Martin Wickham Iris: features: sepal length sepal width petal length petal width response: species Classification problem petalLength<2 ==> Iris-setosa petalWidth<.8 ==> Iris-setosa massive probability split between versicolor and virginica at petalWidth = 1.75 Abalone: features: Sex Length Diameter Height Whole weight Shucked weight Viscera weight Shell weight Rings response: Age Classification rules: rings + 1.5 = age (given in .names)