VGG_MEAN = [103.939, 116.779, 123.68] class Vgg19: def __init__(self, vgg19_npy_path=None): if vgg19_npy_path is None: path = inspect.getfile(Vgg19) path = os.path.abspath(os.path.join(path, os.pardir)) path = os.path.join(path, "vgg19.npy") vgg19_npy_path = path print(vgg19_npy_path)

features_list = list(vgg19.features.children()) self.conv2_2 = torch.nn.Sequential(features_list[:13]) self.conv3_4 = torch.nn.Sequential(features_list[13:26]) self.conv4_4 = torch.nn.Sequential(features_list[26: 39]) self.conv5_4 = torch.nn.Sequential(features_list[39:-1]) self.tail_layer = features_list[-1] self.fc_layers = list(vgg19.classifier.children())[:-2] self.fc_layers = torch.nn.Sequential(list(self.fc_layers)) self.extract_0 = torch.nn.Sequential( torch.nn.MaxPool2d(kernel_size=8, stride=8), torch.nn.Conv2d(128, self.k, kernel_size=1, stride=1) ) self.extract_1 = torch.nn.Sequential( torch.nn.MaxPool2d(kernel_size=4, stride=4), torch.nn.Conv2d(256, self.k, kernel_size=1, stride=1) )self.extract_2 = torch.nn.Sequential( torch.nn.MaxPool2d(kernel_size=2, stride=2), torch.nn.Conv2d(512, self.k, kernel_size=1, stride=1) ) self.extract_3 = torch.nn.Sequential( torch.nn.Conv2d(512, self.k, kernel_size=1, stride=1) ) self.fc0 = torch.nn.Linear(196, 1, bias=True) self.fc1 = torch.nn.Linear(196, 1, bias=True) self.fc2 = torch.nn.Linear(196, 1, bias=True) self.fc3 = torch.nn.Linear(196, 1, bias=True) self.fc4 = torch.nn.Linear(4096, 2 k, bias=True) self.bn1 = torch.nn.BatchNorm1d(k) self.bn2 = torch.nn.BatchNorm1d(k) weight_init(self.fc0, self.fc1, self.fc2, self.fc3, self.fc4)

这段代码定义了一个名为 VGG19Encoder 的神经网络模型。它使用了预训练的 VGG19 模型的前四...- weight_init(self.fc0, self.fc1, self.fc2, self.fc3, self.fc4)：对所有全连接层进行权重初始化，以提高模型的性能。

class MyNet(nn.Module): def init(self): super(MyNet, self).init() self.vgg16 = vgg16(pretrained=True) self.resnet18 = resnet18(pretrained=True) self.vgg16.classifier = nn.Identity() self.resnet18.fc = nn.Identity() self.fc = nn.Linear(25600, 2) def forward(self, x): x1 = self.vgg16(x) x2 = self.resnet18(x) x1 = x1.view(x1.size(0), -1) x2 = x2.view(x2.size(0), -1) x = torch.cat((x1, x2), dim=1) x = self.fc(x) return x 将以上代码加入DANet注意力机制

def __init__(self, in_channels, out_channels, reduction=16): super(DAnet, self).__init__() self.avg_pool = nn.AdaptiveAvgPool2d(1) self.conv1 = nn.Conv2d(in_channels, in_channels // reduction, ...

import torch from torch import nn from torch.utils.tensorboard import SummaryWriter class MyModule(nn.Module): def init(self): super(MyModule, self).init() self.model1 = nn.Sequential( nn.Flatten(), nn.Linear(3072, 100), nn.ReLU(), nn.Linear(100, 1), nn.Sigmoid() ) def forward(self, x): x = self.model1(x) return x import torch import torchvision from PIL.Image import Image from torch.utils.tensorboard import SummaryWriter from torch import nn, optim from torch.utils.data import dataloader from torchvision.transforms import transforms from module import MyModule train = torchvision.datasets.CIFAR10(root="../data",train=True, download=True, transform= transforms.ToTensor()) vgg_model = torchvision.models.vgg16(pretrained=True) vgg_model.classifier.add_module('add_linear', nn.Linear(1000,2)) #ToImage = transforms.ToPILImage() #Image.show(ToImage(train[0][0])) train_data = dataloader.DataLoader(train, batch_size = 128, shuffle=True) model = MyModule() #criterion = nn.BCELoss() epochs = 5 learningRate = 1e-3 optimizer = optim.SGD(model.parameters(),lr = learningRate) loss = nn.CrossEntropyLoss() Writer = SummaryWriter(log_dir="Training") step = 0 for epoch in range(epochs): total_loss = 0 for data,labels in train_data: y = vgg_model(data) los = loss(y,labels) optimizer.zero_grad() los.backward() optimizer.step() Writer.add_scalar("Training",los,step) step = step + 1 if step%100 == 0: print("Training for {0} times".format(step)) total_loss += los print("total_loss is {0}".format(los)) Writer.close() torch.save(vgg_model,"model_vgg.pth")修改变成VGG16-两分类模型

好的，您的问题是如何将这段代码修改成一个基于VGG16的两分类模型？我可以给您一些指导。首先，我们需要将原先的MyModule替换成VGG16模型。...torch.save(vgg_model,"model_vgg.pth") 希望这个回答能够帮到您！

描述这段代码 class VGGTest(nn.Module): def init(self, pretrained=True, numClasses=10): super(VGGTest, self).init() # conv1 1/2 self.conv1_1 = nn.Conv2d(3, 64, kernel_size=3, padding=1) self.relu1_1 = nn.ReLU(inplace=True) self.conv1_2 = nn.Conv2d(64, 64, kernel_size=3, padding=1) self.relu1_2 = nn.ReLU(inplace=True) self.pool1 = nn.MaxPool2d(kernel_size=2, stride=2) # conv2 1/4 self.conv2_1 = nn.Conv2d(64, 128, kernel_size=3, padding=1) self.relu2_1 = nn.ReLU(inplace=True) self.conv2_2 = nn.Conv2d(128, 128, kernel_size=3, padding=1) self.relu2_2 = nn.ReLU(inplace=True) self.pool2 = nn.MaxPool2d(kernel_size=2, stride=2) # conv3 1/8 self.conv3_1 = nn.Conv2d(128, 256, kernel_size=3, padding=1) self.relu3_1 = nn.ReLU(inplace=True) self.conv3_2 = nn.Conv2d(256, 256, kernel_size=3, padding=1) self.relu3_2 = nn.ReLU(inplace=True) self.conv3_3 = nn.Conv2d(256, 256, kernel_size=3, padding=1) self.relu3_3 = nn.ReLU(inplace=True) self.pool3 = nn.MaxPool2d(kernel_size=2, stride=2) # conv4 1/16 self.conv4_1 = nn.Conv2d(256, 512, kernel_size=3, padding=1) self.relu4_1 = nn.ReLU(inplace=True) self.conv4_2 = nn.Conv2d(512, 512, kernel_size=3, padding=1) self.relu4_2 = nn.ReLU(inplace=True) self.conv4_3 = nn.Conv2d(512, 512, kernel_size=3, padding=1) self.relu4_3 = nn.ReLU(inplace=True) self.pool4 = nn.MaxPool2d(kernel_size=2, stride=2) # conv5 1/32 self.conv5_1 = nn.Conv2d(512, 512, kernel_size=3, padding=1) self.relu5_1 = nn.ReLU(inplace=True) self.conv5_2 = nn.Conv2d(512, 512, kernel_size=3, padding=1) self.relu5_2 = nn.ReLU(inplace=True) self.conv5_3 = nn.Conv2d(512, 512, kernel_size=3, padding=1) self.relu5_3 = nn.ReLU(inplace=True) self.pool5 = nn.MaxPool2d(kernel_size=2, stride=2)

这段代码定义了一个名为VGGTest的神经网络模型，该模型使用了VGG网络的结构。它包含了5个卷积层和5个最大池化层，每个卷积层后面都跟着一个ReLU激活函数。其中第一个卷积层输入通道数为3，输出通道数为64，卷积核...

self.vgg = models.vgg19_bn(pretrained=True)

This line of code initializes a VGG19 model with batch normalization layers and loads pre-trained weights from the ImageNet dataset. The models module is from the PyTorch library, which contains pre...

import torch import torch.nn as nn import torchvision.models as models class FCNTransformer(nn.Module): def init(self, num_classes): super(FCNTransformer, self).init() # Load pre-trained V16 model as FCN backbone vgg16 = models.vgg16(pretrained=True) features = list(vgg16.features.children()) self.backbone = nn.Sequential(*features) # FCN layers self.fcn_layers = nn.Sequential( nn.Conv2d(512, 4096, 7), nn.ReLU(inplace=True), nn.Dropout(), nn.Conv2d(4096, 4096, 1), nn.ReLU(inplace=True), nn.Dropout(), nn.Conv2d(4096, num_classes, 1) ) # Transformer layers self.transformer = nn.Transformer( d_model=512, nhead=8, num_encoder_layers=6, num_decoder_layers=6, dim_feedforward=2048, dropout=0.1 ) def forward(self,x): # Backbone feature extraction features = self.backbone(x) # FCN layers fcn_out = self.fcn_layers(features) # Reshaping output for transformer input b, c, h, w = fcn_out.size() fcn_out = fcn_out.squeeze().view(c, b, -1).permute(2, 0, 1) # Reshaping for transformer input # Transformer encoding transformer_out = self.transformer.encode(fcn_out) # Reshaping output for segmentation prediction transformer_out = transformer_out.permute(1, 2, 0).view(b, c, h, w) return transformer_out if name == 'main': a = torch.randn(1, 3, 512, 512) model = FCNTransformer(num_classes=2) print(model(a).shape) 改进这段代码

def __init__(self, num_classes): super(FCNTransformer, self).__init__() # Load pre-trained V16 model as FCN backbone vgg16 = models.vgg16(pretrained=True) features = list(vgg16.features.children...

failed to download vgg_generated_64.i. status=7;"couldn't connect to server

当出现"failed to download vgg_generated_64.i. status=7; couldn't connect to server"的错误时，意味着无法连接到服务器以下载名为“vgg_generated_64.i”的文件。出现这个错误可能是由于几个原因造成的。首先...

描述这段代码 # load pretrained params from torchvision.models.vgg16(pretrained=True) if pretrained: pretrained_model = torchvision.models.vgg16(pretrained=pretrained) = pretrained_params = pretrained_model.state_dict() keys = list(pretrained_params.keys()) new_dict = {} for index, key in enumerate(self.state_dict().keys()): new_dict[key] = pretrained_params[keys[index]] self.load_state_dict(new_dict) = self.classifier = nn.Sequential( = nn.Linear(in_features=512 * 1 * 1, out_features=256), = # nn.Linear(in_features=512 * 7 * 7, out_features=256), = nn.ReLU(True), nn.Dropout(), nn.Linear(in_features=256, out_features=256), nn.ReLU(True), nn.Dropout(), nn.Linear(in_features=256, out_features=numClasses), ) def forward(self, x): # output: 32 * 32 * 3 x = self.relu1_1(self.conv1_1(x)) # output: 32 * 32 * 64 x = self.relu1_2(self.conv1_2(x)) # output: 32 * 32 * 64 x = self.pool1(x) # output: 16 * 16 * 64 x = self.relu2_1(self.conv2_1(x)) x = self.relu2_2(self.conv2_2(x)) x = self.pool2(x) x = self.relu3_1(self.conv3_1(x)) x = self.relu3_2(self.conv3_2(x)) x = self.relu3_3(self.conv3_3(x)) x = self.pool3(x) x = self.relu4_1(self.conv4_1(x)) x = self.relu4_2(self.conv4_2(x)) x = self.relu4_3(self.conv4_3(x)) x = self.pool4(x) x = self.relu5_1(self.conv5_1(x)) x = self.relu5_2(self.conv5_2(x)) x = self.relu5_3(self.conv5_3(x)) x = self.pool5(x) x = x.view(x.size(0), -1) output = self.classifier(x) return output

这段代码定义了一个基于 VGG16 架构的卷积神经网络模型，用于图像分类任务。在初始化过程中，如果指定了 pretrained=True 参数，则会从 torchvision.models.vgg16 加载预先训练好的参数，并将其应用于模型的权重中。...

from collections import OrderedDict import torch import torch.nn.functional as F import torchvision from torch import nn import models.vgg_ as models class BackboneBase_VGG(nn.Module): def init(self, backbone: nn.Module, num_channels: int, name: str, return_interm_layers: bool): super().init() features = list(backbone.features.children()) if return_interm_layers: if name == 'vgg16_bn': self.body1 = nn.Sequential(features[:13]) self.body2 = nn.Sequential(features[13:23]) self.body3 = nn.Sequential(features[23:33]) self.body4 = nn.Sequential(features[33:43]) else: self.body1 = nn.Sequential(features[:9]) self.body2 = nn.Sequential(features[9:16]) self.body3 = nn.Sequential(features[16:23]) self.body4 = nn.Sequential(features[23:30]) else: if name == 'vgg16_bn': self.body = nn.Sequential(features[:44]) # 16x down-sample elif name == 'vgg16': self.body = nn.Sequential(features[:30]) # 16x down-sample self.num_channels = num_channels self.return_interm_layers = return_interm_layers def forward(self, tensor_list): out = [] if self.return_interm_layers: xs = tensor_list for _, layer in enumerate([self.body1, self.body2, self.body3, self.body4]): xs = layer(xs) out.append(xs) else: xs = self.body(tensor_list) out.append(xs) return out class Backbone_VGG(BackboneBase_VGG): """ResNet backbone with frozen BatchNorm.""" def init(self, name: str, return_interm_layers: bool): if name == 'vgg16_bn': backbone = models.vgg16_bn(pretrained=True) elif name == 'vgg16': backbone = models.vgg16(pretrained=True) num_channels = 256 super().init(backbone, num_channels, name, return_interm_layers) def build_backbone(args): backbone = Backbone_VGG(args.backbone, True) return backbone if name == 'main': Backbone_VGG('vgg16', True)

这段代码是一个基于VGG的神经网络模型的定义，主要用于特征提取。其中包括两个类：BackboneBase_VGG和Backbone_VGG以及一个函数build_backbone。 BackboneBase_VGG类是VGG的基础类，用于构建VGG神经网络...

# 实例化模型 model = vgg("vgg16", 401, 512, 10) model.summary() # using keras low level api for training loss_object = tf.keras.losses.CategoricalCrossentropy(from_logits=False) optimizer = tf.keras.optimizers.Adam(learning_rate=0.0001) train_loss = tf.keras.metrics.Mean(name='train_loss') train_accuracy = tf.keras.metrics.CategoricalAccuracy(name='train_accuracy') test_loss = tf.keras.metrics.Mean(name='test_loss') test_accuracy = tf.keras.metrics.CategoricalAccuracy(name='test_accuracy')

这段代码看起来是在使用 TensorFlow 2.0+ 的 Keras 高级 API 实现 VGG-16 模型的训练。使用的优化器是 Adam，学习率为 0.0001。同时，还定义了训练和测试过程中的损失函数和准确率的度量指标。训练时使用的是分类...

# This is a sample Python script. # Press Shift+F10 to execute it or replace it with your code. # Press Double Shift to search everywhere for classes, files, tool windows, actions, and settings. import torch import torchvision from PIL.Image import Image from torch.utils.tensorboard import SummaryWriter from torch import nn, optim from torch.utils.data import dataloader from torchvision.transforms import transforms from module import MyModule train = torchvision.datasets.CIFAR10(root="../data",train=True, download=True, transform= transforms.ToTensor()) vgg_model = torchvision.models.vgg16(pretrained=True) vgg_model.classifier.add_module('add_linear', nn.Linear(1000,2)) #ToImage = transforms.ToPILImage() #Image.show(ToImage(train[0][0])) train_data = dataloader.DataLoader(train, batch_size = 128, shuffle=True) model = MyModule() epochs = 5 learningRate = 1e-3 optimizer = optim.SGD(model.parameters(),lr = learningRate) loss = nn.CrossEntropyLoss() Writer = SummaryWriter(log_dir="Training") step = 0 for epoch in range(epochs): total_loss = 0 for data,labels in train_data: y = vgg_model(data) los = loss(y,labels) optimizer.zero_grad() los.backward() optimizer.step() Writer.add_scalar("Training",los,step) step = step + 1 if step%100 == 0: print("Training for {0} times".format(step)) total_loss += los print("total_loss is {0}".format(los)) Writer.close() torch.save(vgg_model,"model_vgg.pth")将以上代码修改为二分类

torch.save(vgg_model, "model_vgg.pth") 在这个版本中，我们使用了nn.LogSoftmax作为最后一层的激活函数，并使用nn.NLLLoss()作为损失函数。同时，我们将VGG网络的输出层修改为一个具有两个输出节点的线性...

class Age_Model(): def init(self): self.model = self.loadModel() self.output_indexes = np.array([i for i in range(0, 101)]) def predict_age(self,face_image): image_preprocesing = self.transform_face_array2age_face(face_image) age_predictions = self.model.predict(image_preprocesing )[0,:] result_age = self.findApparentAge(age_predictions) return result_age def loadModel(self): model = VGGFace.baseModel() #-------------------------- classes = 101#101 base_model_output = Sequential() base_model_output = Convolution2D(classes, (1, 1), name='predictions')(model.layers[-4].output) base_model_output = Flatten()(base_model_output) base_model_output = Activation('softmax')(base_model_output) #-------------------------- age_model = Model(inputs=model.input, outputs=base_model_output) #-------------------------- home = str(Path.home()) age_model.load_weights(home+'/.deepface/weights/age_model_weights.h5') return age_model

这段代码是一个基于VGGFace模型的年龄预测模型。其中，loadModel函数用于加载预训练的模型权重；predict_age函数用于对输入的人脸图像进行预测，返回预测结果的年龄。具体来说，该模型使用VGGFace模型作为基础模型...

VGG_MEAN = [103.939, 116.779, 123.68] class Vgg19: def init(self, vgg19_npy_path=None): if vgg19_npy_path is None: path = inspect.getfile(Vgg19) path = os.path.abspath(os.path.join(path, os.pardir)) path = os.path.join(path, "vgg19.npy") vgg19_npy_path = path print(vgg19_npy_path)

vgg_model = models.vggnet(requires_grad=true)

vgg_weights = torch.load('./weights/vgg16_reducedfc.pth')

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VGG_MEAN = [103.939, 116.779, 123.68] class Vgg19: def __init__(self, vgg19_npy_path=None): if vgg19_npy_path is None: path = inspect.getfile(Vgg19) path = os.path.abspath(os.path.join(path, os.pardir)) path = os.path.join(path, "vgg19.npy") vgg19_npy_path = path print(vgg19_npy_path)

vgg_model = models.vggnet(requires_grad=true)

vgg_weights = torch.load('./weights/vgg16_reducedfc.pth')

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‘vgg_generated_120.i’and ‘boostdesc_bgm.i’No such file or directory.rar

vgg_generated_48.i

vgg_generated_64.i

vgg16_false = torchvision.models.vgg16()

self.vgg = models.vgg19_bn(pretrained=True)

failed to download vgg_generated_64.i. status=7;"couldn't connect to server

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VGG_MEAN = [103.939, 116.779, 123.68] class Vgg19: def init(self, vgg19_npy_path=None): if vgg19_npy_path is None: path = inspect.getfile(Vgg19) path = os.path.abspath(os.path.join(path, os.pardir)) path = os.path.join(path, "vgg19.npy") vgg19_npy_path = path print(vgg19_npy_path)