locfit (version 19980714-2)

cltrain: Training dataset for classification

Description

200 observations from a 2 population model. Under population 0, (x_{1,i}) has a standard normal distribution, and (x_{2,i} = (2-x_{1,i}^2+z_i)/3), where (z_i) is also standard normal. Under population 1, (x_{2,i} = -(2-x_{1,i}^2+z_i)/3). The optimal classification regions form a checkerboard pattern, with horizontal boundary at (x_2=0), vertical boundaries at (x_1 = \pm2).

This is the same model as the cltrain dataset.

Usage

data(cltrain)

Arguments

format

Data Frame. Three variables x1, x2 and y. The latter indicates class membership.