Do it yourself: The User Classifier
The User Classifier (mentioned at the end of Section 3.2) allows Weka users to
build their own classifiers interactively. It resides in the treessection of the hier-
archical menu in Figure 10.4(a) under UserClassifier. We illustrate its operation
on a new problem, segmenting visual image data into classes such as grass, sky,
foliage, brick,and cementbased on attributes giving average intensity, hue, size,388 CHAPTER 10 | THE EXPLORER
(a)(b)
Figure 10.12Visualizing the errors: (a) from M5¢and (b) from linear regression.