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compact

Create compact regression ensemble

Syntax

cens = compact(ens)

Description

cens = compact(ens) creates a compact version of ens. You can predict regressions using cens exactly as you can using ens. However, since cens does not contain training data, you cannot perform some actions, such as cross validation.

Input Arguments

ens

A regression ensemble created with fitrensemble.

Output Arguments

cens

A compact regression ensemble. cens is of class CompactRegressionEnsemble.

Examples

expand all

Compare the size of a regression ensemble for the carsmall data to the size of the compact version of the ensemble.

Load the carsmall data set and select acceleration, number of cylinders, displacement, horsepower, and vehicle weight as predictors.

load carsmall
X = [Acceleration Cylinders Displacement Horsepower Weight];

Train an ensemble of regression trees.

ens = fitrensemble(X,MPG);

Create a compact version of ens and compare ensemble sizes.

cens = compact(ens);
b = whos('ens'); 
c = whos('cens');  
[b.bytes c.bytes]  % b.bytes = size of ens and c.bytes = size of cens
ans = 1×2

      456673      425010

The compact ensemble uses less memory.