在新版本的tensorflow 2.0中，保存/加载模型的过程要容易得多。因为Keras API的实现，一个TensorFlow的高级API。

保存一个模型: 请查阅相关文档以作参考: https://www.tensorflow.org/versions/r2.0/api_docs/python/tf/keras/models/save_model

tf.keras.models.save_model(model_name, filepath, save_format)

加载一个模型:

https://www.tensorflow.org/versions/r2.0/api_docs/python/tf/keras/models/load_model

model = tf.keras.models.load_model(filepath)

对于TensorFlow版本< 0.11.0RC1:

保存的检查点包含模型中的变量值，而不是模型/图本身，这意味着当您恢复检查点时，图应该是相同的。

这里有一个线性回归的例子，其中有一个训练循环，保存变量检查点，还有一个评估部分，将恢复之前运行中保存的变量并计算预测。当然，如果你愿意，你也可以恢复变量并继续训练。

x = tf.placeholder(tf.float32)
y = tf.placeholder(tf.float32)

w = tf.Variable(tf.zeros([1, 1], dtype=tf.float32))
b = tf.Variable(tf.ones([1, 1], dtype=tf.float32))
y_hat = tf.add(b, tf.matmul(x, w))

...more setup for optimization and what not...

saver = tf.train.Saver()  # defaults to saving all variables - in this case w and b

with tf.Session() as sess:
    sess.run(tf.initialize_all_variables())
    if FLAGS.train:
        for i in xrange(FLAGS.training_steps):
            ...training loop...
            if (i + 1) % FLAGS.checkpoint_steps == 0:
                saver.save(sess, FLAGS.checkpoint_dir + 'model.ckpt',
                           global_step=i+1)
    else:
        # Here's where you're restoring the variables w and b.
        # Note that the graph is exactly as it was when the variables were
        # saved in a prior training run.
        ckpt = tf.train.get_checkpoint_state(FLAGS.checkpoint_dir)
        if ckpt and ckpt.model_checkpoint_path:
            saver.restore(sess, ckpt.model_checkpoint_path)
        else:
            ...no checkpoint found...

        # Now you can run the model to get predictions
        batch_x = ...load some data...
        predictions = sess.run(y_hat, feed_dict={x: batch_x})

下面是变量文档，涵盖了保存和恢复。这是保存程序的文档。

Tensorflow 2.6:它现在变得更简单了，你可以用两种格式保存模型

Saved_model (tf服务兼容) H5或HDF5

以两种格式保存模型:

 from tensorflow.keras import Model
 inputs = tf.keras.Input(shape=(224,224,3))
 y = tf.keras.layers.Conv2D(24, 3, activation='relu', input_shape=input_shape[1:])(inputs)
 outputs = tf.keras.layers.Dense(5, activation=tf.nn.softmax)(y)
 model = tf.keras.Model(inputs=inputs, outputs=outputs)
 model.save("saved_model/my_model") #To Save in Saved_model format
 model.save("my_model.h5") #To save model in H5 or HDF5 format

以两种格式加载模型

import tensorflow as tf
h5_model = tf.keras.models.load_model("my_model.h5") # loading model in h5 format
h5_model.summary()
saved_m = tf.keras.models.load_model("saved_model/my_model") #loading model in saved_model format
saved_m.summary()

我在版本:

tensorflow (1.13.1)
tensorflow-gpu (1.13.1)

简单的方法是

拯救策略:

model.save("model.h5")

恢复:

model = tf.keras.models.load_model("model.h5")

在新版本的tensorflow 2.0中，保存/加载模型的过程要容易得多。因为Keras API的实现，一个TensorFlow的高级API。

保存一个模型: 请查阅相关文档以作参考: https://www.tensorflow.org/versions/r2.0/api_docs/python/tf/keras/models/save_model

tf.keras.models.save_model(model_name, filepath, save_format)

加载一个模型:

https://www.tensorflow.org/versions/r2.0/api_docs/python/tf/keras/models/load_model

model = tf.keras.models.load_model(filepath)

下面是我对这两种基本情况的简单解决方案，这两种情况的不同之处在于您是想从文件加载图形还是在运行时构建它。

这个答案适用于Tensorflow 0.12+(包括1.0)。

在代码中重建图形

储蓄

graph = ... # build the graph
saver = tf.train.Saver()  # create the saver after the graph
with ... as sess:  # your session object
    saver.save(sess, 'my-model')

加载

graph = ... # build the graph
saver = tf.train.Saver()  # create the saver after the graph
with ... as sess:  # your session object
    saver.restore(sess, tf.train.latest_checkpoint('./'))
    # now you can use the graph, continue training or whatever

还从文件中加载图形

当使用这种技术时，确保所有的层/变量都显式地设置了唯一的名称。否则Tensorflow将使名称本身是唯一的，因此它们将不同于存储在文件中的名称。在前一种技术中，这不是问题，因为名称在加载和保存时都以相同的方式“损坏”。

储蓄

graph = ... # build the graph

for op in [ ... ]:  # operators you want to use after restoring the model
    tf.add_to_collection('ops_to_restore', op)

saver = tf.train.Saver()  # create the saver after the graph
with ... as sess:  # your session object
    saver.save(sess, 'my-model')

加载

with ... as sess:  # your session object
    saver = tf.train.import_meta_graph('my-model.meta')
    saver.restore(sess, tf.train.latest_checkpoint('./'))
    ops = tf.get_collection('ops_to_restore')  # here are your operators in the same order in which you saved them to the collection