Practical Applications of Data Mining

14 Chapter 1 IntroduCtIon to data MInIng

Figure 1.5 shows the role and the relationship of the training set, the valida-

tion set, and the test set. First, the training set is used to build an untrained neural

network model and to train it. The validation set is then used by the network

to validate the trained neural network model and to determine the appropriate

number of hidden layers and nodes. After the trained network model is built

and validated, the results can be generated in response to the test sets provided.

In Chapter 6, various neural network models are presented as tools for data

mining and are illustrated with a number of different ...