AlexNet系列 1：利用 Tensorflow 实现模型代码

 import tensorflow as tf

    
  
    
 import model
    
 import utils
    
 import images
    
  
    
  
    
 def get_loss(result, y):
    
     cross_entropy = tf.nn.sigmoid_cross_entropy_with_logits(logits=result, labels=y)
    
     return tf.reduce_mean(cross_entropy)
    
  
    
  
    
 def get_optimizer(loss):
    
     train_variables = tf.trainable_variables()
    
     optimizer = tf.train.AdamOptimizer(learni