staged_predict_proba.H2OModel: Predict class probabilities at each stage of an H2O Model

In h2o: R Interface for the 'H2O' Scalable Machine Learning Platform

Predict class probabilities at each stage of an H2O Model

Description

The output structure is analogous to the output of h2o.predict_leaf_node_assignment. For each tree t and class c there will be a column Tt.Cc (eg. T3.C1 for tree 3 and class 1). The value will be the corresponding predicted probability of this class by combining the raw contributions of trees T1.Cc,..,TtCc. Binomial models build the trees just for the first class and values in columns Tx.C1 thus correspond to the the probability p0.

Usage

staged_predict_proba.H2OModel(object, newdata, ...)

h2o.staged_predict_proba(object, newdata, ...)

Arguments

object	a fitted H2OModel object for which prediction is desired
newdata	An H2OFrame object in which to look for variables with which to predict.
...	additional arguments to pass on.

Value

Returns an H2OFrame object with predicted probability for each tree in the model.

See Also

h2o.gbm and h2o.randomForest for model generation in h2o.

Examples

## Not run: 
library(h2o)
h2o.init()
prostate_path <- system.file("extdata", "prostate.csv", package = "h2o")
prostate <- h2o.uploadFile(path = prostate_path)
prostate$CAPSULE <- as.factor(prostate$CAPSULE)
prostate_gbm <- h2o.gbm(3:9, "CAPSULE", prostate)
h2o.predict(prostate_gbm, prostate)
h2o.staged_predict_proba(prostate_gbm, prostate)

## End(Not run)

h2o documentation built on May 29, 2024, 4:26 a.m.