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## ----setup, include = FALSE---------------------------------------------------
library(keras)
knitr::opts_chunk$set(comment = NA, eval = FALSE)
## -----------------------------------------------------------------------------
# model %>% compile(
# loss = 'categorical_crossentropy',
# optimizer = optimizer_rmsprop(),
# metrics = c('accuracy')
# )
#
# history <- model %>% fit(
# x_train, y_train,
# epochs = 30, batch_size = 128,
# validation_split = 0.2
# )
## -----------------------------------------------------------------------------
# plot(history)
## -----------------------------------------------------------------------------
# history_df <- as.data.frame(history)
# str(history_df)
## -----------------------------------------------------------------------------
# # don't show metrics during this run
# history <- model %>% fit(
# x_train, y_train,
# epochs = 30, batch_size = 128,
# view_metrics = FALSE,
# validation_split = 0.2
# )
#
# # set global default to never show metrics
# options(keras.view_metrics = FALSE)
## -----------------------------------------------------------------------------
# history <- model %>% fit(
# x_train, y_train,
# batch_size = batch_size,
# epochs = epochs,
# verbose = 1,
# callbacks = callback_tensorboard("logs/run_a"),
# validation_split = 0.2
# )
## -----------------------------------------------------------------------------
# tensorboard("logs/run_a")
## -----------------------------------------------------------------------------
# # launch TensorBoard (data won't show up until after the first epoch)
# tensorboard("logs/run_a")
#
# # fit the model with the TensorBoard callback
# history <- model %>% fit(
# x_train, y_train,
# batch_size = batch_size,
# epochs = epochs,
# verbose = 1,
# callbacks = callback_tensorboard("logs/run_a"),
# validation_split = 0.2
# )
## -----------------------------------------------------------------------------
# callback_tensorboard(log_dir = "logs/run_b")
## -----------------------------------------------------------------------------
# tensorboard("logs")
## -----------------------------------------------------------------------------
# tensorboard(c("logs/run_a", "logs/run_b"))
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