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#?-*-?coding:?utf-8?-*-
“““
Created?on?Tue?May?23?16:28:24?2017
@author:?代碼醫(yī)生
@blog:http://blog.csdn.net/lijin6249
“““

import?tensorflow?as?tf
import?numpy?as?np
import?matplotlib.pyplot?as?plt

#?導(dǎo)入?MINST?數(shù)據(jù)集
from?tensorflow.examples.tutorials.mnist?import?input_data
mnist?=?input_data.read_data_sets(“/data/“?one_hot=True)

#?網(wǎng)絡(luò)模型參數(shù)
learning_rate?=?0.01
n_hidden_1?=?256?#?第一層256個(gè)節(jié)點(diǎn)
n_hidden_2?=?128?#?第二層128個(gè)節(jié)點(diǎn)
n_input?=?784?#?MNIST?data?輸入?(img?shape:?28*28)

#?占位符
x?=?tf.placeholder(“float“?[None?n_input])#輸入
y?=?x?#輸出


#學(xué)習(xí)參數(shù)
weights?=?{
????‘encoder_h1‘:?tf.Variable(tf.random_normal([n_input?n_hidden_1]))
????‘encoder_h2‘:?tf.Variable(tf.random_normal([n_hidden_1?n_hidden_2]))
????‘decoder_h1‘:?tf.Variable(tf.random_normal([n_hidden_2?n_hidden_1]))
????‘decoder_h2‘:?tf.Variable(tf.random_normal([n_hidden_1?n_input]))
}
biases?=?{
????‘encoder_b1‘:?tf.Variable(tf.zeros([n_hidden_1]))
????‘encoder_b2‘:?tf.Variable(tf.zeros([n_hidden_2]))
????‘decoder_b1‘:?tf.Variable(tf.zeros([n_hidden_1]))
????‘decoder_b2‘:?tf.Variable(tf.zeros([n_input]))
}


#?編碼
def?encoder(x):
????layer_1?=?tf.nn.sigmoid(tf.add(tf.matmul(x?weights[‘encoder_h1‘])biases[‘encoder_b1‘]))
????layer_2?=?tf.nn.sigmoid(tf.add(tf.matmul(layer_1?weights[‘encoder_h2‘])?biases[‘encoder_b2‘]))
????return?layer_2


#?解碼
def?decoder(x):
????layer_1?=?tf.nn.sigmoid(tf.add(tf.matmul(x?weights[‘decoder_h1‘])biases[‘decoder_b1‘]))
????layer_2?=?tf.nn.sigmoid(tf.add(tf.matmul(layer_1?weights[‘decoder_h2‘])biases[‘decoder_b2‘]))
????return?layer_2

#輸出的節(jié)點(diǎn)
encoder_out?=?encoder(x)
pred?=?decoder(encoder_out)

#?使用平方差為cost
cost?=?tf.reduce_mean(tf.pow(y?-?pred?2))
optimizer?=?tf.train.RMSPropOptimizer(learning_rate).minimize(cost)

#?訓(xùn)練參數(shù)
training_epochs?=?20??#一共迭代20次
batch_size?=?256?????#每次取256個(gè)樣本
display_step?=?5?????#迭代5次輸出一次信息

#?啟動(dòng)繪話
with?tf.Session()?as?sess:
????sess.run(tf.global_variables_initializer())
????
????
????total_batch?=?int(mnist.train.num_examples/batch_size)
????#?開始訓(xùn)練
????for?epoch?in?range(training_epochs):#迭代
????????
????????for?i?in?range(total_batch):
????????????batch_xs?batch_ys?=?mnist.train.next_batch(batch_size)#取數(shù)據(jù)
????????????_?c?=?sess.run([optimizer?cost]?feed_dict={x:?batch_xs})#?訓(xùn)練模型
????????if?epoch?%?display_step?==?0:#?現(xiàn)實(shí)日志信息
????????????print(“Epoch:“?‘%04d‘?%?(epoch+1)“cost=“?“{:.9f}“.format(c))

????print(“完成!“)
????
????#?測(cè)試
????correct_prediction?=?tf.equal(tf.argmax(pred?1)?tf.argmax(y?1))
????#?計(jì)算錯(cuò)誤率
????accuracy?=?tf.reduce_mean(tf.cast(correct_prediction?“float“))
????print?(“Accuracy:“?1-accuracy.eval({x:?mnist.test.images?y:?mnist.test.images}))

???

????#?可視化結(jié)果
????show_num?=?10
????reconstruction?=?sess.run(
????????pred?feed_dict={x:?mnist.test.images[:show_num]})

????f?a?=?plt.subplots(2?10?figsize=(10?2))
????for?i?in?range(show_num):
????????a[0][i].imshow(np.reshape(mnist.test.images[i]?(28?

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----

?????文件???????3325??2018-10-06?20:08??深度學(xué)習(xí)之tensorflow_代碼\10-1__自編碼.py

?????文件???????4564??2018-10-06?20:08??深度學(xué)習(xí)之tensorflow_代碼\10-2__自編碼進(jìn)階.py

?????文件???????5143??2018-10-06?20:09??深度學(xué)習(xí)之tensorflow_代碼\10-3__卷積網(wǎng)絡(luò)自編碼.py

?????文件???????4535??2018-10-06?20:09??深度學(xué)習(xí)之tensorflow_代碼\10-4__自編碼練習(xí)題.py

?????文件???????4304??2018-10-06?20:09??深度學(xué)習(xí)之tensorflow_代碼\10-5__去噪自編碼.py

?????文件???????9273??2018-10-06?20:09??深度學(xué)習(xí)之tensorflow_代碼\10-6__自編碼綜合.py

?????文件??????10065??2018-10-06?20:09??深度學(xué)習(xí)之tensorflow_代碼\10-7__分布自編碼綜合.py

?????文件???????4874??2018-10-06?20:09??深度學(xué)習(xí)之tensorflow_代碼\10-8__變分自編碼.py

?????文件???????5881??2018-10-06?20:09??深度學(xué)習(xí)之tensorflow_代碼\10-9__條件變分自編碼.py

?????文件????????870??2018-10-06?20:09??深度學(xué)習(xí)之tensorflow_代碼\11-1__tfrecodertest.py

?????文件???????1825??2018-10-06?20:09??深度學(xué)習(xí)之tensorflow_代碼\11-2__inception_resnet_v2使用.py

?????文件???????3531??2018-10-06?20:09??深度學(xué)習(xí)之tensorflow_代碼\11-3__vgg19圖片檢測(cè)使用.py

?????文件???????3714??2018-10-06?20:09??深度學(xué)習(xí)之tensorflow_代碼\11-4_object_Detection使用.py

?????文件???????7471??2018-10-06?20:09??深度學(xué)習(xí)之tensorflow_代碼\12-1__Mnistinfogan.py

?????文件???????9529??2018-10-06?20:09??深度學(xué)習(xí)之tensorflow_代碼\12-2__aegan.py

?????文件???????3924??2018-10-06?20:09??深度學(xué)習(xí)之tensorflow_代碼\12-3__wgan_gp.py

?????文件???????7574??2018-10-06?20:09??深度學(xué)習(xí)之tensorflow_代碼\12-4__mnistLSgan.py

?????文件???????5802??2018-10-06?20:09??深度學(xué)習(xí)之tensorflow_代碼\12-5__GAN-cls.py

?????文件???????2691??2018-10-06?20:09??深度學(xué)習(xí)之tensorflow_代碼\12-6__mnistEspcn.py

?????文件???????5543??2018-10-06?20:09??深度學(xué)習(xí)之tensorflow_代碼\12-7__tfrecoderSRESPCN.py

?????文件???????6940??2018-10-06?20:09??深度學(xué)習(xí)之tensorflow_代碼\12-8__resESPCN.py

?????文件??????10208??2018-10-06?20:09??深度學(xué)習(xí)之tensorflow_代碼\12-9__rsgan.py

?????文件???????2670??2018-10-06?20:01??深度學(xué)習(xí)之tensorflow_代碼\3-1__線性回歸.py

?????文件???????2748??2018-10-06?20:02??深度學(xué)習(xí)之tensorflow_代碼\3-2__通過字典類型定義輸入節(jié)點(diǎn).py

?????文件???????1558??2018-10-06?20:03??深度學(xué)習(xí)之tensorflow_代碼\3-3__直接定義輸入節(jié)點(diǎn).py

?????文件???????2698??2018-10-06?20:03??深度學(xué)習(xí)之tensorflow_代碼\3-4__通過字典類型定義學(xué)習(xí)參數(shù).py

?????文件????????663??2018-10-06?20:04??深度學(xué)習(xí)之tensorflow_代碼\4-10__get_variable配合variable_scope.py

?????文件????????980??2018-10-06?20:04??深度學(xué)習(xí)之tensorflow_代碼\4-11__get_variable配合variable_scope2.py

?????文件????????765??2018-10-06?20:04??深度學(xué)習(xí)之tensorflow_代碼\4-12__共享變量的作用域與初始化.py

?????文件???????1019??2018-10-06?20:05??深度學(xué)習(xí)之tensorflow_代碼\4-13__作用域與操作符的受限范圍.py

............此處省略96個(gè)文件信息

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