TensorFlow.org'da görüntüleyin | Google Colab'da çalıştırın | Kaynağı GitHub'da görüntüleyin | Not defterini indir |
"En iyi" modeli veya model ağırlıklarını/parametrelerini sürekli olarak kaydetmenin birçok faydası vardır. Bunlar, eğitim ilerlemesini izleyebilmeyi ve kaydedilmiş modelleri farklı kaydedilmiş durumlardan yükleyebilmeyi içerir.
TensorFlow 1'de, tf.estimator.Estimator
API'leri ile eğitim/doğrulama sırasında kontrol noktası kaydetmeyi yapılandırmak için tf.estimator.RunConfig içinde bir zamanlama belirtir veya tf.estimator.RunConfig
tf.estimator.CheckpointSaverHook
kullanırsınız. Bu kılavuz, bu iş akışından TensorFlow 2 Keras API'lerine nasıl geçiş yapılacağını gösterir.
TensorFlow 2'de tf.keras.callbacks.ModelCheckpoint
çeşitli şekillerde yapılandırabilirsiniz:
- "en iyi" sürümü,
save_best_only=True
parametresini kullanarak izlenen bir metriğe göre kaydedin; buradamonitor
, örneğin,'loss'
,'val_loss'
,'accuracy', or
'val_accuracy'`. - Sürekli olarak belirli bir frekansta kaydedin (
save_freq
argümanını kullanarak). -
save_weights_only
ayarınıTrue
olarak ayarlayarak ağırlıkları/parametreleri yalnızca tüm model yerine kaydedin.
Daha fazla ayrıntı için, Modelleri kaydet ve yükle öğreticisindeki tf.keras.callbacks.ModelCheckpoint
API belgelerine ve Eğitim sırasında denetim noktalarını kaydet bölümüne bakın. Keras modellerini kaydet ve yükle kılavuzundaki TF Kontrol Noktası biçimi bölümünde Kontrol Noktası biçimi hakkında daha fazla bilgi edinin. Ek olarak, hata toleransı eklemek için manuel kontrol noktası için tf.keras.callbacks.BackupAndRestore
veya tf.train.Checkpoint
kullanabilirsiniz. Hata toleransı geçiş kılavuzunda daha fazla bilgi edinin.
Keras geri aramaları , yerleşik Model.fit
/ Model.evaluate
/ Model.predict
API'lerinde eğitim/değerlendirme/tahmin sırasında farklı noktalarda çağrılan nesnelerdir. Kılavuzun sonundaki Sonraki adımlar bölümünde daha fazla bilgi edinin.
Kurmak
Gösteri amacıyla içe aktarma ve basit bir veri kümesiyle başlayın:
import tensorflow.compat.v1 as tf1
import tensorflow as tf
import numpy as np
import tempfile
mnist = tf.keras.datasets.mnist
(x_train, y_train),(x_test, y_test) = mnist.load_data()
x_train, x_test = x_train / 255.0, x_test / 255.0
-yer tutucu2 l10n-yerDownloading data from https://storage.googleapis.com/tensorflow/tf-keras-datasets/mnist.npz 11493376/11490434 [==============================] - 0s 0us/step 11501568/11490434 [==============================] - 0s 0us/step
TensorFlow 1: tf.estimator API'leri ile kontrol noktalarını kaydedin
Bu TensorFlow 1 örneği, tf.estimator.Estimator
API'leri ile eğitim/değerlendirme sırasında her adımda kontrol noktalarını kaydetmek için tf.estimator.RunConfig
nasıl yapılandırılacağını gösterir:
feature_columns = [tf1.feature_column.numeric_column("x", shape=[28, 28])]
config = tf1.estimator.RunConfig(save_summary_steps=1,
save_checkpoints_steps=1)
path = tempfile.mkdtemp()
classifier = tf1.estimator.DNNClassifier(
feature_columns=feature_columns,
hidden_units=[256, 32],
optimizer=tf1.train.AdamOptimizer(0.001),
n_classes=10,
dropout=0.2,
model_dir=path,
config = config
)
train_input_fn = tf1.estimator.inputs.numpy_input_fn(
x={"x": x_train},
y=y_train.astype(np.int32),
num_epochs=10,
batch_size=50,
shuffle=True,
)
test_input_fn = tf1.estimator.inputs.numpy_input_fn(
x={"x": x_test},
y=y_test.astype(np.int32),
num_epochs=10,
shuffle=False
)
train_spec = tf1.estimator.TrainSpec(input_fn=train_input_fn, max_steps=10)
eval_spec = tf1.estimator.EvalSpec(input_fn=test_input_fn,
steps=10,
throttle_secs=0)
tf1.estimator.train_and_evaluate(estimator=classifier,
train_spec=train_spec,
eval_spec=eval_spec)
INFO:tensorflow:Using config: {'_model_dir': '/tmp/tmplrkjo9in', '_tf_random_seed': None, '_save_summary_steps': 1, '_save_checkpoints_steps': 1, '_save_checkpoints_secs': None, '_session_config': allow_soft_placement: true graph_options { rewrite_options { meta_optimizer_iterations: ONE } } , '_keep_checkpoint_max': 5, '_keep_checkpoint_every_n_hours': 10000, '_log_step_count_steps': 100, '_train_distribute': None, '_device_fn': None, '_protocol': None, '_eval_distribute': None, '_experimental_distribute': None, '_experimental_max_worker_delay_secs': None, '_session_creation_timeout_secs': 7200, '_checkpoint_save_graph_def': True, '_service': None, '_cluster_spec': ClusterSpec({}), '_task_type': 'worker', '_task_id': 0, '_global_id_in_cluster': 0, '_master': '', '_evaluation_master': '', '_is_chief': True, '_num_ps_replicas': 0, '_num_worker_replicas': 1} WARNING:tensorflow:From /tmp/ipykernel_20296/3980459272.py:18: The name tf.estimator.inputs is deprecated. Please use tf.compat.v1.estimator.inputs instead. WARNING:tensorflow:From /tmp/ipykernel_20296/3980459272.py:18: The name tf.estimator.inputs.numpy_input_fn is deprecated. Please use tf.compat.v1.estimator.inputs.numpy_input_fn instead. INFO:tensorflow:Not using Distribute Coordinator. INFO:tensorflow:Running training and evaluation locally (non-distributed). INFO:tensorflow:Start train and evaluate loop. The evaluate will happen after every checkpoint. Checkpoint frequency is determined based on RunConfig arguments: save_checkpoints_steps 1 or save_checkpoints_secs None. WARNING:tensorflow:From /tmpfs/src/tf_docs_env/lib/python3.7/site-packages/tensorflow/python/training/training_util.py:397: Variable.initialized_value (from tensorflow.python.ops.variables) is deprecated and will be removed in a future version. Instructions for updating: Use Variable.read_value. Variables in 2.X are initialized automatically both in eager and graph (inside tf.defun) contexts. WARNING:tensorflow:From /tmpfs/src/tf_docs_env/lib/python3.7/site-packages/tensorflow_estimator/python/estimator/inputs/queues/feeding_queue_runner.py:65: QueueRunner.__init__ (from tensorflow.python.training.queue_runner_impl) is deprecated and will be removed in a future version. Instructions for updating: To construct input pipelines, use the `tf.data` module. WARNING:tensorflow:From /tmpfs/src/tf_docs_env/lib/python3.7/site-packages/tensorflow_estimator/python/estimator/inputs/queues/feeding_functions.py:491: add_queue_runner (from tensorflow.python.training.queue_runner_impl) is deprecated and will be removed in a future version. Instructions for updating: To construct input pipelines, use the `tf.data` module. INFO:tensorflow:Calling model_fn. INFO:tensorflow:Done calling model_fn. INFO:tensorflow:Create CheckpointSaverHook. INFO:tensorflow:Graph was finalized. INFO:tensorflow:Running local_init_op. INFO:tensorflow:Done running local_init_op. WARNING:tensorflow:From /tmpfs/src/tf_docs_env/lib/python3.7/site-packages/tensorflow/python/training/monitored_session.py:914: start_queue_runners (from tensorflow.python.training.queue_runner_impl) is deprecated and will be removed in a future version. Instructions for updating: To construct input pipelines, use the `tf.data` module. INFO:tensorflow:Calling checkpoint listeners before saving checkpoint 0... INFO:tensorflow:Saving checkpoints for 0 into /tmp/tmplrkjo9in/model.ckpt. INFO:tensorflow:Calling checkpoint listeners after saving checkpoint 0... INFO:tensorflow:Calling checkpoint listeners before saving checkpoint 1... INFO:tensorflow:Saving checkpoints for 1 into /tmp/tmplrkjo9in/model.ckpt. INFO:tensorflow:Calling checkpoint listeners after saving checkpoint 1... INFO:tensorflow:Calling model_fn. INFO:tensorflow:Done calling model_fn. INFO:tensorflow:Starting evaluation at 2022-01-14T02:28:47 INFO:tensorflow:Graph was finalized. INFO:tensorflow:Restoring parameters from /tmp/tmplrkjo9in/model.ckpt-1 INFO:tensorflow:Running local_init_op. INFO:tensorflow:Done running local_init_op. INFO:tensorflow:Evaluation [1/10] INFO:tensorflow:Evaluation [2/10] INFO:tensorflow:Evaluation [3/10] INFO:tensorflow:Evaluation [4/10] INFO:tensorflow:Evaluation [5/10] INFO:tensorflow:Evaluation [6/10] INFO:tensorflow:Evaluation [7/10] INFO:tensorflow:Evaluation [8/10] INFO:tensorflow:Evaluation [9/10] INFO:tensorflow:Evaluation [10/10] INFO:tensorflow:Inference Time : 0.26374s INFO:tensorflow:Finished evaluation at 2022-01-14-02:28:47 INFO:tensorflow:Saving dict for global step 1: accuracy = 0.1765625, average_loss = 2.2546134, global_step = 1, loss = 288.5905 INFO:tensorflow:Saving 'checkpoint_path' summary for global step 1: /tmp/tmplrkjo9in/model.ckpt-1 INFO:tensorflow:loss = 118.3231, step = 0 INFO:tensorflow:Calling checkpoint listeners before saving checkpoint 2... INFO:tensorflow:Saving checkpoints for 2 into /tmp/tmplrkjo9in/model.ckpt. INFO:tensorflow:Calling checkpoint listeners after saving checkpoint 2... INFO:tensorflow:Calling model_fn. INFO:tensorflow:Done calling model_fn. INFO:tensorflow:Starting evaluation at 2022-01-14T02:28:48 INFO:tensorflow:Graph was finalized. INFO:tensorflow:Restoring parameters from /tmp/tmplrkjo9in/model.ckpt-2 INFO:tensorflow:Running local_init_op. INFO:tensorflow:Done running local_init_op. INFO:tensorflow:Evaluation [1/10] INFO:tensorflow:Evaluation [2/10] INFO:tensorflow:Evaluation [3/10] INFO:tensorflow:Evaluation [4/10] INFO:tensorflow:Evaluation [5/10] INFO:tensorflow:Evaluation [6/10] INFO:tensorflow:Evaluation [7/10] INFO:tensorflow:Evaluation [8/10] INFO:tensorflow:Evaluation [9/10] INFO:tensorflow:Evaluation [10/10] INFO:tensorflow:Inference Time : 0.36662s INFO:tensorflow:Finished evaluation at 2022-01-14-02:28:48 INFO:tensorflow:Saving dict for global step 2: accuracy = 0.2859375, average_loss = 2.1868849, global_step = 2, loss = 279.92126 INFO:tensorflow:Saving 'checkpoint_path' summary for global step 2: /tmp/tmplrkjo9in/model.ckpt-2 INFO:tensorflow:Calling checkpoint listeners before saving checkpoint 3... INFO:tensorflow:Saving checkpoints for 3 into /tmp/tmplrkjo9in/model.ckpt. INFO:tensorflow:Calling checkpoint listeners after saving checkpoint 3... INFO:tensorflow:Calling model_fn. INFO:tensorflow:Done calling model_fn. INFO:tensorflow:Starting evaluation at 2022-01-14T02:28:48 INFO:tensorflow:Graph was finalized. INFO:tensorflow:Restoring parameters from /tmp/tmplrkjo9in/model.ckpt-3 INFO:tensorflow:Running local_init_op. INFO:tensorflow:Done running local_init_op. INFO:tensorflow:Evaluation [1/10] INFO:tensorflow:Evaluation [2/10] INFO:tensorflow:Evaluation [3/10] INFO:tensorflow:Evaluation [4/10] INFO:tensorflow:Evaluation [5/10] INFO:tensorflow:Evaluation [6/10] INFO:tensorflow:Evaluation [7/10] INFO:tensorflow:Evaluation [8/10] INFO:tensorflow:Evaluation [9/10] INFO:tensorflow:Evaluation [10/10] INFO:tensorflow:Inference Time : 0.22792s INFO:tensorflow:Finished evaluation at 2022-01-14-02:28:48 INFO:tensorflow:Saving dict for global step 3: accuracy = 0.35078126, average_loss = 2.1220195, global_step = 3, loss = 271.6185 INFO:tensorflow:Saving 'checkpoint_path' summary for global step 3: /tmp/tmplrkjo9in/model.ckpt-3 INFO:tensorflow:Calling checkpoint listeners before saving checkpoint 4... INFO:tensorflow:Saving checkpoints for 4 into /tmp/tmplrkjo9in/model.ckpt. INFO:tensorflow:Calling checkpoint listeners after saving checkpoint 4... INFO:tensorflow:Calling model_fn. INFO:tensorflow:Done calling model_fn. INFO:tensorflow:Starting evaluation at 2022-01-14T02:28:49 INFO:tensorflow:Graph was finalized. INFO:tensorflow:Restoring parameters from /tmp/tmplrkjo9in/model.ckpt-4 INFO:tensorflow:Running local_init_op. INFO:tensorflow:Done running local_init_op. INFO:tensorflow:Evaluation [1/10] INFO:tensorflow:Evaluation [2/10] INFO:tensorflow:Evaluation [3/10] INFO:tensorflow:Evaluation [4/10] INFO:tensorflow:Evaluation [5/10] INFO:tensorflow:Evaluation [6/10] INFO:tensorflow:Evaluation [7/10] INFO:tensorflow:Evaluation [8/10] INFO:tensorflow:Evaluation [9/10] INFO:tensorflow:Evaluation [10/10] INFO:tensorflow:Inference Time : 0.22387s INFO:tensorflow:Finished evaluation at 2022-01-14-02:28:49 INFO:tensorflow:Saving dict for global step 4: accuracy = 0.40234375, average_loss = 2.0655982, global_step = 4, loss = 264.39658 INFO:tensorflow:Saving 'checkpoint_path' summary for global step 4: /tmp/tmplrkjo9in/model.ckpt-4 INFO:tensorflow:Calling checkpoint listeners before saving checkpoint 5... INFO:tensorflow:Saving checkpoints for 5 into /tmp/tmplrkjo9in/model.ckpt. WARNING:tensorflow:From /tmpfs/src/tf_docs_env/lib/python3.7/site-packages/tensorflow/python/training/saver.py:1054: remove_checkpoint (from tensorflow.python.training.checkpoint_management) is deprecated and will be removed in a future version. Instructions for updating: Use standard file APIs to delete files with this prefix. INFO:tensorflow:Calling checkpoint listeners after saving checkpoint 5... INFO:tensorflow:Calling model_fn. INFO:tensorflow:Done calling model_fn. INFO:tensorflow:Starting evaluation at 2022-01-14T02:28:49 INFO:tensorflow:Graph was finalized. INFO:tensorflow:Restoring parameters from /tmp/tmplrkjo9in/model.ckpt-5 INFO:tensorflow:Running local_init_op. INFO:tensorflow:Done running local_init_op. INFO:tensorflow:Evaluation [1/10] INFO:tensorflow:Evaluation [2/10] INFO:tensorflow:Evaluation [3/10] INFO:tensorflow:Evaluation [4/10] INFO:tensorflow:Evaluation [5/10] INFO:tensorflow:Evaluation [6/10] INFO:tensorflow:Evaluation [7/10] INFO:tensorflow:Evaluation [8/10] INFO:tensorflow:Evaluation [9/10] INFO:tensorflow:Evaluation [10/10] INFO:tensorflow:Inference Time : 0.22548s INFO:tensorflow:Finished evaluation at 2022-01-14-02:28:49 INFO:tensorflow:Saving dict for global step 5: accuracy = 0.42421874, average_loss = 2.0072064, global_step = 5, loss = 256.92242 INFO:tensorflow:Saving 'checkpoint_path' summary for global step 5: /tmp/tmplrkjo9in/model.ckpt-5 INFO:tensorflow:Calling checkpoint listeners before saving checkpoint 6... INFO:tensorflow:Saving checkpoints for 6 into /tmp/tmplrkjo9in/model.ckpt. INFO:tensorflow:Calling checkpoint listeners after saving checkpoint 6... INFO:tensorflow:Calling model_fn. INFO:tensorflow:Done calling model_fn. INFO:tensorflow:Starting evaluation at 2022-01-14T02:28:50 INFO:tensorflow:Graph was finalized. INFO:tensorflow:Restoring parameters from /tmp/tmplrkjo9in/model.ckpt-6 INFO:tensorflow:Running local_init_op. INFO:tensorflow:Done running local_init_op. INFO:tensorflow:Evaluation [1/10] INFO:tensorflow:Evaluation [2/10] INFO:tensorflow:Evaluation [3/10] INFO:tensorflow:Evaluation [4/10] INFO:tensorflow:Evaluation [5/10] INFO:tensorflow:Evaluation [6/10] INFO:tensorflow:Evaluation [7/10] INFO:tensorflow:Evaluation [8/10] INFO:tensorflow:Evaluation [9/10] INFO:tensorflow:Evaluation [10/10] INFO:tensorflow:Inference Time : 0.22806s INFO:tensorflow:Finished evaluation at 2022-01-14-02:28:50 INFO:tensorflow:Saving dict for global step 6: accuracy = 0.43984374, average_loss = 1.9473753, global_step = 6, loss = 249.26404 INFO:tensorflow:Saving 'checkpoint_path' summary for global step 6: /tmp/tmplrkjo9in/model.ckpt-6 INFO:tensorflow:Calling checkpoint listeners before saving checkpoint 7... INFO:tensorflow:Saving checkpoints for 7 into /tmp/tmplrkjo9in/model.ckpt. INFO:tensorflow:Calling checkpoint listeners after saving checkpoint 7... INFO:tensorflow:Calling model_fn. INFO:tensorflow:Done calling model_fn. INFO:tensorflow:Starting evaluation at 2022-01-14T02:28:50 INFO:tensorflow:Graph was finalized. INFO:tensorflow:Restoring parameters from /tmp/tmplrkjo9in/model.ckpt-7 INFO:tensorflow:Running local_init_op. INFO:tensorflow:Done running local_init_op. INFO:tensorflow:Evaluation [1/10] INFO:tensorflow:Evaluation [2/10] INFO:tensorflow:Evaluation [3/10] INFO:tensorflow:Evaluation [4/10] INFO:tensorflow:Evaluation [5/10] INFO:tensorflow:Evaluation [6/10] INFO:tensorflow:Evaluation [7/10] INFO:tensorflow:Evaluation [8/10] INFO:tensorflow:Evaluation [9/10] INFO:tensorflow:Evaluation [10/10] INFO:tensorflow:Inference Time : 0.23091s INFO:tensorflow:Finished evaluation at 2022-01-14-02:28:50 INFO:tensorflow:Saving dict for global step 7: accuracy = 0.44296876, average_loss = 1.8903366, global_step = 7, loss = 241.96309 INFO:tensorflow:Saving 'checkpoint_path' summary for global step 7: /tmp/tmplrkjo9in/model.ckpt-7 INFO:tensorflow:Calling checkpoint listeners before saving checkpoint 8... INFO:tensorflow:Saving checkpoints for 8 into /tmp/tmplrkjo9in/model.ckpt. INFO:tensorflow:Calling checkpoint listeners after saving checkpoint 8... INFO:tensorflow:Calling model_fn. INFO:tensorflow:Done calling model_fn. INFO:tensorflow:Starting evaluation at 2022-01-14T02:28:51 INFO:tensorflow:Graph was finalized. INFO:tensorflow:Restoring parameters from /tmp/tmplrkjo9in/model.ckpt-8 INFO:tensorflow:Running local_init_op. INFO:tensorflow:Done running local_init_op. INFO:tensorflow:Evaluation [1/10] INFO:tensorflow:Evaluation [2/10] INFO:tensorflow:Evaluation [3/10] INFO:tensorflow:Evaluation [4/10] INFO:tensorflow:Evaluation [5/10] INFO:tensorflow:Evaluation [6/10] INFO:tensorflow:Evaluation [7/10] INFO:tensorflow:Evaluation [8/10] INFO:tensorflow:Evaluation [9/10] INFO:tensorflow:Evaluation [10/10] INFO:tensorflow:Inference Time : 0.22453s INFO:tensorflow:Finished evaluation at 2022-01-14-02:28:51 INFO:tensorflow:Saving dict for global step 8: accuracy = 0.44453126, average_loss = 1.8294731, global_step = 8, loss = 234.17256 INFO:tensorflow:Saving 'checkpoint_path' summary for global step 8: /tmp/tmplrkjo9in/model.ckpt-8 INFO:tensorflow:Calling checkpoint listeners before saving checkpoint 9... INFO:tensorflow:Saving checkpoints for 9 into /tmp/tmplrkjo9in/model.ckpt. INFO:tensorflow:Calling checkpoint listeners after saving checkpoint 9... INFO:tensorflow:Calling model_fn. INFO:tensorflow:Done calling model_fn. INFO:tensorflow:Starting evaluation at 2022-01-14T02:28:51 INFO:tensorflow:Graph was finalized. INFO:tensorflow:Restoring parameters from /tmp/tmplrkjo9in/model.ckpt-9 INFO:tensorflow:Running local_init_op. INFO:tensorflow:Done running local_init_op. INFO:tensorflow:Evaluation [1/10] INFO:tensorflow:Evaluation [2/10] INFO:tensorflow:Evaluation [3/10] INFO:tensorflow:Evaluation [4/10] INFO:tensorflow:Evaluation [5/10] INFO:tensorflow:Evaluation [6/10] INFO:tensorflow:Evaluation [7/10] INFO:tensorflow:Evaluation [8/10] INFO:tensorflow:Evaluation [9/10] INFO:tensorflow:Evaluation [10/10] INFO:tensorflow:Inference Time : 0.22271s INFO:tensorflow:Finished evaluation at 2022-01-14-02:28:51 INFO:tensorflow:Saving dict for global step 9: accuracy = 0.47734374, average_loss = 1.7674354, global_step = 9, loss = 226.23174 INFO:tensorflow:Saving 'checkpoint_path' summary for global step 9: /tmp/tmplrkjo9in/model.ckpt-9 INFO:tensorflow:Calling checkpoint listeners before saving checkpoint 10... INFO:tensorflow:Saving checkpoints for 10 into /tmp/tmplrkjo9in/model.ckpt. INFO:tensorflow:Calling checkpoint listeners after saving checkpoint 10... INFO:tensorflow:Calling model_fn. INFO:tensorflow:Done calling model_fn. INFO:tensorflow:Starting evaluation at 2022-01-14T02:28:52 INFO:tensorflow:Graph was finalized. INFO:tensorflow:Restoring parameters from /tmp/tmplrkjo9in/model.ckpt-10 INFO:tensorflow:Running local_init_op. INFO:tensorflow:Done running local_init_op. INFO:tensorflow:Evaluation [1/10] INFO:tensorflow:Evaluation [2/10] INFO:tensorflow:Evaluation [3/10] INFO:tensorflow:Evaluation [4/10] INFO:tensorflow:Evaluation [5/10] INFO:tensorflow:Evaluation [6/10] INFO:tensorflow:Evaluation [7/10] INFO:tensorflow:Evaluation [8/10] INFO:tensorflow:Evaluation [9/10] INFO:tensorflow:Evaluation [10/10] INFO:tensorflow:Inference Time : 0.38483s INFO:tensorflow:Finished evaluation at 2022-01-14-02:28:52 INFO:tensorflow:Saving dict for global step 10: accuracy = 0.5140625, average_loss = 1.7108486, global_step = 10, loss = 218.98862 INFO:tensorflow:Saving 'checkpoint_path' summary for global step 10: /tmp/tmplrkjo9in/model.ckpt-10 INFO:tensorflow:Loss for final step: 96.2236. ({'accuracy': 0.5140625, 'average_loss': 1.7108486, 'loss': 218.98862, 'global_step': 10}, [])yer tutucu5 l10n-yer
%ls {classifier.model_dir}
checkpoint eval/ events.out.tfevents.1642127326.kokoro-gcp-ubuntu-prod-837339153 graph.pbtxt model.ckpt-10.data-00000-of-00001 model.ckpt-10.index model.ckpt-10.meta model.ckpt-6.data-00000-of-00001 model.ckpt-6.index model.ckpt-6.meta model.ckpt-7.data-00000-of-00001 model.ckpt-7.index model.ckpt-7.meta model.ckpt-8.data-00000-of-00001 model.ckpt-8.index model.ckpt-8.meta model.ckpt-9.data-00000-of-00001 model.ckpt-9.index model.ckpt-9.meta
TensorFlow 2: Model.fit için bir Keras geri aramasıyla kontrol noktalarını kaydedin
TensorFlow 2'de, eğitim/değerlendirme için yerleşik Model.fit
(veya Model.evaluate
) Model.fit
, tf.keras.callbacks.ModelCheckpoint
yapılandırabilir ve ardından callbacks
(veya Model.evaluate
). (Yerleşik yöntemler kılavuzuyla Eğitim ve değerlendirme'deki API belgelerinde ve Geri aramaları kullanma bölümünde daha fazla bilgi edinin.)
Aşağıdaki örnekte, kontrol noktalarını geçici bir dizinde depolamak için bir tf.keras.callbacks.ModelCheckpoint
geri çağrısı kullanacaksınız:
def create_model():
return tf.keras.models.Sequential([
tf.keras.layers.Flatten(input_shape=(28, 28)),
tf.keras.layers.Dense(512, activation='relu'),
tf.keras.layers.Dropout(0.2),
tf.keras.layers.Dense(10, activation='softmax')
])
model = create_model()
model.compile(optimizer='adam',
loss='sparse_categorical_crossentropy',
metrics=['accuracy'],
steps_per_execution=10)
log_dir = tempfile.mkdtemp()
model_checkpoint_callback = tf.keras.callbacks.ModelCheckpoint(
filepath=log_dir)
model.fit(x=x_train,
y=y_train,
epochs=10,
validation_data=(x_test, y_test),
callbacks=[model_checkpoint_callback])
Epoch 1/10 1840/1875 [============================>.] - ETA: 0s - loss: 0.2224 - accuracy: 0.9348 2022-01-14 02:28:56.714889: W tensorflow/python/util/util.cc:368] Sets are not currently considered sequences, but this may change in the future, so consider avoiding using them. INFO:tensorflow:Assets written to: /tmp/tmpb85suru4/assets 1875/1875 [==============================] - 4s 2ms/step - loss: 0.2208 - accuracy: 0.9354 - val_loss: 0.1132 - val_accuracy: 0.9669 Epoch 2/10 1870/1875 [============================>.] - ETA: 0s - loss: 0.0961 - accuracy: 0.9706INFO:tensorflow:Assets written to: /tmp/tmpb85suru4/assets 1875/1875 [==============================] - 3s 1ms/step - loss: 0.0962 - accuracy: 0.9706 - val_loss: 0.0784 - val_accuracy: 0.9753 Epoch 3/10 1860/1875 [============================>.] - ETA: 0s - loss: 0.0696 - accuracy: 0.9781INFO:tensorflow:Assets written to: /tmp/tmpb85suru4/assets 1875/1875 [==============================] - 3s 2ms/step - loss: 0.0695 - accuracy: 0.9782 - val_loss: 0.0684 - val_accuracy: 0.9788 Epoch 4/10 1860/1875 [============================>.] - ETA: 0s - loss: 0.0529 - accuracy: 0.9826INFO:tensorflow:Assets written to: /tmp/tmpb85suru4/assets 1875/1875 [==============================] - 3s 1ms/step - loss: 0.0531 - accuracy: 0.9826 - val_loss: 0.0671 - val_accuracy: 0.9791 Epoch 5/10 1860/1875 [============================>.] - ETA: 0s - loss: 0.0423 - accuracy: 0.9860INFO:tensorflow:Assets written to: /tmp/tmpb85suru4/assets 1875/1875 [==============================] - 3s 1ms/step - loss: 0.0424 - accuracy: 0.9860 - val_loss: 0.0772 - val_accuracy: 0.9757 Epoch 6/10 1860/1875 [============================>.] - ETA: 0s - loss: 0.0345 - accuracy: 0.9888INFO:tensorflow:Assets written to: /tmp/tmpb85suru4/assets 1875/1875 [==============================] - 3s 1ms/step - loss: 0.0345 - accuracy: 0.9888 - val_loss: 0.0669 - val_accuracy: 0.9811 Epoch 7/10 1860/1875 [============================>.] - ETA: 0s - loss: 0.0314 - accuracy: 0.9895INFO:tensorflow:Assets written to: /tmp/tmpb85suru4/assets 1875/1875 [==============================] - 3s 1ms/step - loss: 0.0313 - accuracy: 0.9895 - val_loss: 0.0718 - val_accuracy: 0.9800 Epoch 8/10 1870/1875 [============================>.] - ETA: 0s - loss: 0.0298 - accuracy: 0.9899INFO:tensorflow:Assets written to: /tmp/tmpb85suru4/assets 1875/1875 [==============================] - 3s 1ms/step - loss: 0.0298 - accuracy: 0.9899 - val_loss: 0.0632 - val_accuracy: 0.9825 Epoch 9/10 1860/1875 [============================>.] - ETA: 0s - loss: 0.0230 - accuracy: 0.9925INFO:tensorflow:Assets written to: /tmp/tmpb85suru4/assets 1875/1875 [==============================] - 3s 1ms/step - loss: 0.0231 - accuracy: 0.9924 - val_loss: 0.0748 - val_accuracy: 0.9800 Epoch 10/10 1860/1875 [============================>.] - ETA: 0s - loss: 0.0220 - accuracy: 0.9920INFO:tensorflow:Assets written to: /tmp/tmpb85suru4/assets 1875/1875 [==============================] - 3s 1ms/step - loss: 0.0222 - accuracy: 0.9920 - val_loss: 0.0703 - val_accuracy: 0.9825 <keras.callbacks.History at 0x7f638c204410>yer tutucu9 l10n-yer
%ls {model_checkpoint_callback.filepath}
assets/ keras_metadata.pb saved_model.pb variables/
Sonraki adımlar
Şurada kontrol noktası oluşturma hakkında daha fazla bilgi edinin:
- API belgeleri:
tf.keras.callbacks.ModelCheckpoint
- Öğretici: Modelleri kaydedin ve yükleyin ( Eğitim sırasında kontrol noktalarını kaydet bölümü)
- Kılavuz: Keras modellerini kaydedin ve yükleyin ( TF Kontrol Noktası biçimi bölümü)
Geri aramalar hakkında daha fazla bilgi edinin:
- API belgeleri:
tf.keras.callbacks.Callback
- Kılavuz: Kendi geri aramalarınızı yazma
- Kılavuz: Yerleşik yöntemlerle eğitim ve değerlendirme ( Geri aramaları kullanma bölümü)
Ayrıca, taşımayla ilgili aşağıdaki kaynakları da faydalı bulabilirsiniz:
- Hata toleransı geçiş kılavuzu :
tf.keras.callbacks.BackupAndRestore
içinModel.fit
veya özel bir eğitim döngüsü içintf.train.Checkpoint
vetf.train.CheckpointManager
API'leri - Erken durdurma geçiş kılavuzu :
tf.keras.callbacks.EarlyStopping
, yerleşik bir erken durdurma geri aramasıdır - TensorBoard geçiş kılavuzu : TensorBoard, metriklerin izlenmesini ve görüntülenmesini sağlar
- LoggingTensorHook ve StopAtStepHook to Keras geri aramaları geçiş kılavuzu
- SessionRunHook to Keras geri arama kılavuzu