 1115 1765 461 956 231 225 305 1087 197 1788 750 1179 257 842 1323 877 294 1185 2000 975 561 434 1115 1765 461 956 231 225 305 1087 197 1788 750 1179 257 842 1323 877 294 1185 2000 975 561 434 1115 1765 461 956 231 225 305 1087 197 1788 750 1179 257 842 1323 877 294 1185 2000 975 561 434 1115 1765 461 956 231 225 305 1087 197 1788 750 1179 257 842 1323 877 294 1185 2000 975 561 434 1115 1765 461 956 231 225 305 1087 197 1788 750 1179 257 842 1323 877 294 1185 2000 134 241 542 1871 167 432 1858 363 290 811 401 814 938 190 768 379 1258 1740 486 281 144 263 134 241 542 1871 167 432 1858 363 290 811 401 814 938 190 768 379 1258 1740 486 281 144 263 134 241 542 1871 167 432 1858 363 290 811 401 814 938 190 768 379 1258 1740 486 281 144 263 134 241 542 1871 167 432 1858 363 290 811 401 814 938 190 768 379 1258 1740 486 281 144 263 134 241 542 1871 167 432 1858 363 290 811 401 814 938 190 768 379 1258 1740 486 281 144 263 134 241 542 1871 167 432 1858 363 290 811 401 814 938 190 768 379 1258 1740 486 281 144 263 134 241 542 1871 167 432 1858 363 290 811 401 814 938 190 768 379 1258 1740 486 281 144 263 134 241 542 1871 167 432 1858 363 290 811 401 814 938 190 768 379 1258