splinetree (version 0.2.0)

predictYForest: Predict responses for a testset using a splineforest.

Description

Uses the forest to make predictions of responses for individuals. This method should only be used on forests where forest$intercept=TRUE. If the testdata parameter is null, makes predictions for each row of the training data. In this case, the methods parameter (which should be set to "oob", "itb", or "all") determines the method used for prediction. If the testdata parameter is not null, the methods parameter is ignored and all trees are used for the prediction of every datapoint.

Usage

predictYForest(forest, method = "oob", testdata = NULL)

Arguments

forest

A model returned from splineForest()

method

A string. Must be either "oob", "itb", or "all". Only relevant when testdata is NULL. The default value is "oob". If "oob", predictions for a given data point are made only using trees for which this data point was "out of the bag" (not in the random subsample). If "itb", predictions for a given data point are made using only the trees for which this datapoint was in the bag (in the random subsample). If "all", all trees are used for every datapoint.

testdata

the Test data to make predictions for. If this is provided, then all trees are used for all datapoints.

Value

A vector of predicted responses. The indices of the vector correspond to rows of the testdata.

Examples

# NOT RUN {
trainingSetPreds <- predictYForest(forest)
newData <- data.frame("AGE"=21, "WHITE" = 0, "BLACK"=1, "HISP"=0,
   "Num_sibs"=3, "HGC_MOTHER"=12, "HGC_FATHER"=12, "SEX"=1)
predictYForest(forest, testdata = newData)
# }