@article {12979,
	title = {Applying permutation tests to tree-based statistical models: extending the R package rpart},
	volume = {2004-24},
	year = {2004},
	month = {2004///},
	institution = {University of Maryland Institute for Advanced Computer Studies},
	abstract = {Tree-based statistical models are useful for evaluating relationships between predictor and response variables and for generating predictions when the response is unknown. However, current methods of constructing tree-based models do not provide a probabilistic assessment of the models produced. Here we describe our work to use permutation tests to quantitatively estimate the probability of tree-based statistical models. We have extended the rpart (recursive partitioning) package of the R system for statistical data analysis. This extension, rpart.permutation, executes the permutations in parallel, using MPI (Message Passing Interface) to greatly decrease the time necessary to complete the analysis.},
	author = {Cummings, Michael P. and Myers,D. S and Mangelson,M}
}
