class CNN(Model): def __init__(self): super(CNN, self).__init__() ## self.x1 = Input(shape =(1024,1,1)) self.inputshape = tf.keras.layers.InputLayer(input_shape=(1024,1,1)) self.c1 = Conv2D(filters=64, kernel_size=(2, 1), activation='relu',input_shape=(1024,1,1)) self.c2 = Conv2D(filters=64, kernel_size=(2, 1), activation='relu') self.c3 = Conv2D(filters=64, kernel_size=(2, 1), activation='relu') self.flatten = Flatten() self.f1 = Dense(360, activation='relu') self.f2 = Dense(184, activation='relu') self.f3 = Dense(4, activation='softmax') def zx(self, input): x = self.inputshape(input.astype(np.float32)) return self.c1(x) def zx1(self, input): x = self.inputshape(input.astype(np.float32)) x = self.c1(x) x = self.c2(x) x = self.c3(x) x = self.flatten(x) print(x.shape) x = self.f1(x) return self.f2(x) def call(self, input): x = self.inputshape(input) x = self.c1(x) x = self.c2(x) x = self.c3(x) x = self.flatten(x) print(x.shape) x = self.f1(x) self.x2 = self.f2(x) y = self.f3(self.x2) return y model = CNN() model.build(input_shape=(None,1024,1,1)) model.compile(optimizer='adam', loss=tf.keras.losses.SparseCategoricalCrossentropy(from_logits=False), metrics=['sparse_categorical_accuracy']) 该CNN模型每层网络的参数如何

keras-three-model-types_keras_

super(CustomModel, self).__init__() self.conv1 = Conv2D(32, (3, 3), activation='relu') self.pool = MaxPooling2D(pool_size=(2, 2)) self.flatten = Flatten() self.dense = Dense(1, activation='...

pytorch classification的.py_pytorch_pytorch分类_MNISTpytorch_

super(ConvNet, self).__init__() self.layer1 = nn.Sequential( nn.Conv2d(1, 16, kernel_size=5, stride=1, padding=2), nn.BatchNorm2d(16), nn.ReLU(), nn.MaxPool2d(kernel_size=2, stride=2)) self....

class DoubleFastRCNNOutputLayers(nn.Module): def init( self, cfg, input_size, num_classes, cls_agnostic_bbox_reg, box_dim=4 ): super(DoubleFastRCNNOutputLayers, self).init() if not isinstance(input_size, int): input_size = np.prod(input_size) self.cls_score = nn.Linear(input_size, num_classes + 1) num_bbox_reg_classes = 1 if cls_agnostic_bbox_reg else num_classes self.bbox_pred = nn.Linear(input_size, num_bbox_reg_classes * box_dim) nn.init.normal_(self.cls_score.weight, std=0.01) nn.init.normal_(self.bbox_pred.weight, std=0.001) for l in [self.cls_score, self.bbox_pred]: nn.init.constant_(l.bias, 0) self._do_cls_dropout = cfg.MODEL.ROI_HEADS.CLS_DROPOUT self._dropout_ratio = cfg.MODEL.ROI_HEADS.DROPOUT_RATIO def forward(self, x_s, x_l): if x_s.dim() > 2: x_s = torch.flatten(x_s, start_dim=1) if x_l.dim() > 2: x_l = torch.flatten(x_l, start_dim=1) proposal_deltas = self.bbox_pred(x_l) if self._do_cls_dropout: x_s = F.dropout(x_s, self._dropout_ratio, training=self.training) scores = self.cls_score(x_s) return scores, proposal_deltas

这段代码是一个双输入的Fast R-CNN输出层的实现，其中包括一个分类得分层和一个边界框回归层。它接受两个输入x_s和x_l，分别代表短边和长边的特征。在前向传播时，它首先对输入进行扁平化处理，然后通过bbox_pred层...

class CNNmodel(nn.Module): def init(self): super(CNNmodel, self).init() self.conv1d = nn.Conv1d(1, 64, kernel_size=2) self.relu = nn.ReLU(inplace=True) self.Linear1 = nn.Linear(64*75, 50) self.Linear2 = nn.Linear(50, 1) def forward(self, x): x = self.conv1d(x) x = self.relu(x) x = x.view(-1) x = self.Linear1(x) x = self.relu(x) x = self.Linear2(x) return x报错

super(CNNmodel, self).__init__() self.conv1d = nn.Conv1d(1, 64, kernel_size=2) self.relu = nn.ReLU(inplace=True) self.Linear1 = nn.Linear(64*75, 50) self.Linear2 = nn.Linear(50, 2) def forward...

写出以下代码的函数说明：class MainWindow(QTabWidget): # 初始化 def init(self): super().init() self.setWindowIcon(QIcon('images/logo.jpg')) self.setWindowTitle('jyj的花卉识别系统') # 模型初始化 self.model = tf.keras.models.load_model("models/mobilenet_fv.h5") #self.model = tf.keras.models.load_model("models/cnn_fv.h5") self.to_predict_name = "images/jyj.jpg" self.class_names = ['向日葵', '梨花', '水仙', '牡丹', '玉兰花', '玫瑰', '睡莲', '美人蕉', '荷花', '菊花', '郁金香', '鸡蛋花'] self.resize(900, 700) self.initUI()

该类的初始化函数__init__()中进行了以下操作： - 设置窗口图标和标题； - 从文件加载一个预训练模型，该模型的文件路径为"models/mobilenet_fv.h5"； - 设置一个待预测的图片文件路径to_predict_name； - 定义一个...

# 构建卷积神经网络结构 # 当前版本为卷积核大小5 * 5的版本 class CNN(nn.Module): def init(self): super(CNN, self).init() self.conv1 = nn.Conv2d(5, 16, 3, padding='same') self.bn1 = nn.BatchNorm2d(16) self.conv2 = nn.Conv2d(16, 16, 3, padding=1) self.bn2 = nn.BatchNorm2d(16) self.conv3 = nn.Conv2d(16, 32, 3, padding=1) self.bn3 = nn.BatchNorm2d(32) self.conv4 = nn.Conv2d(32, 64, 3, padding=1) self.bn4 = nn.BatchNorm2d(64) self.conv5 = nn.Conv2d(64, 128, 3, padding=1) self.bn5 = nn.BatchNorm2d(128) self.conv6 = nn.Conv2d(128, 128, 3, padding=1) self.bn6 = nn.BatchNorm2d(128) self.conv_t6 = nn.ConvTranspose2d(128, 64, 3, padding=1) self.bn_t6 = nn.BatchNorm2d(64) self.conv_t5 = nn.ConvTranspose2d(64, 32, 3, padding=1) self.bn_t5 = nn.BatchNorm2d(32) self.conv_t4 = nn.ConvTranspose2d(32, 16, 3, padding=1) self.bn_t4 = nn.BatchNorm2d(16) self.conv_t3 = nn.ConvTranspose2d(16, 16, 3, padding=1) self.bn_t3 = nn.BatchNorm2d(16) self.conv_t2 = nn.ConvTranspose2d(16, 8, 3, padding=1) self.bn_t2 = nn.BatchNorm2d(8) self.conv_1 = nn.Conv2d(8, 2, 3, padding='same') self.bn_1 = nn.BatchNorm2d(2) self.tan_h = nn.Tanh() def forward(self, x): x1 = self.tan_h(self.bn1(self.conv1(x))) x2 = self.tan_h(self.bn2(self.conv2(x1)))2 x3 = self.tan_h(self.bn3(self.conv3(x2)))2 x4 = self.tan_h(self.bn4(self.conv4(x3)))2 x5 = self.tan_h(self.bn5(self.conv5(x4)))2 x6 = self.tan_h(self.bn6(self.conv6(x5)))2 x_t6 = self.tan_h(self.bn_t6(self.conv_t6(x6)))2 x_t5 = self.tan_h(self.bn_t5(self.conv_t5(x_t6)))2 x_t4 = self.tan_h(self.bn_t4(self.conv_t4(x_t5)))2 x_t3 = self.tan_h(self.bn_t3(self.conv_t3(x_t4))) 2 x_t2 = self.tan_h(self.bn_t2(self.conv_t2(x_t3))) 2 x_1 = self.tan_h(self.bn_1(self.conv_1(x_t2))) return x_1 # 读取模型需要提前定义对应的类 model = torch.load("model1.pt") # 定义损失函数和优化器 criterion = nn.MSELoss() optimizer = optim.ASGD(model.parameters(), lr=0.01) 详细说明该神经网络的结构，功能以及为什么要选择这个

该神经网络的结构是一个基于卷积神经网络的自编码器，由卷积层和反卷积层构成。自编码器可以将输入数据进行压缩编码，然后再解码还原成原始数据。该神经网络的输入数据是一个5通道的图像，经过6个卷积层和6个反卷...

class Fruit360CnnModel(ImageClassificationBase): def init(self): super(Fruit360CnnModel,self).init() self.network = nn.Sequential( nn.Conv2d(3, 16, kernel_size=2, padding=1), nn.BatchNorm2d(16), nn.ReLU(), nn.MaxPool2d(2, 2), # 16 X 50 X 50 nn.Conv2d(16, 32, kernel_size=2, stride=1, padding=1), nn.BatchNorm2d(32), nn.ReLU(), nn.MaxPool2d(2, 2), # 32 X 25 X 25 nn.Conv2d(32, 64, kernel_size=2, stride=1, padding=1), nn.BatchNorm2d(64), nn.ReLU(), nn.MaxPool2d(5, 5), # 64 X 5 X 5 nn.Flatten(), nn.Dropout(0.3), nn.ReLU(), nn.Linear(6455, 131)) def forward(self, xb): return self.network(xb) model = Fruit360CnnModel() model

这是一个基于 PyTorch 的 CNN 模型，用于对水果图像进行分类。这个模型包含了三个卷积层和三个池化层，以及一个全连接层，最终输出 131 个类别的概率分布。其中，每个卷积层都包含了卷积、批量归一化、ReLU 激活函数...

以下是该问题定义的类class Fruit360CnnModel(ImageClassificationBase): def init(self): super(Fruit360CnnModel,self).init() self.network = nn.Sequential( nn.Conv2d(3, 16, kernel_size=2, padding=1), nn.BatchNorm2d(16), nn.ReLU(), nn.MaxPool2d(2, 2), # 16 X 50 X 50 nn.Conv2d(16, 32, kernel_size=2, stride=1, padding=1), nn.BatchNorm2d(32), nn.ReLU(), nn.MaxPool2d(2, 2), # 32 X 25 X 25 nn.Conv2d(32, 64, kernel_size=2, stride=1, padding=1), nn.BatchNorm2d(64), nn.ReLU(), nn.MaxPool2d(5, 5), # 64 X 5 X 5 nn.Flatten(), nn.Dropout(0.3), nn.ReLU(), nn.Linear(6455, 131)) def forward(self, xb): return self.network(xb) model = Fruit360CnnModel() model

这是一个基于 PyTorch 框架开发的卷积神经网络模型，用于对水果图像进行分类。该模型具有三个卷积层和三个池化层，其中输入图像的通道数为 3，输出类别数为 131。在模型的最后一层使用了 Dropout 层来减小过拟合的...

import torch import vega import torch.nn as nn class SimpleCnn(nn.Module): """Simple CNN network.""" def init(self): """Initialize.""" super(SimpleCnn, self).init() self.num_class = 11 # nas best hyperparameter self.blocks = 3 self.channel1 = 32 self.channel2 = 64 self.b1 = nn.Sequential( nn.Conv2d(1, self.channel1, padding=(0, 4), kernel_size=(1, 9), stride=(1, 1)), nn.BatchNorm2d(self.channel1), nn.ReLU(inplace=True) ) self.b2 = nn.Sequential( nn.Conv2d(self.channel1, self.channel2, padding=(0, 1), kernel_size=(2, 3), stride=(1, 2)), nn.BatchNorm2d(self.channel2), nn.ReLU(inplace=True) ) self.blocks = self._blocks(self.channel2, self.channel2) self.fc = nn.Linear(64self.channel2, self.num_class) def _blocks(self, in_channels, out_channels): blocks = nn.ModuleList([None] self.blocks) for i in range(self.blocks): blocks[i] = nn.Sequential( nn.Conv2d(in_channels, out_channels, padding=(0,1), kernel_size=(1,3)), nn.BatchNorm2d(out_channels), nn.ReLU(inplace=True), ) in_channels = out_channels return blocks def forward(self, x): """Forward.""" x = self.b1(x) x = self.b2(x) for block in self.blocks: x = block(x) x = x.view(x.size(0), -1) x = self.fc(x) return x if name == "main": model = SimpleCnn() model.load_state_dict(torch.load('nas_results/model_12.pth')) model.eval()将这段代码从基于pytorch改为基于mindspore

def __init__(self): """Initialize.""" super().__init__() ... 3. 将nn.Sequential改为nn.SequentialCell，并且去掉inplace参数： self.b1 = nn.SequentialCell([ nn.Conv2d(1, self.channel...

优化代码class model_CNN_1(nn.Module): def init(self): super(model_CNN_1,self).init() self.conv_unit = nn.Sequential( nn.BatchNorm1d(1), nn.Conv1d(in_channels=1,out_channels=32,kernel_size=11,stride=1,padding=5), nn.LeakyReLU(), nn.BatchNorm1d(32), nn.Conv1d(in_channels=32,out_channels=64,kernel_size=11,stride=1,padding=5), nn.LeakyReLU(), nn.BatchNorm1d(64), nn.MaxPool1d(4), nn.Conv1d(in_channels=64,out_channels=128,kernel_size=3,stride=1,padding=1), nn.LeakyReLU(), nn.BatchNorm1d(128), nn.Conv1d(in_channels=128,out_channels=256,kernel_size=3,stride=1,padding=1), nn.LeakyReLU(), nn.MaxPool1d(4), nn.Dropout(0.1), ) self.dense_unit = nn.Sequential( nn.Linear(3072,1024), nn.LeakyReLU(), nn.Linear(1024,128), nn.LeakyReLU(), nn.Linear(128,4), nn.Softmax(dim=1) ) def forward(self,inputs): inputs = inputs.view(inputs.size()[0],1,inputs.size()[1]) inputs = self.conv_unit(inputs) inputs = inputs.view(inputs.size()[0],-1) inputs = self.dense_unit(inputs) return inputs

这段代码是一个用于心跳信号分类的CNN模型的定义。以下是一些针对这段代码的优化建议： 1. 使用nn.ModuleList替代nn.Sequential 在这段代码中，使用了nn.Sequential来定义卷积层和全连接层。但是，nn.Sequential只...

基于300条数据用CNN多分类预测时，训练精度特别差，代码如下class Model(Module): def init(self): super(Model, self).init() self.conv1_1 = nn.Conv2d(in_channels=3,out_channels=64,kernel_size=(3,3),padding=1) self.bn1_1 = nn.BatchNorm2d(64) self.relu1_1 = nn.ReLU() self.pool1 = nn.MaxPool2d(kernel_size=4, stride=4) self.conv2_1 = nn.Conv2d(in_channels=64,out_channels=128,kernel_size=(3,3),padding=1) self.bn2_1 = nn.BatchNorm2d(128) self.relu2_1 = nn.ReLU() self.pool2 = nn.MaxPool2d(kernel_size=2, stride=2) self.conv3_1 = nn.Conv2d(in_channels=128,out_channels=256,kernel_size=(3,3),padding=1) self.bn3_1 = nn.BatchNorm2d(256) self.relu3_1 = nn.ReLU() self.pool3 = nn.MaxPool2d(kernel_size=2, stride=2) self.conv4_1 = nn.Conv2d(in_channels=256,out_channels=512,kernel_size=(3,3)) self.bn4_1 = nn.BatchNorm2d(512) self.relu4_1 = nn.ReLU() self.conv4_2 = nn.Conv2d(in_channels=512,out_channels=512,kernel_size=(3,3)) self.bn4_2 = nn.BatchNorm2d(512) self.relu4_2 = nn.ReLU() self.pool4 = nn.MaxPool2d(kernel_size=2, stride=2) self.conv5_1 = nn.Conv2d(in_channels=512,out_channels=512,kernel_size=(3,3)) self.bn5_1 = nn.BatchNorm2d(512) self.relu5_1 = nn.ReLU() self.conv5_2 = nn.Conv2d(in_channels=512,out_channels=512,kernel_size=(3,3)) self.bn5_2 = nn.BatchNorm2d(512) self.relu5_2 = nn.ReLU() self.pool5 = nn.AdaptiveAvgPool2d(5) self.dropout1 = nn.Dropout(p=0.3) self.fc1=nn.Linear(51255,512) self.relu6=nn.ReLU() self.dropout2 = nn.Dropout(p=0.2) self.fc2=nn.Linear(512,141) ，具体如何修改代码

super(Model, self).__init__() self.conv1_1 = nn.Conv2d(in_channels=3,out_channels=64,kernel_size=(3,3),padding=1) self.bn1_1 = nn.BatchNorm2d(64) self.relu1_1 = nn.ReLU() self.pool1 = nn.MaxPool...

import torch import torch.nn as nn from torch.nn import functional as F import torch.optim as optim from torch.utils.data import DataLoader from torchvision.datasets import MNIST from torchvision.transforms import ToTensor # 构建模型 class Net(nn.Module): def init(self): super(Net, self).init() self.conv1 = nn.Conv2d(1, 10, kernel_size=5) self.conv2 = nn.Conv2d(10, 20, kernel_size=5) self.fc1 = nn.Linear(320, 50) self.fc2 = nn.Linear(50, 10) def forward(self, x): x = F.relu(F.max_pool2d(self.conv1(x), 2)) x = F.relu(F.max_pool2d(self.conv2(x), 2)) x = x.view(-1, 320) x = F.relu(self.fc1(x)) x = self.fc2(x) return F.log_softmax(x, dim=1) # 加载数据 train_dataset = MNIST(root='./data', train=True, transform=ToTensor(), download=True) train_loader = DataLoader(train_dataset, batch_size=64, shuffle=True) # 初始化模型和优化器 model = Net() optimizer = optim.SGD(model.parameters(), lr=0.01, momentum=0.5) # 训练模型 for epoch in range(10): for batch_idx, (data, target) in enumerate(train_loader): optimizer.zero_grad() output = model(data) loss = F.nll_loss(output, target) loss.backward() optimizer.step() if batch_idx % 100 == 0: print('Train Epoch: {} [{}/{} ({:.0f}%)]\\tLoss: {:.6f}'.format( epoch, batch_idx * len(data), len(train_loader.dataset), 100. * batch_idx / len(train_loader), loss.item())) # 保存模型 torch.save(model.state_dict(), 'model.pt')

这是一个使用 PyTorch 框架训练一个简单的卷积神经网络模型（Convolutional Neural Network, CNN）来对 MNIST 手写数字数据集进行分类的代码。首先，定义了一个名为 Net 的类，继承自 nn.Module，这个类包含了卷...

#定义一个get_fea类函数，返回类变量x0 def get_fea_x0(self): return self.fea_x0 def get_fea_x1(self): return self.fea_x1 def get_fea_x2(self): return self.fea_x2 def get_fea_x3(self): return self.fea_x3 卷积神经网络已建立，利用上述代码，在此基础上修改出pytorch框架下调用指定层的tsne 中文回答 2023/5/26 11:07:08

super(CNN, self).__init__() self.conv1 = torch.nn.Conv2d(3, 32, 3, padding=1) self.conv2 = torch.nn.Conv2d(32, 64, 3, padding=1) self.conv3 = torch.nn.Conv2d(64, 128, 3, padding=1) self.fc1 = ...

import tensorflow as tf from tensorflow.keras.layers import Dense, Flatten, Conv2D, MaxPool2D, Dropoutfrom tensorflow.keras import Model# 在GPU上运算时，因为cuDNN库本身也有自己的随机数生成器，所以即使tf设置了seed，也不会每次得到相同的结果tf.random.set_seed(100)mnist = tf.keras.datasets.mnist(X_train, y_train), (X_test, y_test) = mnist.load_data()X_train, X_test = X_train/255.0, X_test/255.0# 将特征数据集从(N,32,32)转变成(N,32,32,1),因为Conv2D需要(NHWC)四阶张量结构X_train = X_train[..., tf.newaxis] X_test = X_test[..., tf.newaxis]batch_size = 64# 手动生成mini_batch数据集train_ds = tf.data.Dataset.from_tensor_slices((X_train, y_train)).shuffle(10000).batch(batch_size)test_ds = tf.data.Dataset.from_tensor_slices((X_test, y_test)).batch(batch_size)class Deep_CNN_Model(Model): def init(self): super(Deep_CNN_Model, self).init() self.conv1 = Conv2D(32, 5, activation='relu') self.pool1 = MaxPool2D() self.conv2 = Conv2D(64, 5, activation='relu') self.pool2 = MaxPool2D() self.flatten = Flatten() self.d1 = Dense(128, activation='relu') self.dropout = Dropout(0.2) self.d2 = Dense(10, activation='softmax') def call(self, X): # 无需在此处增加training参数状态。只需要在调用Model.call时，传递training参数即可 X = self.conv1(X) X = self.pool1(X) X = self.conv2(X) X = self.pool2(X) X = self.flatten(X) X = self.d1(X) X = self.dropout(X) # 无需在此处设置training状态。只需要在调用Model.call时，传递training参数即可 return self.d2(X)model = Deep_CNN_Model()loss_object = tf.keras.losses.SparseCategoricalCrossentropy()optimizer = tf.keras.optimizers.Adam()train_loss = tf.keras.metrics.Mean(name='train_loss')train_accuracy = tf.keras.metrics.SparseCategoricalAccuracy(name='train_accuracy')test_loss = tf.keras.metrics.Mean(name='test_loss')test_accuracy = tf.keras.metrics.SparseCategoricalAccuracy(name='test_accuracy')# TODO：定义单批次的训练和预测操作@tf.functiondef train_step(images, labels): ...... @tf.functiondef test_step(images, labels): ...... # TODO：执行完整的训练过程EPOCHS = 10for epoch in range(EPOCHS)补全代码

super(Deep_CNN_Model, self).__init__() self.conv1 = Conv2D(32, 5, activation='relu') self.pool1 = MaxPool2D() self.conv2 = Conv2D(64, 5, activation='relu') self.pool2 = MaxPool2D() self.flatten ...

import torch import torch.nn as nn import torch.optim as optim import torchvision.datasets as datasets import torchvision.transforms as transforms # 定义超参数 batch_size = 64 learning_rate = 0.001 num_epochs = 10 # 定义数据预处理 transform = transforms.Compose([ transforms.ToTensor(), # 转换为Tensor类型 transforms.Normalize((0.1307,), (0.3081,)) # 标准化，使得均值为0，标准差为1 ]) # 加载MNIST数据集 train_dataset = datasets.MNIST(root='C:/MNIST', train=True, transform=transform, download=True) test_dataset = datasets.MNIST(root='C:/MNIST', train=False, transform=transform, download=True) train_loader = torch.utils.data.DataLoader(dataset=train_dataset, batch_size=batch_size, shuffle=True) test_loader = torch.utils.data.DataLoader(dataset=test_dataset, batch_size=batch_size, shuffle=False) # 定义CNN模型 class CNN(nn.Module): def init(self): super(CNN, self).init() self.conv1 = nn.Conv2d(1, 32, kernel_size=3, stride=1, padding=1) self.bn1 = nn.BatchNorm2d(32) self.relu1 = nn.ReLU() self.conv2 = nn.Conv2d(32, 64, kernel_size=3, stride=1, padding=1) self.bn2 = nn.BatchNorm2d(64) self.relu2 = nn.ReLU() self.pool = nn.MaxPool2d(kernel_size=2, stride=2) self.fc1 = nn.Linear(64 * 7 * 7, 128) self.relu3 = nn.ReLU() self.fc2 = nn.Linear(128, 10) def forward(self, x): out = self.conv1(x) out = self.bn1(out) out = self.relu1(out) out = self.conv2(out) out = self.bn2(out) out = self.relu2(out) out = self.pool(out) out = out.view(-1, 64 * 7 * 7) out = self.fc1(out) out = self.relu3(out) out = self.fc2(out) return out # 实例化模型并定义损失函数和优化器 model = CNN() criterion = nn.CrossEntropyLoss() optimizer = optim.Adam(model.parameters(), lr=learning_rate) # 训练模型 total_step = len(train_loader) for epoch in range(num_epochs): for i, (images, labels) in enumerate(train_loader): # 前向传播 outputs = model(images) loss = criterion(outputs, labels) # 反向传播和优化 optimizer.zero_grad() loss.backward() optimizer.step() # 每100个batch打印一次训练信息 if (i+1) % 100 == 0: print('Epoch [{}/{}], Step [{}/{}], Loss: {:.4f}' .format(epoch+1, num_epochs, i+1, total_step, loss.item())) # 测试模型 model.eval() # 进入测试模式，关闭Dropout和BatchNormalization层 with torch.no_grad(): correct = 0 total = 0 for images, labels in test_loader: outputs = model(images) _, predicted = torch.max(outputs.data, 1) total += labels.size(0) correct += (predicted == labels).sum().item() print('Test Accuracy of the model on the 10000 test images: {} %'.format(100 * correct / total))运行一下此代码

好的，运行这段代码需要先安装PyTorch库。如果已经安装了PyTorch库，可以直接在命令行或者Python IDE中运行这段代码，或者将这段代码保存为一个.py文件然后运行。在运行之前，需要将代码中的数据集路径修改为本地...

写出将结构写在一个sequtial中的代码结构与此相同 class CNN(nn.Module): # def init(self): # super(CNN, self).init() # self.conv1 = nn.Conv2d(3, 32, 3) # self.conv2 = nn.Conv2d(32, 64, 3) # self.conv3 = nn.Conv2d(64, 128, 3) # self.conv4 = nn.Conv2d(128, 256, 3) # self.fc1 = nn.Linear(6400, 1024) # self.fc2 = nn.Linear(1024, 512) # self.fc3 = nn.Linear(512, 128) # self.fc4 = nn.Linear(128, 10) # def forward(self, x): # # 3 x 32 x 32 # x = torch.relu(self.conv1(x)) # 32 x 30 x 30 # x = nn.BatchNorm2d(32).to("cuda")(x) # 32 x 30 x 30 # x = torch.relu(self.conv2(x)) # 64 x 28 x 28 # x = torch.max_pool2d(x, 2) # 64 x 14 x 14 # x = torch.relu(self.conv3(x)) # 128 x 12 x 12 # x = nn.BatchNorm2d(128).to("cuda")(x) # 128 x 12 x 12 # x = torch.relu(self.conv4(x)) # 256 x 10 x 10 # x = torch.max_pool2d(x, 2) # 256 x 5 x 5 # x = x.view(-1, 6400) # x = torch.relu(self.fc1(x)) # x = torch.tanh(self.fc2(x)) # x = torch.relu(self.fc3(x)) # x = self.fc4(x) # return x

super(CNN, self).__init__() self.model = nn.Sequential( nn.Conv2d(3, 32, 3), nn.ReLU(), nn.BatchNorm2d(32), nn.Conv2d(32, 64, 3), nn.ReLU(), nn.MaxPool2d(2), nn.Conv2d(64, 128, 3), nn.ReLU()...

class Classifier(nn.Module): def init(self): super(Classifier, self).init() # torch.nn.Conv2d(in_channels, out_channels, kernel_size, stride, padding) # torch.nn.MaxPool2d(kernel_size, stride, padding) # input 维度 [3, 128, 128] self.cnn = nn.Sequential( nn.Conv2d(3, 64, 3, 1, 1), # [64, 128, 128] nn.BatchNorm2d(64), nn.ReLU(), nn.MaxPool2d(2, 2, 0), # [64, 64, 64] nn.Conv2d(64, 128, 3, 1, 1), # [128, 64, 64] nn.BatchNorm2d(128), nn.ReLU(), nn.MaxPool2d(2, 2, 0), # [128, 32, 32] nn.Conv2d(128, 256, 3, 1, 1), # [256, 32, 32] nn.BatchNorm2d(256), nn.ReLU(), nn.MaxPool2d(2, 2, 0), # [256, 16, 16] nn.Conv2d(256, 512, 3, 1, 1), # [512, 16, 16] nn.BatchNorm2d(512), nn.ReLU(), nn.MaxPool2d(2, 2, 0), # [512, 8, 8] nn.Conv2d(512, 512, 3, 1, 1), # [512, 8, 8] nn.BatchNorm2d(512), nn.ReLU(), nn.MaxPool2d(2, 2, 0), # [512, 4, 4] ) self.fc = nn.Sequential( nn.Linear(512 * 4 * 4, 1024), nn.ReLU(), nn.Linear(1024, 512), nn.ReLU(), nn.Linear(512, 11) ) def forward(self, x): out = self.cnn(x) out = out.view(out.size()[0], -1) return self.fc(out) print("Model complicated")

这段代码定义了一个卷积神经网络分类器。它包含了5个卷积层和3个全连接层。在卷积层中，每个卷积层后面都跟着一个批归一化层和一个ReLU激活函数，最后一个卷积层后面没有激活函数。每个卷积层后面都跟着一个最大池化...

为基于cnn实现书法字体风格识别的python代码设计编写pyqt的gui界面，该程序包含以下几个模块（class MainWindow(QMainWindow)，def load_model(self)，def open_image(self)，def preprocess_images(self, image_paths)，def predict_images(self)，def display_images(self, image_paths)，def classify_image(self)）要求按一次“选择图片”按钮可以直接输入五张图片，并且按一次识别图片按钮之后一次性输出五个结果：class LeNet5(nn.Module): def init(self, num_class=10): super(LeNet5, self).init() self.conv1 = nn.Conv2d(3, 8, 5) self.pool1 = nn.AvgPool2d((2, 2)) self.conv2 = nn.Conv2d(8, 16, 5) self.pool2 = nn.AvgPool2d((2, 2)) self.conv3 = nn.Conv2d(16, 32, 5) self.relu = nn.ReLU() self.fc1 = nn.Linear(28800, 1024) self.fc2 = nn.Linear(1024, num_class) # 实现LeNet5模型的前向传播过程。输入通过卷积层、激活函数和池化层进行特征提取，然后通过全连接层进行分类。 def forward(self, x): # x: torch.Size([32, 3, 150, 150]) x = self.conv1(x) # torch.Size([32, 8, 146, 146]) x = self.relu(x) x = self.pool1(x) # torch.Size([32, 8, 73, 73]) x = self.conv2(x) # torch.Size([32, 16, 69, 69]) x = self.relu(x) x = self.pool2(x) # torch.Size([32, 16, 34, 34]) x = self.conv3(x) # torch.Size([32, 32, 30, 30]) x = self.relu(x) x = x.flatten(start_dim=1) # torch.Size([32, 28800]) x = self.fc1(x) # torch.Size([32, 2024]) x = self.relu(x) x = self.fc2(x) # torch.Size([32, 4]) return x

def __init__(self, num_class=10): super(LeNet5, self).__init__() self.conv1 = nn.Conv2d(3, 8, 5) self.pool1 = nn.AvgPool2d((2, 2)) self.conv2 = nn.Conv2d(8, 16, 5) self.pool2 = nn.AvgPool2d((2, ...

import torch import torch.nn as nn import torch.nn.functional as F import torchvision.transforms as transforms from PIL import Image # 定义一个简单的卷积神经网络（CNN）用于特征提取 class Net(nn.Module): def init(self): super(Net, self).init() self.conv1 = nn.Conv2d(3, 6, 5) self.pool = nn.MaxPool2d(2, 2) self.conv2 = nn.Conv2d(6, 16, 5) self.fc1 = nn.Linear(16 * 5 * 5, 120) self.fc2 = nn.Linear(120, 84) self.fc3 = nn.Linear(84, 10) def forward(self, x): x = self.pool(F.relu(self.conv1(x))) x = self.pool(F.relu(self.conv2(x))) x = x.view(-1, 16 * 5 * 5) x = F.relu(self.fc1(x)) x = F.relu(self.fc2(x)) x = self.fc3(x) return x # 加载图像 img = Image.open('test.jpg') # 对图像进行预处理，将其转换为模型所需的输入格式 transform = transforms.Compose([ transforms.Resize(256), transforms.CenterCrop(224), transforms.ToTensor(), transforms.Normalize(mean=[0.485, 0.456, 0.406], std=[0.229, 0.224, 0.225]) ]) img_tensor = transform(img).unsqueeze(0) # 初始化模型并对图像进行特征提取 model = Net() features = model(img_tensor) # 将特征图还原回原始图像大小 upsample = nn.Upsample(scale_factor=2, mode='nearest') upsampled_features = upsample(features) # 显示原始图像和还原后的特征图 img.show() tensor_to_image = transforms.ToPILImage() upsampled_image = tensor_to_image(upsampled_features.squeeze(0).detach().cpu()) upsampled_image.show()，上述代码出现问题：RuntimeError: shape '[-1, 400]' is invalid for input of size 44944

这个错误提示表明你的代码在某个地方使用了错误的形状(-1,400)，而实际上输入的大小为44944，不能匹配。具体来说，这可能是由于在模型的某个层中使用了错误的形状导致的。为了解决这个错误，你需要检查代码中所有与...

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