Data Mining: Practical Machine Learning Tools and Techniques, Second Edition

sending offers only to those likely to want the product. Machine learning can help companies to find the targets. Other applicat ...

and advise viewers about the available channels. Still others may save lives. Intensive care patients may be monitored to detect ...

outliers, and so on. Most learning algorithms use statistical tests when con- structing rules or trees and for correcting models ...

ferent numbers. There are 13 possible places in which we might want to put a breakpoint for a rule involving temperature. The pr ...

eliminate the correct description from the space. The result is that the set of remaining descriptions becomes empty. This situa ...

If outlook =rainy and temperature =mild and humidity =high and windy =false then play = yes If outlook =rainy and temperature =c ...

split early on using a particular attribute might turn out later to be ill consid- ered in light of how the tree develops below ...

description languages and biases serve some problems well and other problems badly. There is no universal “best” learning method ...

status of such a “discovery”? What information is it based on? Under what con- ditions was that information collected? In what w ...

purchases? Should the manager move the most expensive, most profitable diapers near the beer, increasing sales to harried father ...

of some of the other projects mentioned in Section 1.3 (including the figures of dollars saved and related literature references ...

ing. An excellent book on machine learning from a statistical perspective is from Hastie et al. (2001). This is quite a theoreti ...

...

Before delving into the question of how machine learning methods operate, we begin by looking at the different forms the input m ...

The information that the learner is given takes the form of a set ofinstances. In the illustrations in Chapter 1, each instance ...

increase in the first, second, and third years; cost of living adjustment; and so forth. Classification learning is sometimes ca ...

44 CHAPTER 2| INPUT: CONCEPTS, INSTANCES, AND ATTRIBUTES Table 2.1 Iris data as a clustering problem. Sepal length Sepal width P ...

data in which what is to be predicted is not play or don’t play but rather is the time (in minutes) to play. With numeric predic ...

much practical use in real-life problems because they rarely involve “closed” worlds in which you can be certain that all cases ...

of the concept that is to be learned. Of course, the instances are not really inde- pendent—there are plenty of relationships am ...