def __init__(self, num_classes=77): super(AlexNet, self).__init__() self.features = nn.Sequential( nn.Conv2d(3, 64, kernel_size=11, stride=4, padding=5), nn.ReLU(inplace=True), nn.MaxPool2d(kernel_size=2, stride=2), nn.Conv2d(64, 192, kernel_size=5, padding=2), nn.ReLU(inplace=True), nn.MaxPool2d(kernel_size=2, stride=2), nn.Conv2d(192, 384, kernel_size=3, padding=1), nn.ReLU(inplace=True), nn.Conv2d(384, 256, kernel_size=3, padding=1), nn.ReLU(inplace=True), nn.Conv2d(256, 256, kernel_size=3, padding=1), nn.ReLU(inplace=True), nn.MaxPool2d(kernel_size=2, stride=2), ) self.classifier = nn.Linear(256, num_classes)
时间: 2023-09-15 21:22:34 浏览: 224
mempool_hook_userdef_0924
This is the constructor of the AlexNet class in PyTorch. It defines the architecture of the AlexNet model, which is a deep convolutional neural network designed for image classification tasks.
The model consists of two main parts: the feature extractor and the classifier. The feature extractor is composed of several convolutional layers followed by max pooling layers, which extract high-level features from the input image. The classifier is a fully connected layer that maps the extracted features to the output classes.
The input to the model is a 3-channel image with height and width of at least 227 pixels. The output is a probability distribution over the 77 possible classes (by default).
Overall, this model is effective for image classification tasks and has achieved state-of-the-art performance on several benchmark datasets.
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