Holdout method:

All data is randomly divided into same equal size data sets. e.g,

1. Training set
2. Test set
3. Validation set

Training set:

• It is a data set helps in the prediction of the model.

[quads id=1]

Test set:

• Unseen data is used as a subset of the data set to assess the performance of the model.

Validation set:

• The validation set is also a data set used to assess the performance of model built during the training.

For example;

There are total 3 data sets.

Total training set for model construction

• 2/3

Total test set for accuracy estimation

• 1/3