TensorFlow Addons Callback: Bilah Kemajuan TQDM

Lihat di TensorFlow.org

Jalankan di Google Colab

Lihat sumber di GitHub

Unduh buku catatan

Gambaran

Notebook ini akan menunjukkan cara menggunakan TQDMCallback di TensorFlow Addons.

Mempersiapkan

pip install -U tensorflow-addons

!pip install -q "tqdm>=4.36.1"

import tensorflow as tf
import tensorflow_addons as tfa

from tensorflow.keras.datasets import mnist
from tensorflow.keras.models import Sequential
from tensorflow.keras.layers import Dense, Dropout, Flatten

import tqdm

# quietly deep-reload tqdm
import sys
from IPython.lib import deepreload 

stdout = sys.stdout
sys.stdout = open('junk','w')
deepreload.reload(tqdm)
sys.stdout = stdout

tqdm.__version__

'4.62.3'

Impor dan Normalisasikan Data

# the data, split between train and test sets
(x_train, y_train), (x_test, y_test) = mnist.load_data()
# normalize data
x_train, x_test = x_train / 255.0, x_test / 255.0

Bangun Model CNN MNIST Sederhana

# build the model using the Sequential API
model = Sequential()
model.add(Flatten(input_shape=(28, 28)))
model.add(Dense(128, activation='relu'))
model.add(Dropout(0.2))
model.add(Dense(10, activation='softmax'))

model.compile(optimizer='adam',
              loss = 'sparse_categorical_crossentropy',
              metrics=['accuracy'])

Penggunaan TQDMCallback Default

# initialize tqdm callback with default parameters
tqdm_callback = tfa.callbacks.TQDMProgressBar()

# train the model with tqdm_callback
# make sure to set verbose = 0 to disable
# the default progress bar.
model.fit(x_train, y_train,
          batch_size=64,
          epochs=10,
          verbose=0,
          callbacks=[tqdm_callback],
          validation_data=(x_test, y_test))

Training:   0%|           0/10 ETA: ?s,  ?epochs/s
Epoch 1/10
0/938           ETA: ?s -
Epoch 2/10
0/938           ETA: ?s -
Epoch 3/10
0/938           ETA: ?s -
Epoch 4/10
0/938           ETA: ?s -
Epoch 5/10
0/938           ETA: ?s -
Epoch 6/10
0/938           ETA: ?s -
Epoch 7/10
0/938           ETA: ?s -
Epoch 8/10
0/938           ETA: ?s -
Epoch 9/10
0/938           ETA: ?s -
Epoch 10/10
0/938           ETA: ?s -
<keras.callbacks.History at 0x7f4a8d35aed0>

Di bawah ini adalah output yang diharapkan ketika Anda menjalankan sel di atas

# TQDMProgressBar() also works with evaluate()
model.evaluate(x_test, y_test, batch_size=64, callbacks=[tqdm_callback], verbose=0)

0/157           ETA: ?s - Evaluating
[0.06689586490392685, 0.9805999994277954]

Di bawah ini adalah output yang diharapkan ketika Anda menjalankan sel di atas