网络结构 googlenet
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网络结构 googlenet.py
在PaddlePaddle的models下面,有关于GoogLeNet的实现代码,大家可以直接学习拿来跑一下:
1 import paddle.v2 as paddle
2
3 __all__ = ['googlenet']
4
5
6 def inception(name, input, channels, filter1, filter3R, filter3, filter5R,
7 filter5, proj):成都人流术后注意事项
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8 cov1 = paddle.layer.img_conv(
9 name=name + '_1',
10 input=input,
11 filter_size=1,
12 num_channels=channels,
13 num_filters=filter1,
14 stride=1,
15 padding=0)
16
17 cov3r = paddle.layer.img_conv(
18 name=name + '_3r',
19 input=input,成都治疗阴道炎专业的医院
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20 filter_size=1,
21 num_channels=channels,
22 num_filters=filter3R,
23 stride=1,
24 padding=0)
25 cov3 = paddle.layer.img_conv(
26 name=name + '_3',
27 input=cov3r,高新区包皮过长的治疗费多吗
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28 filter_size=3,
29 num_filters=filter3,
30 stride=1,
31 padding=1)
32
33 cov5r = paddle.layer.img_conv(
34 name=name + '_5r',
35 input=input,
36 filter_size=1,
37 num_channels=channels,
38 num_filters=filter5R,
39 stride=1,
40 padding=0)
41 cov5 = paddle.layer.img_conv(
42 name=name + '_5',温江区哪家医院治疗月经不调好
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43 input=cov5r,
44 filter_size=5,
45 num_filters=filter5,
46 stride=1,
47 padding=2)
48
49 pool1 = paddle.layer.img_pool(
50 name=name + '_max',
51 input=input,
52 pool_size=3,
53 num_channels=channels,
54 stride=1,
55 padding=1)
56 covprj = paddle.layer.img_conv(
57 name=name + '_proj',
58 input=pool1,
59 filter_size=1,
60 num_filters=proj,
61 stride=1,
62 padding=0)
63
64 cat = paddle.layer.concat(name=name, input=[cov1, cov3, cov5, covprj])
65 return cat
66
67
68 def googlenet(input, class_dim):
69 # stage 1
70 conv1 = paddle.layer.img_conv(
71 name="conv1",
72 input=input,
73 filter_size=7,
74 num_channels=3,
75 num_filters=64,
76 stride=2,
77 padding=3)
78 pool1 = paddle.layer.img_pool(
79 name="pool1", input=conv1, pool_size=3, num_channels=64, stride=2)
80
81 # stage 2
82 conv2_1 = paddle.layer.img_conv(
83 name="conv2_1",
84 input=pool1,
85 filter_size=1,
86 num_filters=64,
87 stride=1,
88 padding=0)
89 conv2_2 = paddle.layer.img_conv(
90 name="conv2_2",
91 input=conv2_1,
92 filter_size=3,
93 num_filters=192,
94 stride=1,
95 padding=1)
96 pool2 = paddle.layer.img_pool(
97 name="pool2", input=conv2_2, pool_size=3, num_channels=192, stride=2)
98
99 # stage 3
100 ince3a = inception("ince3a", pool2, 192, 64, 96, 128, 16, 32, 32)
101 ince3b = inception("ince3b", ince3a, 256, 128, 128, 192, 32, 96, 64)
102 pool3 = paddle.layer.img_pool(
103 name="pool3", input=ince3b, num_channels=480, pool_size=3, stride=2)
104
105 # stage 4
106 ince4a = inception("ince4a", pool3, 480, 192, 96, 208, 16, 48, 64)
107 ince4b = inception("ince4b", ince4a, 512, 160, 112, 224, 24, 64, 64)
108 ince4c = inception("ince4c", ince4b, 512, 128, 128, 256, 24, 64, 64)
109 ince4d = inception("ince4d", ince4c, 512, 112, 144, 288, 32, 64, 64)
110 ince4e = inception("ince4e", ince4d, 528, 256, 160, 320, 32, 128, 128)
111 pool4 = paddle.layer.img_pool(
112 name="pool4", input=ince4e, num_channels=832, pool_size=3, stride=2)
113
114 # stage 5
115 ince5a = inception("ince5a", pool4, 832, 256, 160, 320, 32, 128, 128)
116 ince5b = inception("ince5b", ince5a, 832, 384, 192, 384, 48, 128, 128)
117 pool5 = paddle.layer.img_pool(
118 name="pool5",
119 input=ince5b,
120 num_channels=1024,
121 pool_size=7,
122 stride=7,
123 pool_type=paddle.pooling.Avg())
124 dropout = paddle.layer.addto(
125 input=pool5,
126 layer_attr=paddle.attr.Extra(drop_rate=0.4),
127 act=paddle.activation.Linear())
128
129 out = paddle.layer.fc(
130 input=dropout, size=class_dim, act=paddle.activation.Softmax())
131
132 # fc for output 1
133 pool_o1 = paddle.layer.img_pool(
134 name="pool_o1",
135 input=ince4a,
136 num_channels=512,
137 pool_size=5,
138 stride=3,
139 pool_type=paddle.pooling.Avg())
140 conv_o1 = paddle.layer.img_conv(
141 name="conv_o1",
142 input=pool_o1,
143 filter_size=1,
144 num_filters=128,
145 stride=1,
146 padding=0)
147 fc_o1 = paddle.layer.fc(
148 name="fc_o1",
149 input=conv_o1,
150 size=1024,
151 layer_attr=paddle.attr.Extra(drop_rate=0.7),
152 act=paddle.activation.Relu())
153 out1 = paddle.layer.fc(
154 input=fc_o1, size=class_dim, act=paddle.activation.Softmax())
155
156 # fc for output 2
157 pool_o2 = paddle.layer.img_pool(
158 name="pool_o2",
159 input=ince4d,
160 num_channels=528,
161 pool_size=5,
162 stride=3,
163 pool_type=paddle.pooling.Avg())
164 conv_o2 = paddle.layer.img_conv(
165 name="conv_o2",
166 input=pool_o2,
167 filter_size=1,
168 num_filters=128,
169 stride=1,
170 padding=0)
171 fc_o2 = paddle.layer.fc(
172 name="fc_o2",
173 input=conv_o2,
174 size=1024,
175 layer_attr=paddle.attr.Extra(drop_rate=0.7),
176 act=paddle.activation.Relu())
177 out2 = paddle.layer.fc(
178 input=fc_o2, size=class_dim, act=paddle.activation.Softmax())
179
180 return out, out1, out2
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