inst/doc/deployment.R

In cloudml: Interface to the Google Cloud Machine Learning Platform

## ----setup, include=FALSE------------------------------------------------
knitr::opts_chunk$set(echo = TRUE, eval = FALSE)

## ----eval=FALSE----------------------------------------------------------
#  library(keras)
#  
#  FLAGS <- flags(
#    flag_numeric("dropout_rate", 0.4)
#  )
#  
#  mnist <- dataset_mnist()
#  x_train <- mnist$train$x
#  y_train <- mnist$train$y
#  x_test <- mnist$test$x
#  y_test <- mnist$test$y
#  
#  x_train <- array_reshape(x_train, c(nrow(x_train), 784))
#  x_test <- array_reshape(x_test, c(nrow(x_test), 784))
#  x_train <- x_train / 255
#  x_test <- x_test / 255
#  
#  y_train <- to_categorical(y_train, 10)
#  y_test <- to_categorical(y_test, 10)
#  
#  model <- keras_model_sequential()
#  
#  model %>%
#    layer_dense(units = 256, activation = 'relu', input_shape = c(784)) %>%
#    layer_dropout(rate = FLAGS$dropout_rate) %>%
#    layer_dense(units = 128, activation = 'relu') %>%
#    layer_dropout(rate = 0.3) %>%
#    layer_dense(units = 10, activation = 'softmax')
#  
#  model %>% compile(
#    loss = 'categorical_crossentropy',
#    optimizer = optimizer_rmsprop(),
#    metrics = c('accuracy')
#  )
#  
#  model %>% fit(
#    x_train, y_train,
#    epochs = 20, batch_size = 128,
#    validation_split = 0.2
#  )
#  
#  export_savedmodel(model, "savedmodel")

## ----eval=FALSE----------------------------------------------------------
#  cloudml_deploy("savedmodel", name = "keras_mnist")

## ----eval=FALSE----------------------------------------------------------
#  mnist_image <- keras::dataset_mnist()$train$x[1,,]
#  grid::grid.raster(mnist_image / 255)

## ----eval=FALSE----------------------------------------------------------
#  cloudml_predict(
#    list(
#      as.vector(t(mnist_image))
#    ),
#    name = "keras_mnist",
#  )