estimateDevG <- function(gW, obs, weights, id,
eic1, flavor=c("learning", "superLearning", "h2oEnsembleLearning"),
learnDevG,
light=TRUE, SuperLearner.=NULL, ..., verbose=FALSE) {
## - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
## Validate arguments
## - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
## Argument 'gW':
gW <- Arguments$getNumerics(gW);
## Argument 'obs':
obs <- validateArgumentObs(obs, allowIntegers=FALSE);
## Argument 'weights':
obsWeights <- Arguments$getNumerics(weights);
## Argument 'id':
id <- Arguments$getCharacters(id);
## Argument 'eic1'
eic1 <- Arguments$getNumerics(eic1);
## Argument 'flavor':
flavor <- match.arg(flavor);
learnDevMode <- switch(flavor,
learning="function",
superLearning="character",
h2oEnsembleLearning="character");
## Argument 'learnDevG'
mode <- mode(learnDevG);
if (mode != learnDevMode) {
throw("Argument 'learnDevG' should be of mode '", learnDevMode, "', not '", mode, "' for flavor: ", flavor);
}
## Argument 'SuperLearner.'
if (flavor!="learning") {
if (is.null(SuperLearner.) || mode(SuperLearner.)!="function") {
throw("Argument 'SuperLearner.' should be a function")
}
}
## Argument 'verbose'
verbose <- Arguments$getVerbose(verbose);
if (flavor=="learning") {
devG <- learnDevG(obs, obsWeights, eic1, gW, light=light, ...);
} else if (flavor=="superLearning") {
logSL <- as.logical(less(verbose, 10)); ## decrease verbosity in SuperLearner
obsD <- as.data.frame(obs)
ZdevG <- eic1 * ( (obsD[, "X"]==0) - gW );
SL.library.devG <- learnDevG;
fitDevG <- SuperLearner.(Y=ZdevG, X=extractW(obsD), ## obsD[, "W", drop=FALSE]
obsWeights=obsWeights, id=id,
SL.library=SL.library.devG, verbose=logSL,
family=gaussian(), ...)
devG <- function(W) {
Wd <- as.data.frame(W)
predict(fitDevG, newdata=Wd)$pred
}
} else if (flavor=="h2oEnsembleLearning") {
EL.library.devG <- learnDevG;
obsD <- as.data.frame(obs)
ZdevG <- eic1 * ( (obsD[, "X"]==0) - gW );
obsD$Y <- ZdevG
data <- h2o::as.h2o(attr(SuperLearner., "H2OConnection"), obsD)
##
## CAUTION: provide 'id' as soon as this argument is supported
##
fitDevG <- SuperLearner.(y="Y", x=colnames(extractW(obsD)),
training_frame=data,
family="gaussian",
learner=EL.library.devG,
weights_column=obsWeights)
devG <- function(W) {
Wd <- as.data.frame(W)
newdata <- h2o::as.h2o(attr(SuperLearner., "H2OConnection"), Wd)
predict(fitDevG, newdata=newdata)$pred
}
}
verbose && cat(verbose, "devG(W):");
verbose && print(verbose, summary(devG(extractW(obs))));
devG
}
############################################################################
## HISTORY:
## 2014-02-07
## o Created.
############################################################################
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