x_iris {ascentTraining}

Iris predictors data for Species classification

Description

This data was taken from Edgar Anderson's famous iris data set. This gives the measurements (in centimeters) of the variables sepal length and width and petal length and width, respectively, for 50 flowers from each of 3 species of iris. The species are Iris setosa, versicolor, and virginica. However, the species is seen as the target variable, and as such has been removed from this dataset, whilst being added to the counterpart y_iris dataset. Furthermore, the 4 remaining 'predictor' variables have been separated into a training and test set with a ratio of 4:1, followed by centering and scaling.

Usage

x_iris

Format

A list of two named matrices, 'train' and 'test', representing the training and test sets for the predictors. These have 4 columns each, with 120 and 30 rows respectively.

Sepal.Length

Sepal length

Sepal.Width

Sepal width

Petal.Length

Petal length

Petal.Width

Petal width

Source

Fisher, R. A. (1936) The use of multiple measurements in taxonomic problems. Annals of Eugenics, 7, Part II, 179-188. The data were collected by Anderson, Edgar (1935). The irises of the Gaspe Peninsula, Bulletin of the American Iris Society, 59, 2-5

• https://stat.ethz.ch/R-manual/R-devel/library/datasets/html/iris.html

References

Becker, R. A., Chambers, J. M. and Wilks, A. R. (1988) The New S Language. Wadsworth & Brooks/Cole.