h2o.find_row_by_threshold: Find the threshold, give the max metric. No duplicate...

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

Find the threshold, give the max metric. No duplicate thresholds allowed

Description

Find the threshold, give the max metric. No duplicate thresholds allowed

Usage

h2o.find_row_by_threshold(object, threshold)

Arguments

object	H2OBinomialMetrics
threshold	number between 0 and 1

Examples

## Not run: 
library(h2o)
h2o.init()

f <- "https://s3.amazonaws.com/h2o-public-test-data/smalldata/junit/cars_20mpg.csv"
cars <- h2o.importFile(f)
cars["economy_20mpg"] <- as.factor(cars["economy_20mpg"])
predictors <- c("displacement", "power", "weight", "acceleration", "year")
response <- "economy_20mpg"
cars_split <- h2o.splitFrame(data = cars, ratios = 0.8, seed = 1234)
train <- cars_split[[1]]
valid <- cars_split[[2]]
cars_gbm <- h2o.gbm(x = predictors, y = response, 
                    training_frame = train, validation_frame = valid, 
                    build_tree_one_node = TRUE , seed = 1234)
perf <- h2o.performance(cars_gbm, cars)
h2o.find_row_by_threshold(perf, 0.5)

## End(Not run)

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