58 lines
1.8 KiB
Python
58 lines
1.8 KiB
Python
import os
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import torch
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import torchvision
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import torchvision.transforms as transforms
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from torch.utils.data import DataLoader
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from torchvision import datasets, models
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import torch.nn as nn
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import torch.optim as optim
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from tqdm import tqdm # https://tqdm.github.io/
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# https://pytorch.org/tutorials/beginner/basics/quickstart_tutorial.html
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# ======= Settings =======
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DATA_DIR = "./CIFAKE"
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BATCH_SIZE = 16
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NUM_CLASSES = 2
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NUM_EPOCHS = 10
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LEARNING_RATE = 1e-4
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DEVICE = "cuda"
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# ======= Transforms =======
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transform = transforms.Compose([
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transforms.Resize((224, 224)), # Ensure fixed input size
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transforms.ToTensor(),
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transforms.Normalize([0.485, 0.456, 0.406], # ImageNet mean
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[0.229, 0.224, 0.225]) # ImageNet std
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])
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# ======= Load Data =======
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test_dataset = datasets.ImageFolder(os.path.join(DATA_DIR, "test"), transform=transform)
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test_loader = DataLoader(test_dataset, batch_size=BATCH_SIZE, shuffle=True, num_workers=2, pin_memory=True)
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# ======= Load Model =======
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model = models.resnet18(pretrained=True)
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model.fc = nn.Linear(model.fc.in_features, NUM_CLASSES)
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state = torch.load("resnet18_cifake.pth", map_location=torch.device('cuda'))
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model.load_state_dict(state)
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model = model.to(DEVICE)
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# ======= Evaluation =======
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model.eval()
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correct, total = 0, 0
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with torch.no_grad():
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for inputs, labels in tqdm(test_loader):
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inputs, labels = inputs.to(DEVICE), labels.to(DEVICE)
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inputs = inputs.contiguous()
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outputs = model(inputs)
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_, predicted = torch.max(outputs.data, 1)
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total += labels.size(0)
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correct += (predicted == labels).sum().item()
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#print(f"total={total}, correct={correct}")
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if total >= 400:
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break
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print(f"Test Accuracy: {100 * correct / total:.2f}%")
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