paddle模型组网方式

两种组网方式，分别为 Sequential 组网与 SubClass 组网

一、Sequential 组网——顺序网络结构

import paddle
# Sequential形式组网
mnist = paddle.nn.Sequential(
    paddle.nn.Flatten(),
    paddle.nn.Linear(784, 512),
    paddle.nn.ReLU(),
    paddle.nn.Dropout(0.2),
    paddle.nn.Linear(512, 10)
)

二、 SubClass 组网——复杂网络结构

# Layer类继承方式组网
class Mnist(paddle.nn.Layer):
    def __init__(self):
        super(Mnist, self).__init__()

        self.flatten = paddle.nn.Flatten()
        self.linear_1 = paddle.nn.Linear(784, 512)
        self.linear_2 = paddle.nn.Linear(512, 10)
        self.relu = paddle.nn.ReLU()
        self.dropout = paddle.nn.Dropout(0.2)

    def forward(self, inputs):
        y = self.flatten(inputs)
        y = self.linear_1(y)
        y = self.relu(y)
        y = self.dropout(y)
        y = self.linear_2(y)

        return y

mnist_2 = Mnist()