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  • 大小: 3KB
    文件類型: .py
    金幣: 1
    下載: 0 次
    發布日期: 2021-05-20
  • 語言: Python
  • 標簽: CNN??

資源簡介

使用卷積神經網絡預測波士頓房價,采用一維卷積的模式。

資源截圖

代碼片段和文件信息

#?-*-?coding:?utf-8?-*-
“““
Created?on?Tue?Sep?12?15:05:41?2017

@author:?thinkpad
“““


import?numpy?as?np
from?sklearn?import?preprocessing
import?tensorflow?as?tf
from?sklearn.datasets?import?load_boston
from?sklearn.model_selection?import?train_test_split
import?matplotlib.pyplot?as?plt
#波士頓房價數據
boston=load_boston()
x=boston.data
y=boston.target
#x_3=x[:3:6]
#x=np.column_stack([xx_3])
train_x?test_x?train_y?test_y?=?train_test_split(x?ytrain_size=0.5?random_state=33)
ss_x?=?preprocessing.StandardScaler()
train_x?=?ss_x.fit_transform(train_x)
test_x?=?ss_x.transform(test_x)
train_y?=?ss_x.fit_transform(train_y.reshape(-1?1))
test_y=ss_x.transform(test_y.reshape(-1?1))

def?weight_variable(shape):
????initial=?tf.truncated_normal(shapestddev=0.1)
????return?tf.Variable(initial)
def?bias_variable(shape):
????initial?=?tf.constant(0.1?shape=shape)
????return?tf.Variable(initial)
def?conv2d(x?W):
????return?tf.nn.conv2d(x?W?strides=[1?1?1?1]?padding=‘SAME‘)
def?max_pool_2x2(x):
????return?tf.nn.max_pool(x?ksize=[1221]?strides=[1221]?padding=‘SAME‘)
xs?=?tf.placeholder(tf.float32?[None?13])?#原始數據的維度:13
ys?=?tf.placeholder(tf.float32?[None?1])#輸出數據為維度:1
keep_prob?=?tf.placeholder(tf.float32)#dropout的比例
x_image?=?tf.reshape(xs?[-1?13?1?1])
#第一卷積層
W_conv1?=?weight_variable([22?132])?
b_conv1?=?bias_variable([32])
h_conv1?=?tf.nn.relu(conv2d(x_image?W_conv1)?+?b_conv1)
#?conv2?layer?##第二卷積層
W_conv2?=?weight_variable([22?32?64])?
b_conv2?=?bias_variable([

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