dbn.dnn.train: Training a Deep neural network with weights initialized by...

In deepnet: Deep Learning Toolkit in R

Training a Deep neural network with weights initialized by DBN

Description

Training a Deep neural network with weights initialized by DBN

Usage

dbn.dnn.train(x, y, hidden = c(1), activationfun = "sigm", learningrate = 0.8, 
    momentum = 0.5, learningrate_scale = 1, output = "sigm", numepochs = 3, 
    batchsize = 100, hidden_dropout = 0, visible_dropout = 0, cd = 1)

Arguments

x	matrix of x values for examples
y	vector or matrix of target values for examples
hidden	vector for number of units of hidden layers.Default is c(10).
activationfun	activation function of hidden unit.Can be "sigm","linear" or "tanh".Default is "sigm" for logistic function
learningrate	learning rate for gradient descent. Default is 0.8.
momentum	momentum for gradient descent. Default is 0.5 .
learningrate_scale	learning rate will be mutiplied by this scale after every iteration. Default is 1 .
numepochs	number of iteration for samples Default is 3.
batchsize	size of mini-batch. Default is 100.
output	function of output unit, can be "sigm","linear" or "softmax". Default is "sigm".
hidden_dropout	drop out fraction for hidden layer. Default is 0.
visible_dropout	drop out fraction for input layer Default is 0.
cd	number of iteration for Gibbs sample of CD algorithm.

Author(s)

Xiao Rong

Examples

Var1 <- c(rnorm(50, 1, 0.5), rnorm(50, -0.6, 0.2))
Var2 <- c(rnorm(50, -0.8, 0.2), rnorm(50, 2, 1))
x <- matrix(c(Var1, Var2), nrow = 100, ncol = 2)
y <- c(rep(1, 50), rep(0, 50))
dnn <- dbn.dnn.train(x, y, hidden = c(5, 5))
## predict by dnn
test_Var1 <- c(rnorm(50, 1, 0.5), rnorm(50, -0.6, 0.2))
test_Var2 <- c(rnorm(50, -0.8, 0.2), rnorm(50, 2, 1))
test_x <- matrix(c(test_Var1, test_Var2), nrow = 100, ncol = 2)
nn.test(dnn, test_x, y)

deepnet documentation built on June 24, 2022, 5:06 p.m.