random_categorical: Draws samples from a categorical distribution.

In rstudio/keras: R Interface to 'Keras'

Draws samples from a categorical distribution.

Description

This function takes as input logits, a 2-D input tensor with shape (batch_size, num_classes). Each row of the input represents a categorical distribution, with each column index containing the log-probability for a given class.

The function will output a 2-D tensor with shape (batch_size, num_samples), where each row contains samples from the corresponding row in logits. Each column index contains an independent samples drawn from the input distribution.

Usage

random_categorical(logits, num_samples, dtype = "int32", seed = NULL)

Arguments

logits	2-D Tensor with shape (batch_size, num_classes). Each row should define a categorical distibution with the unnormalized log-probabilities for all classes.
num_samples	Int, the number of independent samples to draw for each row of the input. This will be the second dimension of the output tensor's shape.
dtype	Optional dtype of the output tensor.
seed	An R integer or instance of random_seed_generator(). Used to make the behavior of the initializer deterministic. Note that an initializer seeded with an integer or NULL (unseeded) will produce the same random values across multiple calls. To get different random values across multiple calls, use as seed an instance of random_seed_generator().

Value

A 2-D tensor with (batch_size, num_samples).

See Also

Other random:
random_beta()
random_binomial()
random_dropout()
random_gamma()
random_integer()
random_normal()
random_seed_generator()
random_shuffle()
random_truncated_normal()
random_uniform()

rstudio/keras documentation built on April 27, 2024, 10:11 p.m.