使用了_Qs = _Qs.type(torch.int64)还是出现那个问题

时间: 2024-02-26 08:52:42 浏览: 22
在使用`gather`函数时,如果出现`RuntimeError: gather(): Expected dtype int64 for index`错误,可能是因为你正在使用的是非int64类型的张量进行索引,或者索引张量中包含了非int64类型的值。以下是一些可能的解决方法: 1. 确保你的索引张量是int64类型。可以使用`.type(torch.int64)`方法将整个张量转换为int64类型。 2. 确保你的索引张量中不包含非int64类型的值。可以使用`.type(torch.int64)`方法将整个张量转换为int64类型,然后检查索引张量中是否有非int64类型的值。 3. 确保你使用的是int64类型的张量进行索引。可以使用`.type(torch.int64)`方法将整个张量转换为int64类型,然后再进行索引操作。 如果你已经尝试了以上解决方法,但仍然遇到了问题,请提供更多的代码和错误信息,以便我更好地帮助你解决问题。
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_Q = torch.gather(_Qs, 1, _action.to(torch.int64)) #摇摆棍 RuntimeError: Index tensor must have the same number of dimensions as input tensor

这个错误通常是因为 `_action` 张量的维度比 `_Qs` 张量的维度少了一维。在 `torch.gather()` 函数中,第二个参数 `_action` 是用于从 `_Qs` 张量中收集值的索引。这个索引张量的维度应该与 `_Qs` 张量的维度相同。如果 `_Qs` 张量的维度是 `(batch_size, num_actions)`,那么 `_action` 张量的维度应该是 `(batch_size, 1)`。 你可以尝试在使用 `torch.gather()` 函数之前给 `_action` 张量增加一维,例如: ```python _action = _action.unsqueeze(1) _Q = torch.gather(_Qs, 1, _action.to(torch.int64)) ``` 这将会在 `_action` 张量的第二个维度上增加一个维度,使其维度变为 `(batch_size, 1)`。 如果你需要进一步帮助,请提供更多的上下文和代码。

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 模型的前四个卷积层和最后一个全连接层作为特征提取器,其中前四个卷积层被分别用于提取不同层级的特征。然后,通过几个额外的卷积层和全连接层将提取的特征转换为对输入图像中物体类别的预测。其中,提取的特征被分别送入四个全连接层中进行分类。 具体来说,代码中的各个部分的功能如下: - `features_list = list(vgg19.features.children())`:获取 VGG19 模型的所有卷积层。 - `self.conv2_2 = torch.nn.Sequential(*features_list[:13])`:将前 13 层卷积层作为 conv2_2 层。 - `self.conv3_4 = torch.nn.Sequential(*features_list[13:26])`:将第 14 层到第 26 层卷积层作为 conv3_4 层。 - `self.conv4_4 = torch.nn.Sequential(*features_list[26: 39])`:将第 27 层到第 39 层卷积层作为 conv4_4 层。 - `self.conv5_4 = torch.nn.Sequential(*features_list[39:-1])`:将第 40 层到倒数第二层卷积层作为 conv5_4 层。 - `self.tail_layer = features_list[-1]`:将最后一层卷积层作为尾部层。 - `self.fc_layers = list(vgg19.classifier.children())[:-2]`:获取 VGG19 模型的所有全连接层,但不包括最后两层。 - `self.fc_layers = torch.nn.Sequential(*list(self.fc_layers))`:将所有全连接层组成一个新的连续的全连接层。 - `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))`:将 conv2_2 层的输出进行最大池化和卷积操作,以提取更高级别的特征。 - `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))`:将 conv3_4 层的输出进行最大池化和卷积操作,以提取更高级别的特征。 - `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))`:将 conv4_4 层的输出进行最大池化和卷积操作,以提取更高级别的特征。 - `self.extract_3 = torch.nn.Sequential(torch.nn.Conv2d(512, self.k, kernel_size=1, stride=1))`:将 conv5_4 层的输出进行卷积操作,以提取更高级别的特征。 - `self.fc0 = torch.nn.Linear(196, 1, bias=True)`:定义一个输入为 196 的全连接层,用于分类。 - `self.fc1 = torch.nn.Linear(196, 1, bias=True)`:定义第二个输入为 196 的全连接层,用于分类。 - `self.fc2 = torch.nn.Linear(196, 1, bias=True)`:定义第三个输入为 196 的全连接层,用于分类。 - `self.fc3 = torch.nn.Linear(196, 1, bias=True)`:定义第四个输入为 196 的全连接层,用于分类。 - `self.fc4 = torch.nn.Linear(4096, 2 * k, bias=True)`:定义一个输入为 4096 的全连接层,用于分类。 - `self.bn1 = torch.nn.BatchNorm1d(k)`:定义一个 Batch Normalization 层,用于归一化数据。 - `self.bn2 = torch.nn.BatchNorm1d(k)`:定义第二个 Batch Normalization 层,用于归一化数据。 - `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。

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这段代码中加一个test loss功能 class LSTM(nn.Module): def __init__(self, input_size, hidden_size, num_layers, output_size, batch_size, device): super().__init__() self.device = device self.input_size = input_size self.hidden_size = hidden_size self.num_layers = num_layers self.output_size = output_size self.num_directions = 1 # 单向LSTM self.batch_size = batch_size self.lstm = nn.LSTM(self.input_size, self.hidden_size, self.num_layers, batch_first=True) self.linear = nn.Linear(65536, self.output_size) def forward(self, input_seq): h_0 = torch.randn(self.num_directions * self.num_layers, self.batch_size, self.hidden_size).to(self.device) c_0 = torch.randn(self.num_directions * self.num_layers, self.batch_size, self.hidden_size).to(self.device) output, _ = self.lstm(input_seq, (h_0, c_0)) pred = self.linear(output.contiguous().view(self.batch_size, -1)) return pred if __name__ == '__main__': # 加载已保存的模型参数 saved_model_path = '/content/drive/MyDrive/危急值/model/dangerous.pth' device = 'cuda:0' lstm_model = LSTM(input_size=1, hidden_size=64, num_layers=1, output_size=3, batch_size=256, device='cuda:0').to(device) state_dict = torch.load(saved_model_path) lstm_model.load_state_dict(state_dict) dataset = ECGDataset(X_train_df.to_numpy()) dataloader = DataLoader(dataset, batch_size=256, shuffle=True, num_workers=0, drop_last=True) loss_fn = nn.CrossEntropyLoss() optimizer = optim.SGD(lstm_model.parameters(), lr=1e-4) for epoch in range(200000): print(f'epoch:{epoch}') lstm_model.train() epoch_bar = tqdm(dataloader) for x, y in epoch_bar: optimizer.zero_grad() x_out = lstm_model(x.to(device).type(torch.cuda.FloatTensor)) loss = loss_fn(x_out, y.long().to(device)) loss.backward() epoch_bar.set_description(f'loss:{loss.item():.4f}') optimizer.step() if epoch % 100 == 0 or epoch == epoch - 1: torch.save(lstm_model.state_dict(), "/content/drive/MyDrive/危急值/model/dangerous.pth") print("权重成功保存一次")

下面的这段python代码,哪里有错误,修改一下:import numpy as np import matplotlib.pyplot as plt import pandas as pd import torch import torch.nn as nn from torch.autograd import Variable from sklearn.preprocessing import MinMaxScaler training_set = pd.read_csv('CX2-36_1971.csv') training_set = training_set.iloc[:, 1:2].values def sliding_windows(data, seq_length): x = [] y = [] for i in range(len(data) - seq_length): _x = data[i:(i + seq_length)] _y = data[i + seq_length] x.append(_x) y.append(_y) return np.array(x), np.array(y) sc = MinMaxScaler() training_data = sc.fit_transform(training_set) seq_length = 1 x, y = sliding_windows(training_data, seq_length) train_size = int(len(y) * 0.8) test_size = len(y) - train_size dataX = Variable(torch.Tensor(np.array(x))) dataY = Variable(torch.Tensor(np.array(y))) trainX = Variable(torch.Tensor(np.array(x[1:train_size]))) trainY = Variable(torch.Tensor(np.array(y[1:train_size]))) testX = Variable(torch.Tensor(np.array(x[train_size:len(x)]))) testY = Variable(torch.Tensor(np.array(y[train_size:len(y)]))) class LSTM(nn.Module): def __init__(self, num_classes, input_size, hidden_size, num_layers): super(LSTM, self).__init__() self.num_classes = num_classes self.num_layers = num_layers self.input_size = input_size self.hidden_size = hidden_size self.seq_length = seq_length self.lstm = nn.LSTM(input_size=input_size, hidden_size=hidden_size, num_layers=num_layers, batch_first=True) self.fc = nn.Linear(hidden_size, num_classes) def forward(self, x): h_0 = Variable(torch.zeros( self.num_layers, x.size(0), self.hidden_size)) c_0 = Variable(torch.zeros( self.num_layers, x.size(0), self.hidden_size)) # Propagate input through LSTM ula, (h_out, _) = self.lstm(x, (h_0, c_0)) h_out = h_out.view(-1, self.hidden_size) out = self.fc(h_out) return out num_epochs = 2000 learning_rate = 0.001 input_size = 1 hidden_size = 2 num_layers = 1 num_classes = 1 lstm = LSTM(num_classes, input_size, hidden_size, num_layers) criterion = torch.nn.MSELoss() # mean-squared error for regression optimizer = torch.optim.Adam(lstm.parameters(), lr=learning_rate) # optimizer = torch.optim.SGD(lstm.parameters(), lr=learning_rate) runn = 10 Y_predict = np.zeros((runn, len(dataY))) # Train the model for i in range(runn): print('Run: ' + str(i + 1)) for epoch in range(num_epochs): outputs = lstm(trainX) optimizer.zero_grad() # obtain the loss function loss = criterion(outputs, trainY) loss.backward() optimizer.step() if epoch % 100 == 0: print("Epoch: %d, loss: %1.5f" % (epoch, loss.item())) lstm.eval() train_predict = lstm(dataX) data_predict = train_predict.data.numpy() dataY_plot = dataY.data.numpy() data_predict = sc.inverse_transform(data_predict) dataY_plot = sc.inverse_transform(dataY_plot) Y_predict[i,:] = np.transpose(np.array(data_predict)) Y_Predict = np.mean(np.array(Y_predict)) Y_Predict_T = np.transpose(np.array(Y_Predict))

import torch import torch.nn as nn import torch.optim as optim import numpy as np 定义基本循环神经网络模型 class RNNModel(nn.Module): def init(self, rnn_type, input_size, hidden_size, output_size, num_layers=1): super(RNNModel, self).init() self.rnn_type = rnn_type self.input_size = input_size self.hidden_size = hidden_size self.output_size = output_size self.num_layers = num_layers self.encoder = nn.Embedding(input_size, hidden_size) if rnn_type == 'RNN': self.rnn = nn.RNN(hidden_size, hidden_size, num_layers) elif rnn_type == 'GRU': self.rnn = nn.GRU(hidden_size, hidden_size, num_layers) self.decoder = nn.Linear(hidden_size, output_size) def forward(self, input, hidden): input = self.encoder(input) output, hidden = self.rnn(input, hidden) output = output.view(-1, self.hidden_size) output = self.decoder(output) return output, hidden def init_hidden(self, batch_size): if self.rnn_type == 'RNN': return torch.zeros(self.num_layers, batch_size, self.hidden_size) elif self.rnn_type == 'GRU': return torch.zeros(self.num_layers, batch_size, self.hidden_size) 定义数据集 with open('汉语音节表.txt', encoding='utf-8') as f: chars = f.readline() chars = list(chars) idx_to_char = list(set(chars)) char_to_idx = dict([(char, i) for i, char in enumerate(idx_to_char)]) corpus_indices = [char_to_idx[char] for char in chars] 定义超参数 input_size = len(idx_to_char) hidden_size = 256 output_size = len(idx_to_char) num_layers = 1 batch_size = 32 num_steps = 5 learning_rate = 0.01 num_epochs = 100 定义模型、损失函数和优化器 model = RNNModel('RNN', input_size, hidden_size, output_size, num_layers) criterion = nn.CrossEntropyLoss() optimizer = optim.Adam(model.parameters(), lr=learning_rate) 训练模型 for epoch in range(num_epochs): model.train() hidden = model.init_hidden(batch_size) loss = 0 for X, Y in data_iter_consecutive(corpus_indices, batch_size, num_steps): optimizer.zero_grad() hidden = hidden.detach() output, hidden = model(X, hidden) loss = criterion(output, Y.view(-1)) loss.backward() torch.nn.utils.clip_grad_norm_(model.parameters(), max_norm=1.0) optimizer.step() if epoch % 10 == 0: print(f"Epoch {epoch}, Loss: {loss.item()}")请正确缩进代码

修改一下这段代码在pycharm中的实现,import pandas as pd import numpy as np from sklearn.model_selection import train_test_split import torch import torch.nn as nn import torch.nn.functional as F import torch.optim as optim #from torchvision import datasets,transforms import torch.utils.data as data #from torch .nn:utils import weight_norm import matplotlib.pyplot as plt from sklearn.metrics import precision_score from sklearn.metrics import recall_score from sklearn.metrics import f1_score from sklearn.metrics import cohen_kappa_score data_ = pd.read_csv(open(r"C:\Users\zhangjinyue\Desktop\rice.csv"),header=None) data_ = np.array(data_).astype('float64') train_data =data_[:,:520] train_Data =np.array(train_data).astype('float64') train_labels=data_[:,520] train_labels=np.array(train_data).astype('float64') train_data,train_data,train_labels,train_labels=train_test_split(train_data,train_labels,test_size=0.33333) train_data=torch.Tensor(train_data) train_data=torch.LongTensor(train_labels) train_data=train_data.reshape(-1,1,20,26) train_data=torch.Tensor(train_data) train_data=torch.LongTensor(train_labels) train_data=train_data.reshape(-1,1,20,26) start_epoch=1 num_epoch=1 BATCH_SIZE=70 Ir=0.001 classes=('0','1','2','3','4','5') device=torch.device("cuda"if torch.cuda.is_available()else"cpu") torch.backends.cudnn.benchmark=True best_acc=0.0 train_dataset=data.TensorDataset(train_data,train_labels) test_dataset=data.TensorDataset(train_data,train_labels) train_loader=torch.utills.data.DataLoader(dtaset=train_dataset,batch_size=BATCH_SIZE,shuffle=True) test_loader=torch.utills.data.DataLoader(dtaset=train_dataset,batch_size=BATCH_SIZE,shuffle=True)

class NLayerDiscriminator(nn.Module): def init(self, input_nc=3, ndf=64, n_layers=3, norm_layer=nn.BatchNorm2d, use_sigmoid=False, use_parallel=True): super(NLayerDiscriminator, self).init() self.use_parallel = use_parallel if type(norm_layer) == functools.partial: use_bias = norm_layer.func == nn.InstanceNorm2d else: use_bias = norm_layer == nn.InstanceNorm2d self.conv1 = nn.Conv2d(input_nc, ndf, kernel_size=3, padding=1) self.conv_offset1 = nn.Conv2d(ndf, 18, kernel_size=3, stride=1, padding=1) init_offset1 = torch.Tensor(np.zeros([18, ndf, 3, 3])) self.conv_offset1.weight = torch.nn.Parameter(init_offset1) # 初始化为0 self.conv_mask1 = nn.Conv2d(ndf, 9, kernel_size=3, stride=1, padding=1) init_mask1 = torch.Tensor(np.zeros([9, ndf, 3, 3]) + np.array([0.5])) self.conv_mask1.weight = torch.nn.Parameter(init_mask1) # 初始化为0.5 kw = 4 padw = int(np.ceil((kw-1)/2)) nf_mult = 1 for n in range(1, n_layers): nf_mult_prev = nf_mult nf_mult = min(2n, 8) self.sequence2 = [ nn.Conv2d(ndf * nf_mult_prev, ndf * nf_mult, kernel_size=kw, stride=2, padding=padw, bias=use_bias), norm_layer(ndf * nf_mult), nn.LeakyReLU(0.2, True) ] nf_mult_prev = nf_mult nf_mult = min(2n_layers, 8) self.sequence2 += [ nn.Conv2d(ndf * nf_mult_prev, ndf * nf_mult, kernel_size=kw, stride=1, padding=padw, bias=use_bias), norm_layer(ndf * nf_mult), nn.LeakyReLU(0.2, True) ] self.sequence2 += [nn.Conv2d(ndf * nf_mult, 1, kernel_size=kw, stride=1, padding=padw)] if use_sigmoid: self.sequence2 += [nn.Sigmoid()] def forward(self, input): input = self.conv1(input) offset1 = self.conv_offset1(input) mask1 = torch.sigmoid(self.conv_mask1(input)) sequence1 = [ torchvision.ops.deform_conv2d(input=input, offset=offset1, weight=self.conv1.weight, mask=mask1, padding=(1, 1)) ] sequence2 = sequence1 + self.sequence2 self.model = nn.Sequential(*sequence2) nn.LeakyReLU(0.2, True) return self.model(input),上述代码中出现错误:RuntimeError: Expected weight_c.size(1) * n_weight_grps == input_c.size(1) to be true, but got false. (Could this error message be improved? If so, please report an enhancement request to PyTorch.),请问如何解决,给出修改后的代码

Defines the PatchGAN discriminator with the specified arguments. class NLayerDiscriminator(nn.Module): def init(self, input_nc=3, ndf=64, n_layers=3, norm_layer=nn.BatchNorm2d, use_sigmoid=False, use_parallel=True): super(NLayerDiscriminator, self).init() self.use_parallel = use_parallel if type(norm_layer) == functools.partial: use_bias = norm_layer.func == nn.InstanceNorm2d else: use_bias = norm_layer == nn.InstanceNorm2d self.conv1 = nn.Conv2d(input_nc, ndf, kernel_size=3, padding=1) self.conv_offset1 = nn.Conv2d(ndf, 18, kernel_size=3, stride=1, padding=1) init_offset1 = torch.Tensor(np.zeros([18, ndf, 3, 3])) self.conv_offset1.weight = torch.nn.Parameter(init_offset1) # 初始化为0 self.conv_mask1 = nn.Conv2d(ndf, 9, kernel_size=3, stride=1, padding=1) init_mask1 = torch.Tensor(np.zeros([9, ndf, 3, 3]) + np.array([0.5])) self.conv_mask1.weight = torch.nn.Parameter(init_mask1) # 初始化为0.5 kw = 4 padw = int(np.ceil((kw-1)/2)) nf_mult = 1 for n in range(1, n_layers): nf_mult_prev = nf_mult nf_mult = min(2n, 8) self.sequence2 = [ nn.Conv2d(ndf * nf_mult_prev, ndf * nf_mult, kernel_size=kw, stride=2, padding=padw, bias=use_bias), norm_layer(ndf * nf_mult), nn.LeakyReLU(0.2, True) ] nf_mult_prev = nf_mult nf_mult = min(2n_layers, 8) self.sequence2 += [ nn.Conv2d(ndf * nf_mult_prev, ndf * nf_mult, kernel_size=kw, stride=1, padding=padw, bias=use_bias), norm_layer(ndf * nf_mult), nn.LeakyReLU(0.2, True) ] self.sequence2 += [nn.Conv2d(ndf * nf_mult, 1, kernel_size=kw, stride=1, padding=padw)] if use_sigmoid: self.sequence2 += [nn.Sigmoid()] def forward(self, input): input = self.conv1(input) offset1 = self.conv_offset1(input) mask1 = torch.sigmoid(self.conv_mask1(input)) sequence1 = [ torchvision.ops.deform_conv2d(input=input, offset=offset1, weight=self.conv1.weight, mask=mask1, padding=(1, 1)) 上述代码中出现错误:RuntimeError: Expected weight_c.size(1) * n_weight_grps == input_c.size(1) to be true, but got false. (Could this error message be improved? If so, please report an enhancement request to PyTorch.),请问如何解决,给出修改后的代码

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