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#tensorflow | ||
#tf14_Tensorboard.py | ||
import tensorflow as tf | ||
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def add_layer(inputs,in_size,out_size,activation_function=None): | ||
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# add one more layer and return the output of this layer | ||
with tf.name_scope('layer'): | ||
with tf.name_scope('weights'): | ||
Weights=tf.Variable(tf.random_normal([in_size,out_size]),name='W') | ||
with tf.name_scope('biases'): | ||
biases=tf.Variable(tf.zeros([1,out_size])+0.1,name='b') | ||
with tf.name_scope('Wx_plus_b'): | ||
Wx_plus_b=tf.add(tf.matmul(inputs,Weights),biases) | ||
if activation_function is None: | ||
outputs=Wx_plus_b | ||
else: | ||
outputs=activation_function(Wx_plus_b,) | ||
return outputs | ||
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# define placeholder for inputs to network | ||
with tf.name_scope('inputs'): | ||
xs=tf.placeholder(tf.float32,[None,1],name='x_input') | ||
ys=tf.placeholder(tf.float32,[None,1],name='y_input') | ||
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#add hidden layer | ||
l1 = add_layer(xs,1,10,activation_function=tf.nn.relu) | ||
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#add output layer | ||
prediction=add_layer(l1,10,1,activation_function=None) | ||
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# the error between prediciton and real data | ||
with tf.name_scope('loss'): | ||
loss=tf.reduce_mean(tf.reduce_sum(tf.square(ys-prediction), | ||
reduction_indices=[1])) | ||
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with tf.name_scope('train'): | ||
train_step=tf.train.GradientDescentOptimizer(0.1).minimize(loss) | ||
sess=tf.Session() | ||
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# tf.train.SummaryWriter soon be deprecated, use following | ||
if int((tf.__version__).split('.')[1]) < 12 and int((tf.__version__).split('.')[0]) < 1: # tensorflow version < 0.12 | ||
writer = tf.train.SummaryWriter('logs/', sess.graph) | ||
else: # tensorflow version >= 0.12 | ||
writer = tf.summary.FileWriter("logs/", sess.graph) | ||
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# tf.initialize_all_variables() no long valid from | ||
# 2017-03-02 if using tensorflow >= 0.12 | ||
if int((tf.__version__).split('.')[1]) < 12 and int((tf.__version__).split('.')[0]) < 1: | ||
init = tf.initialize_all_variables() | ||
else: | ||
init = tf.global_variables_initializer() | ||
sess.run(init) | ||
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##''' | ||
##enter cmd | ||
##C:\Users\Administrator\AppData\Local\Programs\Python\Python35\Scripts>tensorboard --logdir='C:\DATA\Data_Katychou\Python\Tensorflow\logs\' | ||
##Starting TensorBoard b'47' at http://0.0.0.0:6006 | ||
##http://localhost:6006 | ||
##(Press CTRL+C to quit) | ||
##''' | ||
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