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plot(cars)

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library(keras)

Warning message:
R graphics engine version 12 is not supported by this version of RStudio. The Plots tab will be disabled until a newer version of RStudio is installed.

mnist <- dataset_mnist()

/home/hoang/.virtualenvs/r-tensorflow/lib/python2.7/site-packages/h5py/__init__.py:36: FutureWarning: Conversion of the second argument of issubdtype from `float` to `np.floating` is deprecated. In future, it will be treated as `np.float64 == np.dtype(float).type`.
  from ._conv import register_converters as _register_converters
Using TensorFlow backend.

Downloading data from https://s3.amazonaws.com/img-datasets/mnist.npz

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x_train <- mnist$train$x
y_train <- mnist$train$y
x_test <- mnist$test$x
y_test <- mnist$test$y

# reshape
dim(x_train) <- c(nrow(x_train), 784)
dim(x_test) <- c(nrow(x_test), 784)
# rescale
x_train <- x_train/255
x_test <- x_test/255

# one-hot encode the vectors into binary class matrices using Keras to_categorical() function
y_train <- to_categorical(y_train, 10)
y_test <- to_categorical(y_test, 10)

Defining the Model

model <- keras_model_sequential()
model %>% 
  layer_dense(units = 256, activation = "relu", input_shape = c(784)) %>%
  layer_dropout(rate=0.4) %>%
  layer_dense(units=128, activation="relu") %>%
  layer_dropout(rate=0.3) %>%
  layer_dense(units=10, activation="softmax")

summary(model)

______________________________________________________________________________________
Layer (type)                          Output Shape                       Param #      
======================================================================================
dense_1 (Dense)                       (None, 256)                        200960       
______________________________________________________________________________________
dropout_1 (Dropout)                   (None, 256)                        0            
______________________________________________________________________________________
dense_2 (Dense)                       (None, 128)                        32896        
______________________________________________________________________________________
dropout_2 (Dropout)                   (None, 128)                        0            
______________________________________________________________________________________
dense_3 (Dense)                       (None, 10)                         1290         
======================================================================================
Total params: 235,146
Trainable params: 235,146
Non-trainable params: 0
______________________________________________________________________________________

Compile the model with appropriate loss function, optimizer and metrics:

model %>% compile(
  loss = "categorical_crossentropy",
  optimizer = optimizer_rmsprop(),
  metrics = c("accuracy")
)

Traning and Evalution

history <- model %>% fit(
  x_train, y_train,
  epochs = 30, batch_size = 128,
  validation_split = 0.2
)

Train on 48000 samples, validate on 12000 samples
Epoch 1/30

2018-01-15 11:57:22.503270: I tensorflow/core/platform/cpu_feature_guard.cc:137] Your CPU supports instructions that this TensorFlow binary was not compiled to use: SSE4.1 SSE4.2 AVX AVX2 FMA
2018-01-15 11:57:22.620414: I tensorflow/stream_executor/cuda/cuda_gpu_executor.cc:892] successful NUMA node read from SysFS had negative value (-1), but there must be at least one NUMA node, so returning NUMA node zero
2018-01-15 11:57:22.620853: I tensorflow/core/common_runtime/gpu/gpu_device.cc:1030] Found device 0 with properties: 
name: GeForce GTX 1050 major: 6 minor: 1 memoryClockRate(GHz): 1.493
pciBusID: 0000:01:00.0
totalMemory: 3.95GiB freeMemory: 2.35GiB
2018-01-15 11:57:22.620866: I tensorflow/core/common_runtime/gpu/gpu_device.cc:1120] Creating TensorFlow device (/device:GPU:0) -> (device: 0, name: GeForce GTX 1050, pci bus id: 0000:01:00.0, compute capability: 6.1)


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48000/48000 [==============================] - 4s 76us/step - loss: 0.4348 - acc: 0.8681 - val_loss: 0.1652 - val_acc: 0.9499
Epoch 2/30

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Epoch 3/30

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Epoch 4/30

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Epoch 5/30

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48000/48000 [==============================] - 1s 26us/step - loss: 0.1156 - acc: 0.9662 - val_loss: 0.0964 - val_acc: 0.9721
Epoch 6/30

  128/48000 [..............................] - ETA: 3s - loss: 0.1646 - acc: 0.9453
 1280/48000 [..............................] - ETA: 2s - loss: 0.0898 - acc: 0.9672
 3456/48000 [=>............................] - ETA: 1s - loss: 0.0867 - acc: 0.9719
 5760/48000 [==>...........................] - ETA: 1s - loss: 0.0980 - acc: 0.9691
 8320/48000 [====>.........................] - ETA: 1s - loss: 0.1018 - acc: 0.9690
10752/48000 [=====>........................] - ETA: 0s - loss: 0.1028 - acc: 0.9684
13312/48000 [=======>......................] - ETA: 0s - loss: 0.1036 - acc: 0.9681
15872/48000 [========>.....................] - ETA: 0s - loss: 0.1036 - acc: 0.9682
18304/48000 [==========>...................] - ETA: 0s - loss: 0.1019 - acc: 0.9689
20864/48000 [============>.................] - ETA: 0s - loss: 0.1002 - acc: 0.9694
23040/48000 [=============>................] - ETA: 0s - loss: 0.1021 - acc: 0.9695
25344/48000 [==============>...............] - ETA: 0s - loss: 0.1040 - acc: 0.9689
27904/48000 [================>.............] - ETA: 0s - loss: 0.1042 - acc: 0.9689
30336/48000 [=================>............] - ETA: 0s - loss: 0.1051 - acc: 0.9688
32768/48000 [===================>..........] - ETA: 0s - loss: 0.1046 - acc: 0.9689
35328/48000 [=====================>........] - ETA: 0s - loss: 0.1048 - acc: 0.9689
37888/48000 [======================>.......] - ETA: 0s - loss: 0.1058 - acc: 0.9687
40448/48000 [========================>.....] - ETA: 0s - loss: 0.1055 - acc: 0.9688
42752/48000 [=========================>....] - ETA: 0s - loss: 0.1058 - acc: 0.9688
45184/48000 [===========================>..] - ETA: 0s - loss: 0.1052 - acc: 0.9688
47488/48000 [============================>.] - ETA: 0s - loss: 0.1056 - acc: 0.9688
48000/48000 [==============================] - 1s 26us/step - loss: 0.1057 - acc: 0.9687 - val_loss: 0.0991 - val_acc: 0.9738
Epoch 7/30

  128/48000 [..............................] - ETA: 3s - loss: 0.0817 - acc: 0.9766
 1280/48000 [..............................] - ETA: 2s - loss: 0.0670 - acc: 0.9820
 3456/48000 [=>............................] - ETA: 1s - loss: 0.0777 - acc: 0.9786
 5760/48000 [==>...........................] - ETA: 1s - loss: 0.0775 - acc: 0.9774
 8192/48000 [====>.........................] - ETA: 1s - loss: 0.0818 - acc: 0.9760
10624/48000 [=====>........................] - ETA: 0s - loss: 0.0893 - acc: 0.9736
13184/48000 [=======>......................] - ETA: 0s - loss: 0.0903 - acc: 0.9731
15616/48000 [========>.....................] - ETA: 0s - loss: 0.0928 - acc: 0.9718
18176/48000 [==========>...................] - ETA: 0s - loss: 0.0927 - acc: 0.9715
20608/48000 [===========>..................] - ETA: 0s - loss: 0.0943 - acc: 0.9715
22784/48000 [=============>................] - ETA: 0s - loss: 0.0973 - acc: 0.9709
25344/48000 [==============>...............] - ETA: 0s - loss: 0.0978 - acc: 0.9712
27904/48000 [================>.............] - ETA: 0s - loss: 0.0968 - acc: 0.9712
30336/48000 [=================>............] - ETA: 0s - loss: 0.0972 - acc: 0.9711
32896/48000 [===================>..........] - ETA: 0s - loss: 0.0982 - acc: 0.9708
35456/48000 [=====================>........] - ETA: 0s - loss: 0.0981 - acc: 0.9708
37760/48000 [======================>.......] - ETA: 0s - loss: 0.0968 - acc: 0.9709
39936/48000 [=======================>......] - ETA: 0s - loss: 0.0971 - acc: 0.9707
42368/48000 [=========================>....] - ETA: 0s - loss: 0.0971 - acc: 0.9707
44672/48000 [==========================>...] - ETA: 0s - loss: 0.0972 - acc: 0.9707
47104/48000 [============================>.] - ETA: 0s - loss: 0.0967 - acc: 0.9708
48000/48000 [==============================] - 1s 26us/step - loss: 0.0977 - acc: 0.9707 - val_loss: 0.0910 - val_acc: 0.9752
Epoch 8/30

  128/48000 [..............................] - ETA: 3s - loss: 0.0759 - acc: 0.9766
 1280/48000 [..............................] - ETA: 2s - loss: 0.0848 - acc: 0.9648
 3200/48000 [=>............................] - ETA: 1s - loss: 0.0893 - acc: 0.9697
 5504/48000 [==>...........................] - ETA: 1s - loss: 0.0863 - acc: 0.9727
 7936/48000 [===>..........................] - ETA: 1s - loss: 0.0866 - acc: 0.9725
10368/48000 [=====>........................] - ETA: 0s - loss: 0.0895 - acc: 0.9720
12800/48000 [=======>......................] - ETA: 0s - loss: 0.0853 - acc: 0.9733
15360/48000 [========>.....................] - ETA: 0s - loss: 0.0870 - acc: 0.9732
17792/48000 [==========>...................] - ETA: 0s - loss: 0.0879 - acc: 0.9729
20480/48000 [===========>..................] - ETA: 0s - loss: 0.0891 - acc: 0.9730
23040/48000 [=============>................] - ETA: 0s - loss: 0.0898 - acc: 0.9730
25344/48000 [==============>...............] - ETA: 0s - loss: 0.0886 - acc: 0.9734
27776/48000 [================>.............] - ETA: 0s - loss: 0.0908 - acc: 0.9727
30336/48000 [=================>............] - ETA: 0s - loss: 0.0910 - acc: 0.9726
32896/48000 [===================>..........] - ETA: 0s - loss: 0.0901 - acc: 0.9730
35456/48000 [=====================>........] - ETA: 0s - loss: 0.0898 - acc: 0.9730
38016/48000 [======================>.......] - ETA: 0s - loss: 0.0907 - acc: 0.9730
40448/48000 [========================>.....] - ETA: 0s - loss: 0.0902 - acc: 0.9731
42880/48000 [=========================>....] - ETA: 0s - loss: 0.0908 - acc: 0.9730
45440/48000 [===========================>..] - ETA: 0s - loss: 0.0908 - acc: 0.9729
48000/48000 [==============================] - 1s 26us/step - loss: 0.0900 - acc: 0.9732 - val_loss: 0.0893 - val_acc: 0.9777
Epoch 9/30

  128/48000 [..............................] - ETA: 3s - loss: 0.0382 - acc: 0.9844
 1536/48000 [..............................] - ETA: 1s - loss: 0.0803 - acc: 0.9766
 3712/48000 [=>............................] - ETA: 1s - loss: 0.0713 - acc: 0.9806
 5888/48000 [==>...........................] - ETA: 1s - loss: 0.0844 - acc: 0.9749
 8448/48000 [====>.........................] - ETA: 1s - loss: 0.0802 - acc: 0.9766
11008/48000 [=====>........................] - ETA: 0s - loss: 0.0827 - acc: 0.9757
13440/48000 [=======>......................] - ETA: 0s - loss: 0.0840 - acc: 0.9757
16000/48000 [=========>....................] - ETA: 0s - loss: 0.0853 - acc: 0.9756
18560/48000 [==========>...................] - ETA: 0s - loss: 0.0839 - acc: 0.9760
20992/48000 [============>.................] - ETA: 0s - loss: 0.0826 - acc: 0.9763
23552/48000 [=============>................] - ETA: 0s - loss: 0.0828 - acc: 0.9761
25984/48000 [===============>..............] - ETA: 0s - loss: 0.0828 - acc: 0.9760
28544/48000 [================>.............] - ETA: 0s - loss: 0.0841 - acc: 0.9755
30976/48000 [==================>...........] - ETA: 0s - loss: 0.0850 - acc: 0.9750
33536/48000 [===================>..........] - ETA: 0s - loss: 0.0855 - acc: 0.9748
35712/48000 [=====================>........] - ETA: 0s - loss: 0.0856 - acc: 0.9748
38272/48000 [======================>.......] - ETA: 0s - loss: 0.0850 - acc: 0.9752
40704/48000 [========================>.....] - ETA: 0s - loss: 0.0849 - acc: 0.9751
43264/48000 [==========================>...] - ETA: 0s - loss: 0.0844 - acc: 0.9752
45696/48000 [===========================>..] - ETA: 0s - loss: 0.0848 - acc: 0.9752
48000/48000 [==============================] - 1s 25us/step - loss: 0.0861 - acc: 0.9750 - val_loss: 0.0925 - val_acc: 0.9772
Epoch 10/30

  128/48000 [..............................] - ETA: 3s - loss: 0.0327 - acc: 0.9844
 1408/48000 [..............................] - ETA: 1s - loss: 0.0657 - acc: 0.9830
 3712/48000 [=>............................] - ETA: 1s - loss: 0.0702 - acc: 0.9801
 6144/48000 [==>...........................] - ETA: 1s - loss: 0.0687 - acc: 0.9790
 8704/48000 [====>.........................] - ETA: 0s - loss: 0.0758 - acc: 0.9783
11264/48000 [======>.......................] - ETA: 0s - loss: 0.0793 - acc: 0.9775
13952/48000 [=======>......................] - ETA: 0s - loss: 0.0789 - acc: 0.9782
16000/48000 [=========>....................] - ETA: 0s - loss: 0.0787 - acc: 0.9780
18432/48000 [==========>...................] - ETA: 0s - loss: 0.0788 - acc: 0.9780
20864/48000 [============>.................] - ETA: 0s - loss: 0.0775 - acc: 0.9781
23424/48000 [=============>................] - ETA: 0s - loss: 0.0780 - acc: 0.9778
25984/48000 [===============>..............] - ETA: 0s - loss: 0.0777 - acc: 0.9778
28544/48000 [================>.............] - ETA: 0s - loss: 0.0782 - acc: 0.9775
30848/48000 [==================>...........] - ETA: 0s - loss: 0.0779 - acc: 0.9777
33280/48000 [===================>..........] - ETA: 0s - loss: 0.0783 - acc: 0.9776
35840/48000 [=====================>........] - ETA: 0s - loss: 0.0775 - acc: 0.9778
38272/48000 [======================>.......] - ETA: 0s - loss: 0.0783 - acc: 0.9777
40832/48000 [========================>.....] - ETA: 0s - loss: 0.0779 - acc: 0.9776
43264/48000 [==========================>...] - ETA: 0s - loss: 0.0780 - acc: 0.9775
45824/48000 [===========================>..] - ETA: 0s - loss: 0.0787 - acc: 0.9772
48000/48000 [==============================] - 1s 26us/step - loss: 0.0785 - acc: 0.9773 - val_loss: 0.0935 - val_acc: 0.9778
Epoch 11/30

  128/48000 [..............................] - ETA: 3s - loss: 0.0395 - acc: 0.9844
 1408/48000 [..............................] - ETA: 1s - loss: 0.0595 - acc: 0.9830
 3456/48000 [=>............................] - ETA: 1s - loss: 0.0660 - acc: 0.9780
 5760/48000 [==>...........................] - ETA: 1s - loss: 0.0748 - acc: 0.9781
 8064/48000 [====>.........................] - ETA: 1s - loss: 0.0712 - acc: 0.9795
10368/48000 [=====>........................] - ETA: 0s - loss: 0.0734 - acc: 0.9792
12928/48000 [=======>......................] - ETA: 0s - loss: 0.0735 - acc: 0.9794
15360/48000 [========>.....................] - ETA: 0s - loss: 0.0758 - acc: 0.9785
17920/48000 [==========>...................] - ETA: 0s - loss: 0.0750 - acc: 0.9785
20480/48000 [===========>..................] - ETA: 0s - loss: 0.0751 - acc: 0.9783
22912/48000 [=============>................] - ETA: 0s - loss: 0.0748 - acc: 0.9780
25472/48000 [==============>...............] - ETA: 0s - loss: 0.0743 - acc: 0.9779
27904/48000 [================>.............] - ETA: 0s - loss: 0.0739 - acc: 0.9781
30336/48000 [=================>............] - ETA: 0s - loss: 0.0741 - acc: 0.9782
32768/48000 [===================>..........] - ETA: 0s - loss: 0.0743 - acc: 0.9780
35200/48000 [=====================>........] - ETA: 0s - loss: 0.0743 - acc: 0.9779
37632/48000 [======================>.......] - ETA: 0s - loss: 0.0761 - acc: 0.9777
40064/48000 [========================>.....] - ETA: 0s - loss: 0.0761 - acc: 0.9776
42496/48000 [=========================>....] - ETA: 0s - loss: 0.0764 - acc: 0.9775
44928/48000 [===========================>..] - ETA: 0s - loss: 0.0771 - acc: 0.9774
47488/48000 [============================>.] - ETA: 0s - loss: 0.0770 - acc: 0.9775
48000/48000 [==============================] - 1s 26us/step - loss: 0.0773 - acc: 0.9774 - val_loss: 0.0995 - val_acc: 0.9774
Epoch 12/30

  128/48000 [..............................] - ETA: 3s - loss: 0.2242 - acc: 0.9531
 1408/48000 [..............................] - ETA: 2s - loss: 0.0903 - acc: 0.9744
 3456/48000 [=>............................] - ETA: 1s - loss: 0.0676 - acc: 0.9792
 5760/48000 [==>...........................] - ETA: 1s - loss: 0.0685 - acc: 0.9807
 8192/48000 [====>.........................] - ETA: 1s - loss: 0.0662 - acc: 0.9813
10752/48000 [=====>........................] - ETA: 0s - loss: 0.0683 - acc: 0.9807
13312/48000 [=======>......................] - ETA: 0s - loss: 0.0681 - acc: 0.9808
15872/48000 [========>.....................] - ETA: 0s - loss: 0.0715 - acc: 0.9797
18304/48000 [==========>...................] - ETA: 0s - loss: 0.0711 - acc: 0.9802
20736/48000 [===========>..................] - ETA: 0s - loss: 0.0725 - acc: 0.9797
23168/48000 [=============>................] - ETA: 0s - loss: 0.0704 - acc: 0.9801
25728/48000 [===============>..............] - ETA: 0s - loss: 0.0715 - acc: 0.9798
28032/48000 [================>.............] - ETA: 0s - loss: 0.0716 - acc: 0.9798
30592/48000 [==================>...........] - ETA: 0s - loss: 0.0701 - acc: 0.9801
33152/48000 [===================>..........] - ETA: 0s - loss: 0.0696 - acc: 0.9801
35328/48000 [=====================>........] - ETA: 0s - loss: 0.0714 - acc: 0.9798
37888/48000 [======================>.......] - ETA: 0s - loss: 0.0729 - acc: 0.9795
40448/48000 [========================>.....] - ETA: 0s - loss: 0.0730 - acc: 0.9795
43008/48000 [=========================>....] - ETA: 0s - loss: 0.0727 - acc: 0.9794
45568/48000 [===========================>..] - ETA: 0s - loss: 0.0731 - acc: 0.9795
48000/48000 [==============================] - 1s 26us/step - loss: 0.0736 - acc: 0.9793 - val_loss: 0.0961 - val_acc: 0.9783
Epoch 13/30

  128/48000 [..............................] - ETA: 3s - loss: 0.0215 - acc: 0.9922
 1408/48000 [..............................] - ETA: 2s - loss: 0.0606 - acc: 0.9801
 3712/48000 [=>............................] - ETA: 1s - loss: 0.0660 - acc: 0.9801
 6144/48000 [==>...........................] - ETA: 1s - loss: 0.0679 - acc: 0.9801
 8576/48000 [====>.........................] - ETA: 0s - loss: 0.0710 - acc: 0.9791
11008/48000 [=====>........................] - ETA: 0s - loss: 0.0703 - acc: 0.9794
13568/48000 [=======>......................] - ETA: 0s - loss: 0.0673 - acc: 0.9798
16000/48000 [=========>....................] - ETA: 0s - loss: 0.0695 - acc: 0.9792
18432/48000 [==========>...................] - ETA: 0s - loss: 0.0678 - acc: 0.9797
20864/48000 [============>.................] - ETA: 0s - loss: 0.0668 - acc: 0.9800
23168/48000 [=============>................] - ETA: 0s - loss: 0.0682 - acc: 0.9796
25728/48000 [===============>..............] - ETA: 0s - loss: 0.0677 - acc: 0.9796
28160/48000 [================>.............] - ETA: 0s - loss: 0.0686 - acc: 0.9796
30592/48000 [==================>...........] - ETA: 0s - loss: 0.0696 - acc: 0.9794
32896/48000 [===================>..........] - ETA: 0s - loss: 0.0692 - acc: 0.9795
35328/48000 [=====================>........] - ETA: 0s - loss: 0.0695 - acc: 0.9793
37888/48000 [======================>.......] - ETA: 0s - loss: 0.0707 - acc: 0.9792
40448/48000 [========================>.....] - ETA: 0s - loss: 0.0700 - acc: 0.9793
43008/48000 [=========================>....] - ETA: 0s - loss: 0.0698 - acc: 0.9794
45312/48000 [===========================>..] - ETA: 0s - loss: 0.0700 - acc: 0.9793
47616/48000 [============================>.] - ETA: 0s - loss: 0.0696 - acc: 0.9794
48000/48000 [==============================] - 1s 26us/step - loss: 0.0695 - acc: 0.9794 - val_loss: 0.0972 - val_acc: 0.9789
Epoch 14/30

  128/48000 [..............................] - ETA: 2s - loss: 0.1257 - acc: 0.9688
 1408/48000 [..............................] - ETA: 1s - loss: 0.0847 - acc: 0.9780
 3456/48000 [=>............................] - ETA: 1s - loss: 0.0736 - acc: 0.9815
 5760/48000 [==>...........................] - ETA: 1s - loss: 0.0695 - acc: 0.9821
 8192/48000 [====>.........................] - ETA: 1s - loss: 0.0721 - acc: 0.9805
10624/48000 [=====>........................] - ETA: 0s - loss: 0.0673 - acc: 0.9813
13184/48000 [=======>......................] - ETA: 0s - loss: 0.0654 - acc: 0.9813
15616/48000 [========>.....................] - ETA: 0s - loss: 0.0667 - acc: 0.9812
18176/48000 [==========>...................] - ETA: 0s - loss: 0.0686 - acc: 0.9809
20480/48000 [===========>..................] - ETA: 0s - loss: 0.0694 - acc: 0.9806
23040/48000 [=============>................] - ETA: 0s - loss: 0.0677 - acc: 0.9807
25472/48000 [==============>...............] - ETA: 0s - loss: 0.0665 - acc: 0.9812
28032/48000 [================>.............] - ETA: 0s - loss: 0.0649 - acc: 0.9813
30464/48000 [==================>...........] - ETA: 0s - loss: 0.0658 - acc: 0.9811
33024/48000 [===================>..........] - ETA: 0s - loss: 0.0653 - acc: 0.9812
35456/48000 [=====================>........] - ETA: 0s - loss: 0.0645 - acc: 0.9812
37888/48000 [======================>.......] - ETA: 0s - loss: 0.0653 - acc: 0.9811
40320/48000 [========================>.....] - ETA: 0s - loss: 0.0652 - acc: 0.9810
42624/48000 [=========================>....] - ETA: 0s - loss: 0.0659 - acc: 0.9810
45056/48000 [===========================>..] - ETA: 0s - loss: 0.0662 - acc: 0.9811
47488/48000 [============================>.] - ETA: 0s - loss: 0.0666 - acc: 0.9809
48000/48000 [==============================] - 1s 26us/step - loss: 0.0670 - acc: 0.9808 - val_loss: 0.1009 - val_acc: 0.9784
Epoch 15/30

  128/48000 [..............................] - ETA: 2s - loss: 0.1321 - acc: 0.9688
 1408/48000 [..............................] - ETA: 1s - loss: 0.0632 - acc: 0.9822
 3712/48000 [=>............................] - ETA: 1s - loss: 0.0723 - acc: 0.9825
 6144/48000 [==>...........................] - ETA: 1s - loss: 0.0697 - acc: 0.9811
 8576/48000 [====>.........................] - ETA: 0s - loss: 0.0678 - acc: 0.9802
11136/48000 [=====>........................] - ETA: 0s - loss: 0.0648 - acc: 0.9810
13568/48000 [=======>......................] - ETA: 0s - loss: 0.0623 - acc: 0.9814
15872/48000 [========>.....................] - ETA: 0s - loss: 0.0630 - acc: 0.9815
18304/48000 [==========>...................] - ETA: 0s - loss: 0.0613 - acc: 0.9821
20736/48000 [===========>..................] - ETA: 0s - loss: 0.0636 - acc: 0.9817
23040/48000 [=============>................] - ETA: 0s - loss: 0.0632 - acc: 0.9819
25600/48000 [===============>..............] - ETA: 0s - loss: 0.0642 - acc: 0.9818
28160/48000 [================>.............] - ETA: 0s - loss: 0.0639 - acc: 0.9819
30592/48000 [==================>...........] - ETA: 0s - loss: 0.0646 - acc: 0.9819
33152/48000 [===================>..........] - ETA: 0s - loss: 0.0663 - acc: 0.9814
35584/48000 [=====================>........] - ETA: 0s - loss: 0.0664 - acc: 0.9813
37888/48000 [======================>.......] - ETA: 0s - loss: 0.0657 - acc: 0.9814
40320/48000 [========================>.....] - ETA: 0s - loss: 0.0668 - acc: 0.9813
42752/48000 [=========================>....] - ETA: 0s - loss: 0.0672 - acc: 0.9812
45312/48000 [===========================>..] - ETA: 0s - loss: 0.0682 - acc: 0.9808
47872/48000 [============================>.] - ETA: 0s - loss: 0.0677 - acc: 0.9809
48000/48000 [==============================] - 1s 26us/step - loss: 0.0678 - acc: 0.9808 - val_loss: 0.0986 - val_acc: 0.9786
Epoch 16/30

  128/48000 [..............................] - ETA: 3s - loss: 0.0232 - acc: 0.9922
 1280/48000 [..............................] - ETA: 2s - loss: 0.0413 - acc: 0.9859
 3456/48000 [=>............................] - ETA: 1s - loss: 0.0560 - acc: 0.9850
 5632/48000 [==>...........................] - ETA: 1s - loss: 0.0537 - acc: 0.9853
 8064/48000 [====>.........................] - ETA: 1s - loss: 0.0589 - acc: 0.9839
10496/48000 [=====>........................] - ETA: 0s - loss: 0.0601 - acc: 0.9840
12800/48000 [=======>......................] - ETA: 0s - loss: 0.0621 - acc: 0.9831
15232/48000 [========>.....................] - ETA: 0s - loss: 0.0619 - acc: 0.9836
17536/48000 [=========>....................] - ETA: 0s - loss: 0.0604 - acc: 0.9835
20096/48000 [===========>..................] - ETA: 0s - loss: 0.0603 - acc: 0.9834
22528/48000 [=============>................] - ETA: 0s - loss: 0.0604 - acc: 0.9833
24960/48000 [==============>...............] - ETA: 0s - loss: 0.0633 - acc: 0.9825
27520/48000 [================>.............] - ETA: 0s - loss: 0.0634 - acc: 0.9823
29952/48000 [=================>............] - ETA: 0s - loss: 0.0633 - acc: 0.9821
32384/48000 [===================>..........] - ETA: 0s - loss: 0.0638 - acc: 0.9818
34944/48000 [====================>.........] - ETA: 0s - loss: 0.0640 - acc: 0.9817
37504/48000 [======================>.......] - ETA: 0s - loss: 0.0643 - acc: 0.9817
39936/48000 [=======================>......] - ETA: 0s - loss: 0.0647 - acc: 0.9816
42368/48000 [=========================>....] - ETA: 0s - loss: 0.0644 - acc: 0.9816
44928/48000 [===========================>..] - ETA: 0s - loss: 0.0643 - acc: 0.9816
47360/48000 [============================>.] - ETA: 0s - loss: 0.0650 - acc: 0.9814
48000/48000 [==============================] - 1s 26us/step - loss: 0.0651 - acc: 0.9814 - val_loss: 0.1040 - val_acc: 0.9787
Epoch 17/30

  128/48000 [..............................] - ETA: 2s - loss: 0.0086 - acc: 1.0000
 1536/48000 [..............................] - ETA: 1s - loss: 0.0450 - acc: 0.9876
 3840/48000 [=>............................] - ETA: 1s - loss: 0.0454 - acc: 0.9870
 6144/48000 [==>...........................] - ETA: 1s - loss: 0.0540 - acc: 0.9839
 8704/48000 [====>.........................] - ETA: 0s - loss: 0.0553 - acc: 0.9833
11008/48000 [=====>........................] - ETA: 0s - loss: 0.0557 - acc: 0.9828
13568/48000 [=======>......................] - ETA: 0s - loss: 0.0554 - acc: 0.9825
16128/48000 [=========>....................] - ETA: 0s - loss: 0.0576 - acc: 0.9820
18688/48000 [==========>...................] - ETA: 0s - loss: 0.0585 - acc: 0.9820
20864/48000 [============>.................] - ETA: 0s - loss: 0.0594 - acc: 0.9820
23168/48000 [=============>................] - ETA: 0s - loss: 0.0599 - acc: 0.9823
25600/48000 [===============>..............] - ETA: 0s - loss: 0.0602 - acc: 0.9825
28160/48000 [================>.............] - ETA: 0s - loss: 0.0603 - acc: 0.9824
30592/48000 [==================>...........] - ETA: 0s - loss: 0.0628 - acc: 0.9822
33152/48000 [===================>..........] - ETA: 0s - loss: 0.0630 - acc: 0.9821
35712/48000 [=====================>........] - ETA: 0s - loss: 0.0634 - acc: 0.9821
38272/48000 [======================>.......] - ETA: 0s - loss: 0.0631 - acc: 0.9821
40704/48000 [========================>.....] - ETA: 0s - loss: 0.0636 - acc: 0.9821
43008/48000 [=========================>....] - ETA: 0s - loss: 0.0638 - acc: 0.9820
45568/48000 [===========================>..] - ETA: 0s - loss: 0.0637 - acc: 0.9820
48000/48000 [==============================] - 1s 26us/step - loss: 0.0647 - acc: 0.9817 - val_loss: 0.0946 - val_acc: 0.9793
Epoch 18/30

  128/48000 [..............................] - ETA: 3s - loss: 0.0244 - acc: 0.9922
 1280/48000 [..............................] - ETA: 2s - loss: 0.0566 - acc: 0.9852
 3584/48000 [=>............................] - ETA: 1s - loss: 0.0467 - acc: 0.9872
 5888/48000 [==>...........................] - ETA: 1s - loss: 0.0513 - acc: 0.9857
 8320/48000 [====>.........................] - ETA: 1s - loss: 0.0492 - acc: 0.9864
10752/48000 [=====>........................] - ETA: 0s - loss: 0.0468 - acc: 0.9867
13056/48000 [=======>......................] - ETA: 0s - loss: 0.0486 - acc: 0.9859
15360/48000 [========>.....................] - ETA: 0s - loss: 0.0497 - acc: 0.9855
17920/48000 [==========>...................] - ETA: 0s - loss: 0.0529 - acc: 0.9850
20480/48000 [===========>..................] - ETA: 0s - loss: 0.0541 - acc: 0.9846
23168/48000 [=============>................] - ETA: 0s - loss: 0.0550 - acc: 0.9844
25600/48000 [===============>..............] - ETA: 0s - loss: 0.0559 - acc: 0.9839
28032/48000 [================>.............] - ETA: 0s - loss: 0.0547 - acc: 0.9843
30336/48000 [=================>............] - ETA: 0s - loss: 0.0537 - acc: 0.9846
32896/48000 [===================>..........] - ETA: 0s - loss: 0.0554 - acc: 0.9842
35456/48000 [=====================>........] - ETA: 0s - loss: 0.0566 - acc: 0.9840
37760/48000 [======================>.......] - ETA: 0s - loss: 0.0572 - acc: 0.9840
40320/48000 [========================>.....] - ETA: 0s - loss: 0.0582 - acc: 0.9838
42752/48000 [=========================>....] - ETA: 0s - loss: 0.0585 - acc: 0.9837
45184/48000 [===========================>..] - ETA: 0s - loss: 0.0594 - acc: 0.9836
47616/48000 [============================>.] - ETA: 0s - loss: 0.0604 - acc: 0.9833
48000/48000 [==============================] - 1s 26us/step - loss: 0.0600 - acc: 0.9834 - val_loss: 0.0979 - val_acc: 0.9803
Epoch 19/30

  128/48000 [..............................] - ETA: 3s - loss: 0.0218 - acc: 0.9922
 2048/48000 [>.............................] - ETA: 1s - loss: 0.0631 - acc: 0.9834
 4608/48000 [=>............................] - ETA: 1s - loss: 0.0556 - acc: 0.9850
 7040/48000 [===>..........................] - ETA: 0s - loss: 0.0548 - acc: 0.9845
 9344/48000 [====>.........................] - ETA: 0s - loss: 0.0577 - acc: 0.9839
11776/48000 [======>.......................] - ETA: 0s - loss: 0.0555 - acc: 0.9845
14208/48000 [=======>......................] - ETA: 0s - loss: 0.0573 - acc: 0.9842
16640/48000 [=========>....................] - ETA: 0s - loss: 0.0585 - acc: 0.9840
19200/48000 [===========>..................] - ETA: 0s - loss: 0.0591 - acc: 0.9838
21632/48000 [============>.................] - ETA: 0s - loss: 0.0583 - acc: 0.9841
24192/48000 [==============>...............] - ETA: 0s - loss: 0.0582 - acc: 0.9838
26368/48000 [===============>..............] - ETA: 0s - loss: 0.0595 - acc: 0.9838
28800/48000 [=================>............] - ETA: 0s - loss: 0.0588 - acc: 0.9839
31232/48000 [==================>...........] - ETA: 0s - loss: 0.0581 - acc: 0.9839
33792/48000 [====================>.........] - ETA: 0s - loss: 0.0587 - acc: 0.9835
36224/48000 [=====================>........] - ETA: 0s - loss: 0.0590 - acc: 0.9835
38656/48000 [=======================>......] - ETA: 0s - loss: 0.0595 - acc: 0.9833
41216/48000 [========================>.....] - ETA: 0s - loss: 0.0600 - acc: 0.9832
43776/48000 [==========================>...] - ETA: 0s - loss: 0.0591 - acc: 0.9834
46080/48000 [===========================>..] - ETA: 0s - loss: 0.0591 - acc: 0.9833
48000/48000 [==============================] - 1s 25us/step - loss: 0.0600 - acc: 0.9833 - val_loss: 0.1038 - val_acc: 0.9793
Epoch 20/30

  128/48000 [..............................] - ETA: 2s - loss: 0.0162 - acc: 1.0000
 1536/48000 [..............................] - ETA: 1s - loss: 0.0575 - acc: 0.9818
 3840/48000 [=>............................] - ETA: 1s - loss: 0.0645 - acc: 0.9807
 6144/48000 [==>...........................] - ETA: 1s - loss: 0.0602 - acc: 0.9823
 8832/48000 [====>.........................] - ETA: 0s - loss: 0.0564 - acc: 0.9832
11392/48000 [======>.......................] - ETA: 0s - loss: 0.0558 - acc: 0.9836
13824/48000 [=======>......................] - ETA: 0s - loss: 0.0522 - acc: 0.9845
16000/48000 [=========>....................] - ETA: 0s - loss: 0.0547 - acc: 0.9842
18304/48000 [==========>...................] - ETA: 0s - loss: 0.0529 - acc: 0.9845
20864/48000 [============>.................] - ETA: 0s - loss: 0.0548 - acc: 0.9846
23296/48000 [=============>................] - ETA: 0s - loss: 0.0551 - acc: 0.9844
25728/48000 [===============>..............] - ETA: 0s - loss: 0.0544 - acc: 0.9846
28288/48000 [================>.............] - ETA: 0s - loss: 0.0551 - acc: 0.9845
30848/48000 [==================>...........] - ETA: 0s - loss: 0.0549 - acc: 0.9841
33280/48000 [===================>..........] - ETA: 0s - loss: 0.0544 - acc: 0.9844
35584/48000 [=====================>........] - ETA: 0s - loss: 0.0552 - acc: 0.9842
38144/48000 [======================>.......] - ETA: 0s - loss: 0.0556 - acc: 0.9843
40576/48000 [========================>.....] - ETA: 0s - loss: 0.0552 - acc: 0.9843
43008/48000 [=========================>....] - ETA: 0s - loss: 0.0557 - acc: 0.9844
45568/48000 [===========================>..] - ETA: 0s - loss: 0.0559 - acc: 0.9844
48000/48000 [==============================] - 1s 25us/step - loss: 0.0569 - acc: 0.9843 - val_loss: 0.1013 - val_acc: 0.9795
Epoch 21/30

  128/48000 [..............................] - ETA: 3s - loss: 0.0444 - acc: 0.9844
 1408/48000 [..............................] - ETA: 1s - loss: 0.0548 - acc: 0.9830
 3584/48000 [=>............................] - ETA: 1s - loss: 0.0523 - acc: 0.9872
 5888/48000 [==>...........................] - ETA: 1s - loss: 0.0595 - acc: 0.9861
 8448/48000 [====>.........................] - ETA: 1s - loss: 0.0626 - acc: 0.9851
11008/48000 [=====>........................] - ETA: 0s - loss: 0.0589 - acc: 0.9856
13568/48000 [=======>......................] - ETA: 0s - loss: 0.0567 - acc: 0.9855
16128/48000 [=========>....................] - ETA: 0s - loss: 0.0555 - acc: 0.9854
18304/48000 [==========>...................] - ETA: 0s - loss: 0.0557 - acc: 0.9850
20736/48000 [===========>..................] - ETA: 0s - loss: 0.0545 - acc: 0.9850
23296/48000 [=============>................] - ETA: 0s - loss: 0.0552 - acc: 0.9851
25856/48000 [===============>..............] - ETA: 0s - loss: 0.0548 - acc: 0.9850
28288/48000 [================>.............] - ETA: 0s - loss: 0.0558 - acc: 0.9848
30720/48000 [==================>...........] - ETA: 0s - loss: 0.0558 - acc: 0.9849
33280/48000 [===================>..........] - ETA: 0s - loss: 0.0568 - acc: 0.9848
35712/48000 [=====================>........] - ETA: 0s - loss: 0.0587 - acc: 0.9846
37888/48000 [======================>.......] - ETA: 0s - loss: 0.0581 - acc: 0.9847
40192/48000 [========================>.....] - ETA: 0s - loss: 0.0578 - acc: 0.9848
42752/48000 [=========================>....] - ETA: 0s - loss: 0.0595 - acc: 0.9842
45312/48000 [===========================>..] - ETA: 0s - loss: 0.0590 - acc: 0.9841
47872/48000 [============================>.] - ETA: 0s - loss: 0.0587 - acc: 0.9841
48000/48000 [==============================] - 1s 26us/step - loss: 0.0586 - acc: 0.9841 - val_loss: 0.0988 - val_acc: 0.9794
Epoch 22/30

  128/48000 [..............................] - ETA: 3s - loss: 0.0562 - acc: 0.9766
 1280/48000 [..............................] - ETA: 2s - loss: 0.0515 - acc: 0.9844
 3328/48000 [=>............................] - ETA: 1s - loss: 0.0562 - acc: 0.9841
 5504/48000 [==>...........................] - ETA: 1s - loss: 0.0484 - acc: 0.9855
 7936/48000 [===>..........................] - ETA: 1s - loss: 0.0489 - acc: 0.9851
10496/48000 [=====>........................] - ETA: 0s - loss: 0.0490 - acc: 0.9847
13056/48000 [=======>......................] - ETA: 0s - loss: 0.0519 - acc: 0.9845
15488/48000 [========>.....................] - ETA: 0s - loss: 0.0508 - acc: 0.9850
18048/48000 [==========>...................] - ETA: 0s - loss: 0.0497 - acc: 0.9854
20480/48000 [===========>..................] - ETA: 0s - loss: 0.0500 - acc: 0.9854
23040/48000 [=============>................] - ETA: 0s - loss: 0.0519 - acc: 0.9851
25344/48000 [==============>...............] - ETA: 0s - loss: 0.0536 - acc: 0.9850
27776/48000 [================>.............] - ETA: 0s - loss: 0.0530 - acc: 0.9853
29952/48000 [=================>............] - ETA: 0s - loss: 0.0536 - acc: 0.9851
32384/48000 [===================>..........] - ETA: 0s - loss: 0.0553 - acc: 0.9848
34816/48000 [====================>.........] - ETA: 0s - loss: 0.0541 - acc: 0.9852
37248/48000 [======================>.......] - ETA: 0s - loss: 0.0544 - acc: 0.9850
39680/48000 [=======================>......] - ETA: 0s - loss: 0.0549 - acc: 0.9847
42112/48000 [=========================>....] - ETA: 0s - loss: 0.0559 - acc: 0.9844
44544/48000 [==========================>...] - ETA: 0s - loss: 0.0560 - acc: 0.9845
47104/48000 [============================>.] - ETA: 0s - loss: 0.0564 - acc: 0.9845
48000/48000 [==============================] - 1s 26us/step - loss: 0.0568 - acc: 0.9843 - val_loss: 0.1111 - val_acc: 0.9790
Epoch 23/30

  128/48000 [..............................] - ETA: 2s - loss: 0.1276 - acc: 0.9922
 1408/48000 [..............................] - ETA: 2s - loss: 0.0630 - acc: 0.9844
 3584/48000 [=>............................] - ETA: 1s - loss: 0.0532 - acc: 0.9847
 5888/48000 [==>...........................] - ETA: 1s - loss: 0.0569 - acc: 0.9844
 8320/48000 [====>.........................] - ETA: 1s - loss: 0.0557 - acc: 0.9846
10624/48000 [=====>........................] - ETA: 0s - loss: 0.0522 - acc: 0.9856
13184/48000 [=======>......................] - ETA: 0s - loss: 0.0514 - acc: 0.9855
15616/48000 [========>.....................] - ETA: 0s - loss: 0.0526 - acc: 0.9858
18176/48000 [==========>...................] - ETA: 0s - loss: 0.0543 - acc: 0.9855
20736/48000 [===========>..................] - ETA: 0s - loss: 0.0567 - acc: 0.9849
23296/48000 [=============>................] - ETA: 0s - loss: 0.0563 - acc: 0.9851
25856/48000 [===============>..............] - ETA: 0s - loss: 0.0561 - acc: 0.9852
28288/48000 [================>.............] - ETA: 0s - loss: 0.0555 - acc: 0.9850
30848/48000 [==================>...........] - ETA: 0s - loss: 0.0542 - acc: 0.9853
33280/48000 [===================>..........] - ETA: 0s - loss: 0.0545 - acc: 0.9852
35840/48000 [=====================>........] - ETA: 0s - loss: 0.0548 - acc: 0.9849
38400/48000 [=======================>......] - ETA: 0s - loss: 0.0554 - acc: 0.9848
40960/48000 [========================>.....] - ETA: 0s - loss: 0.0555 - acc: 0.9848
43648/48000 [==========================>...] - ETA: 0s - loss: 0.0555 - acc: 0.9847
46208/48000 [===========================>..] - ETA: 0s - loss: 0.0551 - acc: 0.9847
48000/48000 [==============================] - 1s 25us/step - loss: 0.0546 - acc: 0.9848 - val_loss: 0.1039 - val_acc: 0.9802
Epoch 24/30

  128/48000 [..............................] - ETA: 3s - loss: 0.0533 - acc: 0.9766
 1536/48000 [..............................] - ETA: 1s - loss: 0.0410 - acc: 0.9889
 3712/48000 [=>............................] - ETA: 1s - loss: 0.0428 - acc: 0.9876
 6144/48000 [==>...........................] - ETA: 1s - loss: 0.0500 - acc: 0.9849
 8448/48000 [====>.........................] - ETA: 1s - loss: 0.0509 - acc: 0.9844
11008/48000 [=====>........................] - ETA: 0s - loss: 0.0524 - acc: 0.9836
13568/48000 [=======>......................] - ETA: 0s - loss: 0.0544 - acc: 0.9838
16000/48000 [=========>....................] - ETA: 0s - loss: 0.0534 - acc: 0.9838
18688/48000 [==========>...................] - ETA: 0s - loss: 0.0565 - acc: 0.9832
20992/48000 [============>.................] - ETA: 0s - loss: 0.0575 - acc: 0.9831
23424/48000 [=============>................] - ETA: 0s - loss: 0.0565 - acc: 0.9834
25856/48000 [===============>..............] - ETA: 0s - loss: 0.0588 - acc: 0.9833
28288/48000 [================>.............] - ETA: 0s - loss: 0.0584 - acc: 0.9832
30848/48000 [==================>...........] - ETA: 0s - loss: 0.0575 - acc: 0.9833
33408/48000 [===================>..........] - ETA: 0s - loss: 0.0568 - acc: 0.9835
35712/48000 [=====================>........] - ETA: 0s - loss: 0.0563 - acc: 0.9836
38272/48000 [======================>.......] - ETA: 0s - loss: 0.0556 - acc: 0.9838
40576/48000 [========================>.....] - ETA: 0s - loss: 0.0563 - acc: 0.9839
43008/48000 [=========================>....] - ETA: 0s - loss: 0.0550 - acc: 0.9843
45440/48000 [===========================>..] - ETA: 0s - loss: 0.0552 - acc: 0.9841
48000/48000 [==============================] - 1s 26us/step - loss: 0.0552 - acc: 0.9842 - val_loss: 0.1093 - val_acc: 0.9795
Epoch 25/30

  128/48000 [..............................] - ETA: 4s - loss: 0.0618 - acc: 0.9688
 1664/48000 [>.............................] - ETA: 1s - loss: 0.0405 - acc: 0.9856
 4096/48000 [=>............................] - ETA: 1s - loss: 0.0511 - acc: 0.9839
 6272/48000 [==>...........................] - ETA: 1s - loss: 0.0492 - acc: 0.9860
 8704/48000 [====>.........................] - ETA: 0s - loss: 0.0486 - acc: 0.9859
11264/48000 [======>.......................] - ETA: 0s - loss: 0.0535 - acc: 0.9852
13824/48000 [=======>......................] - ETA: 0s - loss: 0.0520 - acc: 0.9855
16384/48000 [=========>....................] - ETA: 0s - loss: 0.0524 - acc: 0.9850
18944/48000 [==========>...................] - ETA: 0s - loss: 0.0513 - acc: 0.9853
21504/48000 [============>.................] - ETA: 0s - loss: 0.0524 - acc: 0.9851
24064/48000 [==============>...............] - ETA: 0s - loss: 0.0526 - acc: 0.9852
26624/48000 [===============>..............] - ETA: 0s - loss: 0.0517 - acc: 0.9857
28928/48000 [=================>............] - ETA: 0s - loss: 0.0503 - acc: 0.9859
31488/48000 [==================>...........] - ETA: 0s - loss: 0.0505 - acc: 0.9860
34048/48000 [====================>.........] - ETA: 0s - loss: 0.0515 - acc: 0.9858
36608/48000 [=====================>........] - ETA: 0s - loss: 0.0522 - acc: 0.9857
39168/48000 [=======================>......] - ETA: 0s - loss: 0.0526 - acc: 0.9855
41728/48000 [=========================>....] - ETA: 0s - loss: 0.0520 - acc: 0.9857
44288/48000 [==========================>...] - ETA: 0s - loss: 0.0526 - acc: 0.9856
46848/48000 [============================>.] - ETA: 0s - loss: 0.0525 - acc: 0.9855
48000/48000 [==============================] - 1s 25us/step - loss: 0.0531 - acc: 0.9853 - val_loss: 0.1098 - val_acc: 0.9794
Epoch 26/30

  128/48000 [..............................] - ETA: 2s - loss: 0.0644 - acc: 0.9766
 1280/48000 [..............................] - ETA: 2s - loss: 0.0545 - acc: 0.9828
 3456/48000 [=>............................] - ETA: 1s - loss: 0.0459 - acc: 0.9870
 5760/48000 [==>...........................] - ETA: 1s - loss: 0.0498 - acc: 0.9880
 8192/48000 [====>.........................] - ETA: 1s - loss: 0.0551 - acc: 0.9866
10624/48000 [=====>........................] - ETA: 0s - loss: 0.0565 - acc: 0.9860
13184/48000 [=======>......................] - ETA: 0s - loss: 0.0529 - acc: 0.9867
15488/48000 [========>.....................] - ETA: 0s - loss: 0.0526 - acc: 0.9866
17792/48000 [==========>...................] - ETA: 0s - loss: 0.0540 - acc: 0.9862
20352/48000 [===========>..................] - ETA: 0s - loss: 0.0533 - acc: 0.9858
22784/48000 [=============>................] - ETA: 0s - loss: 0.0538 - acc: 0.9860
25216/48000 [==============>...............] - ETA: 0s - loss: 0.0544 - acc: 0.9857
27776/48000 [================>.............] - ETA: 0s - loss: 0.0542 - acc: 0.9855
30336/48000 [=================>............] - ETA: 0s - loss: 0.0539 - acc: 0.9856
32640/48000 [===================>..........] - ETA: 0s - loss: 0.0540 - acc: 0.9856
35072/48000 [====================>.........] - ETA: 0s - loss: 0.0538 - acc: 0.9856
37504/48000 [======================>.......] - ETA: 0s - loss: 0.0536 - acc: 0.9857
40064/48000 [========================>.....] - ETA: 0s - loss: 0.0537 - acc: 0.9856
42368/48000 [=========================>....] - ETA: 0s - loss: 0.0538 - acc: 0.9857
44928/48000 [===========================>..] - ETA: 0s - loss: 0.0533 - acc: 0.9858
47488/48000 [============================>.] - ETA: 0s - loss: 0.0537 - acc: 0.9856
48000/48000 [==============================] - 1s 26us/step - loss: 0.0538 - acc: 0.9856 - val_loss: 0.1106 - val_acc: 0.9801
Epoch 27/30

  128/48000 [..............................] - ETA: 3s - loss: 0.0350 - acc: 0.9766
 1408/48000 [..............................] - ETA: 1s - loss: 0.0450 - acc: 0.9858
 3584/48000 [=>............................] - ETA: 1s - loss: 0.0445 - acc: 0.9858
 6016/48000 [==>...........................] - ETA: 1s - loss: 0.0449 - acc: 0.9859
 8576/48000 [====>.........................] - ETA: 0s - loss: 0.0429 - acc: 0.9872
11008/48000 [=====>........................] - ETA: 0s - loss: 0.0470 - acc: 0.9865
13568/48000 [=======>......................] - ETA: 0s - loss: 0.0477 - acc: 0.9863
15872/48000 [========>.....................] - ETA: 0s - loss: 0.0487 - acc: 0.9862
18304/48000 [==========>...................] - ETA: 0s - loss: 0.0493 - acc: 0.9861
20864/48000 [============>.................] - ETA: 0s - loss: 0.0478 - acc: 0.9863
23552/48000 [=============>................] - ETA: 0s - loss: 0.0480 - acc: 0.9859
26112/48000 [===============>..............] - ETA: 0s - loss: 0.0495 - acc: 0.9857
28672/48000 [================>.............] - ETA: 0s - loss: 0.0502 - acc: 0.9857
31232/48000 [==================>...........] - ETA: 0s - loss: 0.0492 - acc: 0.9858
33664/48000 [====================>.........] - ETA: 0s - loss: 0.0512 - acc: 0.9857
36096/48000 [=====================>........] - ETA: 0s - loss: 0.0522 - acc: 0.9854
38528/48000 [=======================>......] - ETA: 0s - loss: 0.0523 - acc: 0.9854
41088/48000 [========================>.....] - ETA: 0s - loss: 0.0513 - acc: 0.9856
43648/48000 [==========================>...] - ETA: 0s - loss: 0.0511 - acc: 0.9857
46208/48000 [===========================>..] - ETA: 0s - loss: 0.0504 - acc: 0.9860
48000/48000 [==============================] - 1s 25us/step - loss: 0.0509 - acc: 0.9860 - val_loss: 0.1183 - val_acc: 0.9789
Epoch 28/30

  128/48000 [..............................] - ETA: 3s - loss: 0.0886 - acc: 0.9766
 1920/48000 [>.............................] - ETA: 1s - loss: 0.0582 - acc: 0.9865
 4480/48000 [=>............................] - ETA: 1s - loss: 0.0600 - acc: 0.9855
 6912/48000 [===>..........................] - ETA: 0s - loss: 0.0559 - acc: 0.9867
 9344/48000 [====>.........................] - ETA: 0s - loss: 0.0572 - acc: 0.9864
11776/48000 [======>.......................] - ETA: 0s - loss: 0.0573 - acc: 0.9857
14336/48000 [=======>......................] - ETA: 0s - loss: 0.0559 - acc: 0.9859
16768/48000 [=========>....................] - ETA: 0s - loss: 0.0569 - acc: 0.9857
19328/48000 [===========>..................] - ETA: 0s - loss: 0.0578 - acc: 0.9857
21760/48000 [============>.................] - ETA: 0s - loss: 0.0560 - acc: 0.9857
24192/48000 [==============>...............] - ETA: 0s - loss: 0.0555 - acc: 0.9859
26752/48000 [===============>..............] - ETA: 0s - loss: 0.0543 - acc: 0.9862
29184/48000 [=================>............] - ETA: 0s - loss: 0.0531 - acc: 0.9863
31744/48000 [==================>...........] - ETA: 0s - loss: 0.0536 - acc: 0.9863
34304/48000 [====================>.........] - ETA: 0s - loss: 0.0521 - acc: 0.9866
36864/48000 [======================>.......] - ETA: 0s - loss: 0.0509 - acc: 0.9868
39296/48000 [=======================>......] - ETA: 0s - loss: 0.0509 - acc: 0.9867
41856/48000 [=========================>....] - ETA: 0s - loss: 0.0515 - acc: 0.9866
44160/48000 [==========================>...] - ETA: 0s - loss: 0.0513 - acc: 0.9866
46592/48000 [============================>.] - ETA: 0s - loss: 0.0520 - acc: 0.9864
48000/48000 [==============================] - 1s 25us/step - loss: 0.0520 - acc: 0.9864 - val_loss: 0.1122 - val_acc: 0.9796
Epoch 29/30

  128/48000 [..............................] - ETA: 3s - loss: 0.0480 - acc: 0.9766
 1280/48000 [..............................] - ETA: 2s - loss: 0.0637 - acc: 0.9781
 3328/48000 [=>............................] - ETA: 1s - loss: 0.0546 - acc: 0.9832
 5504/48000 [==>...........................] - ETA: 1s - loss: 0.0547 - acc: 0.9829
 8064/48000 [====>.........................] - ETA: 1s - loss: 0.0517 - acc: 0.9845
10496/48000 [=====>........................] - ETA: 0s - loss: 0.0488 - acc: 0.9851
13056/48000 [=======>......................] - ETA: 0s - loss: 0.0485 - acc: 0.9854
15488/48000 [========>.....................] - ETA: 0s - loss: 0.0481 - acc: 0.9851
18048/48000 [==========>...................] - ETA: 0s - loss: 0.0502 - acc: 0.9850
20608/48000 [===========>..................] - ETA: 0s - loss: 0.0510 - acc: 0.9852
23040/48000 [=============>................] - ETA: 0s - loss: 0.0494 - acc: 0.9854
25472/48000 [==============>...............] - ETA: 0s - loss: 0.0513 - acc: 0.9855
27776/48000 [================>.............] - ETA: 0s - loss: 0.0528 - acc: 0.9853
30336/48000 [=================>............] - ETA: 0s - loss: 0.0537 - acc: 0.9851
33024/48000 [===================>..........] - ETA: 0s - loss: 0.0545 - acc: 0.9851
35456/48000 [=====================>........] - ETA: 0s - loss: 0.0548 - acc: 0.9850
38016/48000 [======================>.......] - ETA: 0s - loss: 0.0544 - acc: 0.9850
40576/48000 [========================>.....] - ETA: 0s - loss: 0.0541 - acc: 0.9851
43008/48000 [=========================>....] - ETA: 0s - loss: 0.0534 - acc: 0.9852
45056/48000 [===========================>..] - ETA: 0s - loss: 0.0529 - acc: 0.9853
47616/48000 [============================>.] - ETA: 0s - loss: 0.0530 - acc: 0.9853
48000/48000 [==============================] - 1s 26us/step - loss: 0.0531 - acc: 0.9854 - val_loss: 0.1190 - val_acc: 0.9797
Epoch 30/30

  128/48000 [..............................] - ETA: 3s - loss: 0.0449 - acc: 0.9766
 1280/48000 [..............................] - ETA: 2s - loss: 0.0621 - acc: 0.9852
 3200/48000 [=>............................] - ETA: 1s - loss: 0.0440 - acc: 0.9888
 5376/48000 [==>...........................] - ETA: 1s - loss: 0.0397 - acc: 0.9894
 7936/48000 [===>..........................] - ETA: 1s - loss: 0.0427 - acc: 0.9882
10496/48000 [=====>........................] - ETA: 0s - loss: 0.0422 - acc: 0.9883
12928/48000 [=======>......................] - ETA: 0s - loss: 0.0433 - acc: 0.9877
15488/48000 [========>.....................] - ETA: 0s - loss: 0.0434 - acc: 0.9875
18048/48000 [==========>...................] - ETA: 0s - loss: 0.0445 - acc: 0.9870
20480/48000 [===========>..................] - ETA: 0s - loss: 0.0450 - acc: 0.9871
22912/48000 [=============>................] - ETA: 0s - loss: 0.0483 - acc: 0.9865
25472/48000 [==============>...............] - ETA: 0s - loss: 0.0507 - acc: 0.9863
27904/48000 [================>.............] - ETA: 0s - loss: 0.0501 - acc: 0.9864
30336/48000 [=================>............] - ETA: 0s - loss: 0.0511 - acc: 0.9864
32640/48000 [===================>..........] - ETA: 0s - loss: 0.0505 - acc: 0.9865
35072/48000 [====================>.........] - ETA: 0s - loss: 0.0504 - acc: 0.9867
37376/48000 [======================>.......] - ETA: 0s - loss: 0.0505 - acc: 0.9866
39808/48000 [=======================>......] - ETA: 0s - loss: 0.0498 - acc: 0.9868
42240/48000 [=========================>....] - ETA: 0s - loss: 0.0500 - acc: 0.9869
44800/48000 [===========================>..] - ETA: 0s - loss: 0.0500 - acc: 0.9869
47232/48000 [============================>.] - ETA: 0s - loss: 0.0513 - acc: 0.9867
48000/48000 [==============================] - 1s 26us/step - loss: 0.0510 - acc: 0.9867 - val_loss: 0.1159 - val_acc: 0.9798

The history object returned by fit() includes loss and accuracy metrics

plot(history)

Evalute the model’s performance on the test data

model %>% evaluate(x_test, y_test, verbose=0)

$loss
[1] 0.105274

$acc
[1] 0.9821

Generate predictions on new data

model %>% predict_classes(x_test)

   [1] 7 2 1 0 4 1 4 9 5 9 0 6 9 0 1 5 9 7 3 4 9 6 6 5 4 0 7 4 0 1 3 1 3 4 7 2 7 1 2 1
  [41] 1 7 4 2 3 5 1 2 4 4 6 3 5 5 6 0 4 1 9 5 7 2 9 3 7 4 6 4 3 0 7 0 2 9 1 7 3 2 9 7
  [81] 7 6 2 7 8 4 7 3 6 1 3 6 9 3 1 4 1 7 6 9 6 0 5 4 9 9 2 1 9 4 8 7 3 9 7 4 4 4 9 2
 [121] 5 4 7 6 7 9 0 5 8 5 6 6 5 7 8 1 0 1 6 4 6 7 3 1 7 1 8 2 0 2 9 9 5 5 1 5 6 0 3 4
 [161] 4 6 5 4 6 5 4 5 1 4 4 7 2 3 2 7 1 8 1 8 1 8 5 0 8 9 2 5 0 1 1 1 0 9 0 3 1 6 4 2
 [201] 3 6 1 1 1 3 9 5 2 9 4 5 9 3 9 0 3 6 5 5 7 2 2 7 1 2 8 4 1 7 3 3 8 8 7 9 2 2 4 1
 [241] 5 9 8 7 2 3 0 2 4 2 4 1 9 5 7 7 2 8 2 0 8 5 7 7 9 1 8 1 8 0 3 0 1 9 9 4 1 8 2 1
 [281] 2 9 7 5 9 2 6 4 1 5 8 2 9 2 0 4 0 0 2 8 4 7 1 2 4 0 2 7 4 3 3 0 0 3 1 9 6 5 2 5
 [321] 9 7 9 3 0 4 2 0 7 1 1 2 1 5 3 3 9 7 8 6 3 6 1 3 8 1 0 5 1 3 1 5 5 6 1 8 5 1 7 9
 [361] 4 6 2 2 5 0 6 5 6 3 7 2 0 8 8 5 4 1 1 4 0 7 3 7 6 1 6 2 1 9 2 8 6 1 9 5 2 5 4 4
 [401] 2 8 3 8 2 4 5 0 3 1 7 7 5 7 9 7 1 9 2 1 4 2 9 2 0 4 9 1 4 8 1 8 4 5 9 8 8 3 7 6
 [441] 0 0 3 0 2 0 6 9 9 3 3 3 2 3 9 1 2 6 8 0 5 6 6 6 3 8 8 2 7 5 8 9 6 1 8 4 1 2 5 9
 [481] 1 9 7 5 4 0 8 9 9 1 0 5 2 3 7 2 9 4 0 6 3 9 5 2 1 3 1 3 6 5 7 4 2 2 6 3 2 6 5 4
 [521] 8 9 7 1 3 0 3 8 3 1 9 3 4 4 6 4 2 1 8 2 5 4 8 8 4 0 0 2 3 2 7 7 0 8 7 4 4 7 9 6
 [561] 9 0 9 8 0 4 6 0 6 3 5 4 8 3 3 9 3 3 3 7 8 0 2 2 1 7 0 6 5 4 3 8 0 9 6 3 8 0 9 9
 [601] 6 8 6 8 5 7 8 6 0 2 2 0 2 2 3 1 9 7 5 1 0 8 4 6 2 6 7 9 3 2 9 8 2 2 9 2 7 3 5 9
 [641] 1 8 0 2 0 5 2 1 3 7 6 7 1 2 5 8 0 3 7 7 4 0 9 1 8 6 7 7 4 3 4 9 1 9 5 1 7 3 9 7
 [681] 6 9 1 3 3 8 3 3 6 7 2 4 5 8 5 1 1 4 4 3 1 0 7 7 0 7 9 9 4 8 5 5 4 0 8 2 1 6 8 4
 [721] 8 0 4 0 6 1 7 3 2 6 7 2 6 9 3 1 4 6 2 5 9 2 0 6 2 1 7 3 4 1 0 5 4 3 1 1 7 4 9 9
 [761] 4 8 4 0 2 4 5 1 1 6 4 7 1 9 4 2 4 1 5 5 3 8 3 1 4 5 6 8 9 4 1 5 3 8 0 3 2 5 1 2
 [801] 8 3 4 4 0 8 8 3 3 1 2 3 5 9 6 3 2 6 1 3 6 0 7 2 1 7 1 4 2 4 2 1 7 9 6 1 1 2 4 8
 [841] 1 7 7 4 8 0 7 3 1 3 1 0 7 7 0 3 5 5 2 7 6 6 9 2 8 3 5 2 2 5 6 0 8 2 9 2 8 8 8 8
 [881] 7 4 9 3 0 6 6 3 2 1 3 2 2 9 3 0 0 5 7 8 3 4 4 6 0 2 9 1 4 7 4 7 3 9 8 8 4 7 1 2
 [921] 1 2 2 3 7 3 2 3 9 1 7 4 0 3 5 5 8 6 3 2 6 7 6 6 3 2 7 8 1 1 7 4 6 4 9 5 2 3 3 4
 [961] 7 8 9 1 1 6 9 1 4 4 5 4 0 6 2 2 3 1 5 1 2 0 3 8 1 2 6 7 1 6 2 3 9 0 1 2 2 0 8 9
 [ reached getOption("max.print") -- omitted 9000 entries ]

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