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- "Requirement already satisfied: torch in c:\\users\\adity\\miniconda3\\envs\\dl_cpu\\lib\\site-packages (2.5.1)\n",
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- "Requirement already satisfied: torchvision in c:\\users\\adity\\miniconda3\\envs\\dl_cpu\\lib\\site-packages (0.20.1)\n",
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- "Note: you may need to restart the kernel to use updated packages.\n"
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- ]
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- }
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- ],
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- "source": [
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- "pip install torch torchvision datasets tqdm matplotlib\n"
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- ]
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- },
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- {
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- "cell_type": "code",
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- "execution_count": 2,
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- "id": "eaba3244-e2d3-4d34-b44c-e94287ac08af",
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- "metadata": {},
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- "outputs": [
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- {
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- "name": "stdout",
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- "output_type": "stream",
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- "text": [
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- "Using device: cpu\n"
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- ]
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- }
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- ],
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- "source": [
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- "import torch\n",
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- "import torch.nn as nn\n",
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- "import torch.optim as optim\n",
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- "from torchvision import models, transforms\n",
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- "from torch.utils.data import DataLoader\n",
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- "from datasets import load_dataset\n",
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- "from tqdm import tqdm\n",
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- "import matplotlib.pyplot as plt\n",
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- "from IPython.display import clear_output\n",
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- "\n",
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- "# Set device\n",
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- "device = torch.device(\"cuda\" if torch.cuda.is_available() else \"cpu\")\n",
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- "print(\"Using device:\", device)\n"
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- ]
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- },
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- {
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- "cell_type": "code",
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- "execution_count": 3,
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- "id": "ded6afcd-a0f0-437d-8ad1-f816650146de",
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- "metadata": {},
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- "outputs": [],
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- "source": [
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- "from torchvision import transforms\n",
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- "\n",
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- "train_transform = transforms.Compose([\n",
110
- " transforms.Resize((224, 224)),\n",
111
- " transforms.RandomHorizontalFlip(),\n",
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- " transforms.ToTensor(),\n",
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- " transforms.Normalize(mean=[0.485, 0.456, 0.406],\n",
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- " std=[0.229, 0.224, 0.225])\n",
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- "])\n",
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- "\n",
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- "val_transform = transforms.Compose([\n",
118
- " transforms.Resize((224, 224)),\n",
119
- " transforms.ToTensor(),\n",
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- " transforms.Normalize(mean=[0.485, 0.456, 0.406],\n",
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- " std=[0.229, 0.224, 0.225])\n",
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- "])\n"
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- ]
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- },
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- {
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- "cell_type": "code",
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- "execution_count": 4,
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- "id": "b8cc0c13-a42a-405c-a003-af754e657de4",
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- "metadata": {},
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- "outputs": [],
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- "source": [
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- "from torchvision.datasets import ImageFolder\n",
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- "\n",
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- "train_dataset = ImageFolder(root=\"sickle-cell-classification-dataset/train\", transform=train_transform)\n",
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- "val_dataset = ImageFolder(root=\"sickle-cell-classification-dataset/val\", transform=val_transform)\n",
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- "test_dataset = ImageFolder(root=\"sickle-cell-classification-dataset/test\", transform=val_transform)\n"
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- ]
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- },
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- {
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- "cell_type": "code",
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- "execution_count": 5,
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- "id": "a16b08c8-93fb-4cf3-9f1f-900508e1d109",
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- "metadata": {},
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- "outputs": [
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- {
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- "name": "stdout",
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- "output_type": "stream",
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- "text": [
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- "{'AIN': 0, 'non_sickle': 1, 'sickle': 2}\n"
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- ]
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- }
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- ],
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- "source": [
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- "print(train_dataset.class_to_idx)\n"
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- ]
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- },
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- {
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- "cell_type": "code",
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- "execution_count": 6,
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- "id": "a4b8be88-5cb8-449b-9287-26b6a5151e79",
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- "metadata": {},
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- "outputs": [],
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- "source": [
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- "from torch.utils.data import DataLoader\n",
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- "\n",
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- "batch_size = 32\n",
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- "num_workers = 0 # safe for Windows\n",
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- "\n",
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- "train_loader = DataLoader(train_dataset, batch_size=batch_size, shuffle=True, num_workers=num_workers)\n",
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- "val_loader = DataLoader(val_dataset, batch_size=batch_size, shuffle=False, num_workers=num_workers)\n",
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- "test_loader = DataLoader(test_dataset, batch_size=batch_size, shuffle=False, num_workers=num_workers)\n"
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- ]
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- },
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- {
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- "cell_type": "code",
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- "execution_count": 7,
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- "id": "dd1d9ad2-800c-4b87-a639-ad13158b69b5",
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- "metadata": {
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- "scrolled": true
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- },
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- "outputs": [
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- {
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- "name": "stdout",
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- "output_type": "stream",
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- "text": [
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- "VGG(\n",
187
- " (features): Sequential(\n",
188
- " (0): Conv2d(3, 64, kernel_size=(3, 3), stride=(1, 1), padding=(1, 1))\n",
189
- " (1): ReLU(inplace=True)\n",
190
- " (2): Conv2d(64, 64, kernel_size=(3, 3), stride=(1, 1), padding=(1, 1))\n",
191
- " (3): ReLU(inplace=True)\n",
192
- " (4): MaxPool2d(kernel_size=2, stride=2, padding=0, dilation=1, ceil_mode=False)\n",
193
- " (5): Conv2d(64, 128, kernel_size=(3, 3), stride=(1, 1), padding=(1, 1))\n",
194
- " (6): ReLU(inplace=True)\n",
195
- " (7): Conv2d(128, 128, kernel_size=(3, 3), stride=(1, 1), padding=(1, 1))\n",
196
- " (8): ReLU(inplace=True)\n",
197
- " (9): MaxPool2d(kernel_size=2, stride=2, padding=0, dilation=1, ceil_mode=False)\n",
198
- " (10): Conv2d(128, 256, kernel_size=(3, 3), stride=(1, 1), padding=(1, 1))\n",
199
- " (11): ReLU(inplace=True)\n",
200
- " (12): Conv2d(256, 256, kernel_size=(3, 3), stride=(1, 1), padding=(1, 1))\n",
201
- " (13): ReLU(inplace=True)\n",
202
- " (14): Conv2d(256, 256, kernel_size=(3, 3), stride=(1, 1), padding=(1, 1))\n",
203
- " (15): ReLU(inplace=True)\n",
204
- " (16): MaxPool2d(kernel_size=2, stride=2, padding=0, dilation=1, ceil_mode=False)\n",
205
- " (17): Conv2d(256, 512, kernel_size=(3, 3), stride=(1, 1), padding=(1, 1))\n",
206
- " (18): ReLU(inplace=True)\n",
207
- " (19): Conv2d(512, 512, kernel_size=(3, 3), stride=(1, 1), padding=(1, 1))\n",
208
- " (20): ReLU(inplace=True)\n",
209
- " (21): Conv2d(512, 512, kernel_size=(3, 3), stride=(1, 1), padding=(1, 1))\n",
210
- " (22): ReLU(inplace=True)\n",
211
- " (23): MaxPool2d(kernel_size=2, stride=2, padding=0, dilation=1, ceil_mode=False)\n",
212
- " (24): Conv2d(512, 512, kernel_size=(3, 3), stride=(1, 1), padding=(1, 1))\n",
213
- " (25): ReLU(inplace=True)\n",
214
- " (26): Conv2d(512, 512, kernel_size=(3, 3), stride=(1, 1), padding=(1, 1))\n",
215
- " (27): ReLU(inplace=True)\n",
216
- " (28): Conv2d(512, 512, kernel_size=(3, 3), stride=(1, 1), padding=(1, 1))\n",
217
- " (29): ReLU(inplace=True)\n",
218
- " (30): MaxPool2d(kernel_size=2, stride=2, padding=0, dilation=1, ceil_mode=False)\n",
219
- " )\n",
220
- " (avgpool): AdaptiveAvgPool2d(output_size=(7, 7))\n",
221
- " (classifier): Sequential(\n",
222
- " (0): Linear(in_features=25088, out_features=4096, bias=True)\n",
223
- " (1): ReLU(inplace=True)\n",
224
- " (2): Dropout(p=0.5, inplace=False)\n",
225
- " (3): Linear(in_features=4096, out_features=4096, bias=True)\n",
226
- " (4): ReLU(inplace=True)\n",
227
- " (5): Dropout(p=0.5, inplace=False)\n",
228
- " (6): Linear(in_features=4096, out_features=3, bias=True)\n",
229
- " )\n",
230
- ")\n"
231
- ]
232
- }
233
- ],
234
- "source": [
235
- "import torch\n",
236
- "import torch.nn as nn\n",
237
- "from torchvision.models import vgg16, VGG16_Weights\n",
238
- "\n",
239
- "# Number of classes\n",
240
- "num_classes = len(train_dataset.classes) # automatically from ImageFolder\n",
241
- "\n",
242
- "# Load pretrained VGG16\n",
243
- "model = vgg16(weights=VGG16_Weights.DEFAULT)\n",
244
- "\n",
245
- "# Replace the last classifier layer\n",
246
- "model.classifier[-1] = nn.Linear(model.classifier[-1].in_features, num_classes)\n",
247
- "\n",
248
- "# Move to device\n",
249
- "device = torch.device(\"cuda\" if torch.cuda.is_available() else \"cpu\")\n",
250
- "model = model.to(device)\n",
251
- "\n",
252
- "print(model)\n"
253
- ]
254
- },
255
- {
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- "cell_type": "code",
257
- "execution_count": 8,
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- "id": "50f8f941-36a6-4986-8221-ce21dd4d1f66",
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- "metadata": {},
260
- "outputs": [
261
- {
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- "name": "stdout",
263
- "output_type": "stream",
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- "text": [
265
- "Loss, optimizer, and scheduler set up for VGGNet.\n"
266
- ]
267
- }
268
- ],
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- "source": [
270
- "import torch.optim as optim\n",
271
- "\n",
272
- "criterion_vgg = nn.CrossEntropyLoss()\n",
273
- "optimizer_vgg = optim.AdamW(model.parameters(), lr=1e-4, weight_decay=1e-4)\n",
274
- "scheduler_vgg = optim.lr_scheduler.CosineAnnealingLR(optimizer_vgg, T_max=10)\n",
275
- "\n",
276
- "print(\"Loss, optimizer, and scheduler set up for VGGNet.\")\n"
277
- ]
278
- },
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- {
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- "cell_type": "code",
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- "execution_count": null,
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- "id": "2cfb1d82-e0fd-4276-af78-b6497069a5d5",
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- "metadata": {},
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- "outputs": [
285
- {
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- "name": "stderr",
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- "output_type": "stream",
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- "text": [
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- "Epoch 1/10 [Train]: 7%|████▎ | 6/88 [01:04<14:35, 10.67s/it]"
290
- ]
291
- }
292
- ],
293
- "source": [
294
- "import matplotlib.pyplot as plt\n",
295
- "from tqdm import tqdm\n",
296
- "from IPython.display import clear_output\n",
297
- "\n",
298
- "num_epochs = 10\n",
299
- "train_losses, val_losses = [], []\n",
300
- "train_accs, val_accs = [], []\n",
301
- "\n",
302
- "for epoch in range(num_epochs):\n",
303
- " # --- Training ---\n",
304
- " model.train()\n",
305
- " running_loss, correct, total = 0, 0, 0\n",
306
- " for images, labels in tqdm(train_loader, desc=f\"Epoch {epoch+1}/{num_epochs} [Train]\"):\n",
307
- " images, labels = images.to(device), labels.to(device)\n",
308
- " optimizer_vgg.zero_grad()\n",
309
- " outputs = model(images)\n",
310
- " loss = criterion_vgg(outputs, labels)\n",
311
- " loss.backward()\n",
312
- " optimizer_vgg.step()\n",
313
- "\n",
314
- " running_loss += loss.item()\n",
315
- " _, predicted = outputs.max(1)\n",
316
- " total += labels.size(0)\n",
317
- " correct += predicted.eq(labels).sum().item()\n",
318
- "\n",
319
- " avg_train_loss = running_loss / len(train_loader)\n",
320
- " train_acc = 100. * correct / total\n",
321
- "\n",
322
- " # --- Validation ---\n",
323
- " model.eval()\n",
324
- " val_loss, val_correct, val_total = 0, 0, 0\n",
325
- " with torch.no_grad():\n",
326
- " for images, labels in tqdm(val_loader, desc=f\"Epoch {epoch+1}/{num_epochs} [Val]\"):\n",
327
- " images, labels = images.to(device), labels.to(device)\n",
328
- " outputs = model(images)\n",
329
- " loss = criterion_vgg(outputs, labels)\n",
330
- " val_loss += loss.item()\n",
331
- " _, predicted = outputs.max(1)\n",
332
- " val_total += labels.size(0)\n",
333
- " val_correct += predicted.eq(labels).sum().item()\n",
334
- "\n",
335
- " avg_val_loss = val_loss / len(val_loader)\n",
336
- " val_acc = 100. * val_correct / val_total\n",
337
- "\n",
338
- " # --- Save metrics ---\n",
339
- " train_losses.append(avg_train_loss)\n",
340
- " val_losses.append(avg_val_loss)\n",
341
- " train_accs.append(train_acc)\n",
342
- " val_accs.append(val_acc)\n",
343
- "\n",
344
- " # --- Update scheduler ---\n",
345
- " scheduler_vgg.step()\n",
346
- "\n",
347
- " # --- Epoch summary ---\n",
348
- " clear_output(wait=True)\n",
349
- " print(f\"Epoch [{epoch+1}/{num_epochs}] \"\n",
350
- " f\"Train Loss: {avg_train_loss:.4f}, Train Acc: {train_acc:.2f}% | \"\n",
351
- " f\"Val Loss: {avg_val_loss:.4f}, Val Acc: {val_acc:.2f}%\")\n",
352
- "\n",
353
- " # --- Live plots ---\n",
354
- " plt.figure(figsize=(10,4))\n",
355
- " plt.subplot(1,2,1)\n",
356
- " plt.plot(train_losses, label='Train Loss')\n",
357
- " plt.plot(val_losses, label='Val Loss')\n",
358
- " plt.title('Loss')\n",
359
- " plt.xlabel('Epoch')\n",
360
- " plt.ylabel('Loss')\n",
361
- " plt.legend()\n",
362
- "\n",
363
- " plt.subplot(1,2,2)\n",
364
- " plt.plot(train_accs, label='Train Acc')\n",
365
- " plt.plot(val_accs, label='Val Acc')\n",
366
- " plt.title('Accuracy')\n",
367
- " plt.xlabel('Epoch')\n",
368
- " plt.ylabel('Accuracy (%)')\n",
369
- " plt.legend()\n",
370
- "\n",
371
- " plt.tight_layout()\n",
372
- " plt.show()\n"
373
- ]
374
- },
375
- {
376
- "cell_type": "code",
377
- "execution_count": null,
378
- "id": "69f51f76-a3dd-4a2b-9ec1-8ee77480f019",
379
- "metadata": {},
380
- "outputs": [],
381
- "source": [
382
- "import torch\n",
383
- "import matplotlib.pyplot as plt\n",
384
- "import seaborn as sns\n",
385
- "from sklearn.metrics import confusion_matrix, classification_report\n",
386
- "from tqdm import tqdm\n",
387
- "import numpy as np\n",
388
- "\n",
389
- "# --- 1. Save the trained model ---\n",
390
- "torch.save(model_shufflenet.state_dict(), \"vggnet_sickle.pth\")\n",
391
- "print(\"✅ Model saved as vggenet_sickle.pth\")\n",
392
- "\n",
393
- "\n",
394
- "# --- 2. Evaluation function with predictions ---\n",
395
- "def evaluate_with_preds(model, data_loader, device, split_name=\"Eval\"):\n",
396
- " model.eval()\n",
397
- " total, correct = 0, 0\n",
398
- " all_preds, all_labels = [], []\n",
399
- " with torch.no_grad():\n",
400
- " for images, labels in tqdm(data_loader, desc=f\"Evaluating {split_name}\"):\n",
401
- " images, labels = images.to(device), labels.to(device)\n",
402
- " outputs = model(images)\n",
403
- " _, predicted = outputs.max(1)\n",
404
- "\n",
405
- " total += labels.size(0)\n",
406
- " correct += predicted.eq(labels).sum().item()\n",
407
- "\n",
408
- " all_preds.extend(predicted.cpu().numpy())\n",
409
- " all_labels.extend(labels.cpu().numpy())\n",
410
- "\n",
411
- " accuracy = 100. * correct / total\n",
412
- " return accuracy, np.array(all_preds), np.array(all_labels)\n",
413
- "\n",
414
- "\n",
415
- "# --- 3. Run evaluation on validation set ---\n",
416
- "val_acc, preds, labels = evaluate_with_preds(model, val_loader, device, split_name=\"Val\")\n",
417
- "\n",
418
- "print(f\"\\n📊 Final Validation Accuracy: {val_acc:.2f}%\")\n",
419
- "print(\"\\nClassification Report:\")\n",
420
- "print(classification_report(labels, preds, target_names=dataset[\"train\"].features[\"label\"].names))\n",
421
- "\n",
422
- "\n",
423
- "# --- 4. Confusion matrix heatmap ---\n",
424
- "cm = confusion_matrix(labels, preds)\n",
425
- "plt.figure(figsize=(6, 5))\n",
426
- "sns.heatmap(cm, annot=True, fmt=\"d\", cmap=\"Blues\",\n",
427
- " xticklabels=dataset[\"train\"].features[\"label\"].names,\n",
428
- " yticklabels=dataset[\"train\"].features[\"label\"].names)\n",
429
- "plt.xlabel(\"Predicted\")\n",
430
- "plt.ylabel(\"True\")\n",
431
- "plt.title(\"ShuffleNet Confusion Matrix\")\n",
432
- "plt.show()\n"
433
- ]
434
- },
435
- {
436
- "cell_type": "code",
437
- "execution_count": null,
438
- "id": "854aedac-9b8d-4abc-843d-9b7ada1ee72f",
439
- "metadata": {},
440
- "outputs": [],
441
- "source": []
442
- }
443
- ],
444
- "metadata": {
445
- "kernelspec": {
446
- "display_name": "Python 3 (ipykernel)",
447
- "language": "python",
448
- "name": "python3"
449
- },
450
- "language_info": {
451
- "codemirror_mode": {
452
- "name": "ipython",
453
- "version": 3
454
- },
455
- "file_extension": ".py",
456
- "mimetype": "text/x-python",
457
- "name": "python",
458
- "nbconvert_exporter": "python",
459
- "pygments_lexer": "ipython3",
460
- "version": "3.9.23"
461
- }
462
- },
463
- "nbformat": 4,
464
- "nbformat_minor": 5
465
- }