tree: Extract the regression tree associated with a RE-EM tree

Description Usage Arguments Value Author(s) References See Also Examples

View source: R/EMtree-functions.r View source: R/EMtree-functions.r

Description

Returns the fitted rpart object associated with a REEMtree object.

Usage

1
tree(object,...)

Arguments

object

an object of class REEMtree

...

further arguments passed to or from other methods

Value

the fitted regression tree associated with the REEMtree object

Author(s)

Rebecca Sela [email protected]

References

Sela, Rebecca J., and Simonoff, Jeffrey S., “RE-EM Trees: A Data Mining Approach for Longitudinal and Clustered Data”, Machine Learning (2011).

See Also

rpart.object, REEMtree.object

Examples

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data(simpleREEMdata)
REEMresult<-REEMtree(Y~D+t+X, data=simpleREEMdata, random=~1|ID)
tree.REEMtree(REEMresult)
tree(REEMresult)

Example output

Loading required package: nlme
Loading required package: rpart
n= 600 

node), split, n, deviance, yval
      * denotes terminal node

1) root 600 1092.91700  1.3639420  
  2) D< 0.5 300  339.28840  0.5006719  
    4) X>=0.2503819 89   62.24319 -0.3697058 *
    5) X< 0.2503819 211  181.18360  0.8677981 *
  3) D>=0.5 300  306.48750  2.2272130  
    6) t< 5.5 125  111.18930  1.6862250 *
    7) t>=5.5 175  132.58370  2.6136330 *
n= 600 

node), split, n, deviance, yval
      * denotes terminal node

1) root 600 1092.91700  1.3639420  
  2) D< 0.5 300  339.28840  0.5006719  
    4) X>=0.2503819 89   62.24319 -0.3697058 *
    5) X< 0.2503819 211  181.18360  0.8677981 *
  3) D>=0.5 300  306.48750  2.2272130  
    6) t< 5.5 125  111.18930  1.6862250 *
    7) t>=5.5 175  132.58370  2.6136330 *

REEMtree documentation built on May 30, 2017, 12:24 a.m.