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  • 大小: 5KB
    文件類型: .py
    金幣: 2
    下載: 1 次
    發(fā)布日期: 2021-06-05
  • 語言: Python
  • 標簽: 深度學習??

資源簡介

Alex在2012年提出的alexnet網絡結構模型引爆了神經網絡的應用熱潮,并贏得了2012屆圖像識別大賽的冠軍,使得CNN成為在圖像分類上的核心算法模型。

資源截圖

代碼片段和文件信息

from?datetime?import?datetime
import?math
import?time
import?tensorflow?as?tf

batch_size?=?32
num_batches?=?100

def?print_activations(t):
????print(t.op.name‘?‘t.get_shape().as_list())

def?inference(images):
????parameters?=?[]

????with?tf.name_scope?(‘conv1‘)?as?scope:???????#卷積層1和池化層1
????????kernel?=?tf.Variable?(tf.truncated_normal?([1111364]dtype?=?tf.float32stddev?=?1e-1)name?=?‘weights‘)
????????conv?=tf.nn.conv2d(imageskernel[1441]padding?=?‘SAME‘)
????????biases?=?tf.Variable?(tf.constant(0.0shape?=?[64]dtype?=?tf.float32)trainable=?Truename?=?‘biases‘)
????????bias?=?tf.nn.bias_add(convbiases)
????????conv1=tf.nn.relu(biasname=scope)
????????print_activations(conv1)
????????parameters?+=[kernelbiases]
????????lrn1=tf.nn.lrn(conv14bias=1.0alpha=0.001/9beta=0.75name=‘lrn1‘)#LRN層
????????pool1=tf.nn.max_pool?(lrn1ksize=[1331]strides=[1221]padding=‘VALID‘name=‘pool1‘)
????????print_activations(pool1)

????with?tf.name_scope(‘conv2‘)?as?scope:?????#卷積層2和池化層2
????????kernel?=?tf.Variable(tf.truncated_normal([5?5?64?192]?dtype=tf.float32?stddev=1e-1)?name=‘weights‘)
????????conv?=?tf.nn.conv2d(pool1?kernel?[1?1?1?1]?padding=‘SAME‘)
????????biases?=?tf.Variable(tf.constant(0.0?shape=[192]?dtype=tf.float32)?trainable=Truename?=?‘biases‘)
????????bias?=?tf.nn.bias_add(conv?biases)
????????conv2?=?tf.nn.relu(bias?name=scope)
????????print_activations(conv2)
????????parameters?+=?[kernel?biases]
????????lrn2?=?tf.nn.lrn(conv2?4?bias=1.0?alpha=0.001?/?9?beta=0.75?name=‘lrn2‘)
????????pool2?=?tf.nn.max_pool(lrn2?ksize=[1?3?3?1]?strides=[1?2?2?1]?padding=‘VALID‘?name=‘pool2‘)
????????print_activations(pool2)

????with?tf.name_scope(‘conv3‘)?as?scope:??????#卷積層3
????????????kernel?=?tf.Variable(tf.truncated_normal([33192384]?dtype=tf.float32?stddev=1e-1)?name=‘weights‘)
????????????conv?=?tf.nn.conv2d(pool2?kernel?[1?11?1]?padding=‘SAME‘)
????????????biases?=?tf.Variable(tf.constant(0.0?shape=[384]?dtype=tf.float32)?trainable=Truename?=?‘biases‘)
????????????bias?=?tf.nn.bias_add(conv?biases)
????????????conv3?=?tf.nn.relu(bias?name=scope)
????????????print_activations(conv3)

????with?tf.name_scope(‘conv4‘)?as?scope:??????#卷積層4
????????????kernel?=?tf.Variable(tf.truncated_normal([3?3?384256]?dtype=tf.float32?stddev=1e-1)?name=‘weights‘)
????????????co

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