[英]KerasTuneR only printing output of first trial
KerasTuneR 中的fit_tuner
function 在 Rstudio 中使用时,只打印第一次试用的进度。 下面的简化代码
library(tidyverse)
library(tensorflow)
library(keras)
library(kerastuneR)
library(ggplot2)
x_data <- matrix(data = runif(500,0,1),nrow = 50,ncol = 5)
y_data <- ifelse(runif(50,0,1) > 0.6, 1L,0L) %>% as.matrix()
x_data2 <- matrix(data = runif(500,0,1),nrow = 50,ncol = 5)
y_data2 <- ifelse(runif(50,0,1) > 0.6, 1L,0L) %>% as.matrix()
hp = HyperParameters()
hp$Int('num_layers', 5L, 20L, 2L)
hp$Int('units', 60L, 160L, 10L)
build_model <- function(hp) {
model <- keras_model_sequential() %>%
layer_dense(units = hp$get('units'), activation = 'relu', input_shape = 5)
for (i in 1:hp$get('num_layers')) {
model %>%
layer_dense(units = hp$get('units'), activation = 'relu')
}
model %>% layer_dense(units = 1)
model %>% compile(optimizer = 'adam',
loss = 'binary_crossentropy',
metrics = c('accuracy'))
return(model)
}
tuner = RandomSearch(
hypermodel = build_model,
max_trials = 3,
executions_per_trial = 2,
hyperparameters = hp,
tune_new_entries = T,
objective = 'val_accuracy',
#directory = 'C:/Users/Penelope/Desktop/NN_models/',
#project_name = 'BigFoot2',
overwrite = TRUE
)
tuner %>% fit_tuner(x = x_data, y = y_data,
epochs = 2,
validation_data = list(x_data2, y_data2))
print("Completed")
应该为每次试验打印 output ,但它只打印这个:
Search: Running Trial #1
Value |Best Value So Far |Hyperparameter
13 |? |num_layers
110 |? |units
Epoch 1/2
2/2 [==============================] - 1s 220ms/step - loss: 4.5302 - accuracy: 0.6000 - val_loss: 1.5124 - val_accuracy: 0.6000
Epoch 2/2
2/2 [==============================] - 0s 26ms/step - loss: 1.4636 - accuracy: 0.6000 - val_loss: 1.1391 - val_accuracy: 0.6000
Epoch 1/2
2/2 [==============================] - 1s 166ms/step - loss: 2.3739 - accuracy: 0.6000 - val_loss: 1.3020 - val_accuracy: 0.6000
Epoch 2/2
2/2 [==============================] - 0s 21ms/step - loss: 1.2651 - accuracy: 0.6000 - val_loss: 0.9689 - val_accuracy: 0.6000
有趣的是,它从不打印“已完成”,即使这是我代码的最后一行。
如果我直接在 R (Rx64 4.1.2) 中运行它,它会打印所有 output (就像一个巨大的转储,而不是逐行)。
这是一个已知问题,我该如何解决? 提前致谢。
R 工作室无法与 Python 交互 - 它们是两种不同的语言,所以这不是 @Quinten 建议的。 问题一定出在 Keras 代码本身的 R 版本上。
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