what is CART

wikipedia

Decision trees used in data mining are of two main types:

• Classification tree analysis is when the predicted outcome is the class to which the data belongs.
• Regression tree analysis is when the predicted outcome can be considered a real number (e.g. the price of a house, or a patient’s length of stay in a hospital).

The term Classification And Regression Tree (CART) analysis is an umbrella term used to refer to both of the above procedures, first introduced by Breiman et al.^[1] Trees used for regression and trees used for classification have some similarities - but also some differences, such as the procedure used to determine where to split.^[1]