6.6
CLUSTERING
259
Versicolor Versicolor Versicolor Virginica Versicolor
Virginica
Versicolor Versicolor Versicolor
Versicolor Versicolor Versicolor
Virginica
Virginica Virginica
Virginica Virginica Virginica Virginica Virginica
Setosa Setosa Setosa Setosa Setosa Setosa Setosa
Setosa Setosa Setosa
(a)
Versicolor
Versicolor
Versicolor
Versicolor
Versicolor
Versicolor
Virginica
Virginica
Versicolor
Versicolor
Versicolor
Versicolor
Virginica
Virginica
Virginica
Virginica
Virginica
Virginica
Virginica
Virginica
Setosa
Setosa
Setosa
Setosa
Setosa
Setosa
Setosa Setosa
Setosa
Setosa
(b)
Figure 6.18Hierarchical clusterings of the iris data.