TensorFlow 莫烦视频学习笔记例子二（一）

注释链接

所有代码

# -*- coding: utf-8 -*-
"""
Created on Wed Apr 19 12:30:49 2017

@author: lg

同济大学B406
"""

import tensorflow as tf
import numpy as np

x_data=np.random.rand(100).astype(np.float32)
y_data=x_data*0.1+0.3

Weights=tf.Variable(tf.random_uniform([1],-1.0,1.0))

biases=tf.Variable(tf.zeros([1]))

y=Weights*x_data+biases

loss=tf.reduce_mean(tf.square(y-y_data))

optimizer=tf.train.GradientDescentOptimizer(0.5)

train=optimizer.minimize(loss)

init=tf.initialize_all_variables()

sess=tf.Session()

sess.run(init)

for step in range(1001):
    sess.run(train)
    if step%20==0:
        print(step,sess.run(Weights),sess.run(biases))