h2o (version 2.8.4.4)

h2o.runif: Produces a vector of specified length contain random uniform numbers

Description

Produces a vector of random uniform numbers.

Usage

h2o.runif(x, min = 0, max = 1, seed = -1)

Arguments

x

An H2OParsedData object with number of rows equal to the number of elements the vector of random numbers should have.

min

An integer specifying the lower bound of the distribution.

max

An integer specifying the upper bound of the distribution.

seed

(Optional) Random seed used to generate draws from the uniform distribution. The default of -1 results in a seed equal to the current system time in milliseconds.

Value

• A vector of random, uniformly distributed numbers. The elements are between 0 and 1 unless otherwise specified.

Details

x must be a H2OParsedData object so that H2O can generate random numbers aligned with the dataset for efficient large-scale sampling and filtering.

Examples

library(h2o)
localH2O = h2o.init()
prosPath = system.file("extdata", "prostate.csv", package="h2o")
prostate.hex = h2o.importFile(localH2O, path = prosPath, key = "prostate.hex")
s = h2o.runif(prostate.hex)
summary(s)

prostate.train = prostate.hex[s <= 0.8,]
prostate.train = h2o.assign(prostate.train, "prostate.train")
prostate.test = prostate.hex[s > 0.8,]
prostate.test = h2o.assign(prostate.test, "prostate.test")
nrow(prostate.train) + nrow(prostate.test)