lenet.py

# AUTOGENERATED! DO NOT EDIT! File to edit: simple_network.ipynb.

# %% auto 0
__all__ = ['LeNet5']

# %% simple_network.ipynb 1
#%matplotlib inline

import torch
import torch.nn as nn
import torch.nn.functional as F
import torch.optim as optim

import torchvision
import torchvision.transforms as transforms

import matplotlib
import matplotlib.pyplot as plt
import numpy as np

# %% simple_network.ipynb 4
class LeNet5(nn.Module):
    def __init__(self, num_classes):
        super().__init__()
        self.l1 = nn.Sequential(
            nn.Conv2d(in_channels=1, out_channels=6, kernel_size=5, stride=1, padding=2),   # 28*28-->32*32-->28*28
            nn.BatchNorm2d(6),
            nn.ReLU(),
            nn.MaxPool2d(kernel_size = 2, stride = 2))
            
        self.l2 = nn.Sequential(
            nn.Conv2d(in_channels=6, out_channels=16, kernel_size=5, stride=1, padding=0),  # 10*10
            nn.BatchNorm2d(16),
            nn.ReLU(),
            nn.MaxPool2d(kernel_size = 2, stride = 2))
        
        self.classifier = nn.Sequential(
            nn.Flatten(),
            nn.Linear(in_features=16*5*5, out_features=120),
            nn.ReLU(),
            nn.Linear(in_features=120, out_features=84),
            nn.ReLU(),
            nn.Linear(in_features=84, out_features=num_classes),
        )
        
    def forward(self, x):
        out = self.l1(x)
        out = self.l2(out)
        out = self.classifier(out)
        return out