def test(): with torch.no_grad(): for data in valid_loader: val_label, val_input = data val_input = val_input.to(torch.float32) val_input, val_label = val_input.to(device), val_label.to(device) val_pred = model.forward(x=val_input) _, predicted = torch.max(val_pred, dim=1) # 找到出现次数最多的元素的索引 most_common_index = torch.argmax(torch.bincount(val_pred)) # 获取出现次数最多的值 most_common_value = val_pred[most_common_index] return most_common_value.item() #return predicted if __name__ == '__main__': #startTime = time.time() model.load_state_dict(torch.load('model.pth')) recognize = test() #endTime = time.time() #print("GPU耗时： ", endTime - startTime) print(recognize) 出现“"bincount_cpu" not implemented for 'Float'” 怎么修改

with torch.no_grad(): for data in valid_loader: val_label, val_input = data val_input = val_input.to(torch.float32) val_input, val_label = val_input.to(device), val_label.to(device) val_pred = model.forward(x=val_input)获取训练所得val_pred 中出现次数最多的值

在你的代码中，你可以使用torch.argmax()函数来计算val_pred中出现次数最多的值的索引，然后使用该索引从val_pred中获取对应的值。下面是一个示例代码： python import torch # 示例的val_pred张量 val_pred = ...

with torch.no_grad(): for val_data in validate_loader: val_images, val_labels = val_data outputs = net(val_images.to(device)) # eval model only have last output layer loss = loss_function(outputs, val_labels.to(device)) val_loss += loss.item() predict_y = torch.max(outputs, dim=1)[1] acc += (predict_y == val_labels.to(device)).sum().item() val_accurate = acc / val_num val_loss = val_loss /val_num if val_accurate > best_acc: best_acc = val_accurate torch.save(net.state_dict(), save_path) print('[epoch %d] train_loss: %.3f test_loss: %.3f test_accuracy: %.3f' % (epoch + 1, running_loss / step, val_loss, val_accurate)) print('Finished Training')

首先，我们使用with torch.no_grad()语句块来关闭梯度计算，以便在验证过程中不产生梯度。然后，我们遍历验证集中的所有mini-batch，对每个mini-batch进行预测，并计算预测结果和标签数据之间的损失函数值。接着，...

with torch.no_grad(): # validate_loader迭代器对验证集进行迭代，每次迭代都会计算模型的输出和损失，并记录最佳的准确率和模型参数 val_bar = tqdm(validate_loader, file=sys.stdout) for val_data in val_bar: val_images, val_labels = val_data outputs = net(val_images.to(device)) predict_y = torch.max(outputs, dim=1)[1] acc += torch.eq(predict_y, val_labels.to(device)).sum().item() val_accurate = acc / val_num writer.add_scalar('Loss/test', running_loss / train_steps, epoch) writer.add_scalar('Accuracy/test', val_accurate, epoch) print('[epoch %d] val_loss: %.3f val_accuracy: %.3f' % (epoch + 1, running_loss / train_steps, val_accurate)) if val_accurate > best_acc: best_acc = val_accurate torch.save(net.state_dict(), save_path) writer.add_graph(mynet, input) writer.close() print('Finished Training') 请详细解释这段代码

1. 使用PyTorch提供的no_grad()上下文管理器，关闭自动求导功能，避免在验证集上浪费计算资源。 2. 使用PyTorch提供的tqdm库，对验证集数据进行迭代，每次迭代都计算模型的输出和损失，并记录最佳的准确率和模型...

for epoch in range(args.start_epoch, args.epochs): # train for one epoch train_loss, train_EPE = train(train_loader, model, optimizer, epoch, train_writer,scheduler) train_writer.add_scalar('mean EPE', train_EPE, epoch) # evaluate on test dataset with torch.no_grad(): EPE = validate(val_loader, model, epoch) test_writer.add_scalar('mean EPE', EPE, epoch) if best_EPE < 0: best_EPE = EPE is_best = EPE < best_EPE best_EPE = min(EPE, best_EPE) save_checkpoint({ 'epoch': epoch + 1, 'arch': args.arch, 'state_dict': model.module.state_dict(), 'best_EPE': best_EPE, 'div_flow': args.div_flow }, is_best, save_path)

- with torch.no_grad(): 声明一个上下文管理器，关闭梯度计算。在该上下文中，不会进行参数的更新和反向传播。 - EPE = validate(val_loader, model, epoch) 调用 validate 函数对验证集进行评估，并返回评估...

pytorch部分代码如下：class LDAMLoss(nn.Module): def init(self, cls_num_list, max_m=0.5, weight=None, s=30): super(LDAMLoss, self).init() m_list = 1.0 / np.sqrt(np.sqrt(cls_num_list)) m_list = m_list * (max_m / np.max(m_list)) m_list = torch.cuda.FloatTensor(m_list) self.m_list = m_list assert s > 0 self.s = s if weight is not None: weight = torch.FloatTensor(weight).cuda() self.weight = weight self.cls_num_list = cls_num_list def forward(self, x, target): index = torch.zeros_like(x, dtype=torch.uint8) index_float = index.type(torch.cuda.FloatTensor) batch_m = torch.matmul(self.m_list[None, :], index_float.transpose(0,1)) batch_m = batch_m.view((-1, 1)) # size=(batch_size, 1) (-1,1) x_m = x - batch_m output = torch.where(index, x_m, x) if self.weight is not None: output = output * self.weight[None, :] logit = output * self.s return F.cross_entropy(logit, target, weight=self.weight) train_loader = torch.utils.data.DataLoader(dataset_train, batch_size=BATCH_SIZE, shuffle=True,drop_last=True) test_loader = torch.utils.data.DataLoader(dataset_test, batch_size=BATCH_SIZE, shuffle=True) cls_num_list = np.zeros(classes) for , label in train_loader.dataset: cls_num_list[label] += 1 criterion_train = LDAMLoss(cls_num_list=cls_num_list, max_m=0.5, s=30) criterion_val = LDAMLoss(cls_num_list=cls_num_list, max_m=0.5, s=30) mixup_fn = Mixup( mixup_alpha=0.8, cutmix_alpha=1.0, cutmix_minmax=None, prob=0.1, switch_prob=0.5, mode='batch', label_smoothing=0.1, num_classes=classes) for batch_idx, (data, target) in enumerate(train_loader): data, target = data.to(device, non_blocking=True), Variable(target).to(device,non_blocking=True) # 3、将数据输入mixup_fn生成mixup数据 samples, targets = mixup_fn(data, target) targets = torch.tensor(targets).to(torch.long) # 4、将上一步生成的数据输入model，输出预测结果，再计算loss output = model(samples) # 5、梯度清零（将loss关于weight的导数变成0） optimizer.zero_grad() # 6、若使用混合精度 if use_amp: with torch.cuda.amp.autocast(): # 开启混合精度 loss = torch.nan_to_num(criterion_train(output, targets)) # 计算loss scaler.scale(loss).backward() # 梯度放大 torch.nn.utils.clip_grad_norm(model.parameters(), CLIP_GRAD) # 梯度裁剪，防止梯度爆炸 scaler.step(optimizer) # 更新下一次迭代的scaler scaler.update() # 否则，直接反向传播求梯度 else: loss = criterion_train(output, targets) loss.backward() torch.nn.utils.clip_grad_norm_(model.parameters(), CLIP_GRAD) optimizer.step() 报错：RuntimeError: Expected index [112, 1] to be smaller than self [16, 7] apart from dimension 1

这个报错是因为在计算batch_m时，index_float的维度是反过来的，应该将index_...batch_m = torch.matmul(self.m_list[None, :], index_float.transpose(1,0)) ... 你可以尝试修改后再运行看看是否还会出现报错。

def vali_test(config, model, data_iter, LOSS): t = time.time() model.eval() loss_total = 0 output_all = torch.FloatTensor([]).to(config.device) labels_all = torch.FloatTensor([]).to(config.device) with torch.no_grad(): for texts, labels in data_iter: outputs = model(texts) loss = LOSS(outputs, labels) loss_total += loss labels_all = torch.cat((labels_all, labels), 0) output_all = torch.cat((output_all, outputs), 0) loss = loss_total / len(data_iter) print(' ' * 22 + ' | loss: {:.4f}'.format(loss.item()), end='') output_result = evaluate(output_all, labels_all, config.classify_type) print(' | time: {:.4f}s'.format(get_time_dif(t))) return loss.item(), output_result

函数接受配置文件 config、模型对象 model、数据迭代器 data_iter 和损失函数 LOSS 作为输入。首先，将模型设置为评估模式，通过调用 model.eval() 来实现。接下来，定义一些变量用于记录评估过程的信息...

解读这段代码def val(val_set, max_iter=100, flag=False): print('Start val') data_loader = torch.utils.data.DataLoader( val_set, shuffle=True, batch_size=opt.batchSize, num_workers=int(opt.workers)) val_iter = iter(data_loader) n_correct = 0 loss_avg = utils.averager() if not flag: max_iter = min(max_iter, len(data_loader)) else: max_iter = max(max_iter, len(data_loader)) for i in range(max_iter): # data = val_iter.next() # # data = next(val_iter) # try: # data=next(val_iter) # except StopIteration: # return try: data = val_iter.next() except: val_iter = iter(data_loader) # 再次读取，获取数据 data = val_iter.next() cpu_images, cpu_texts = data batch_size = cpu_images.size(0) utils.loadData(image, cpu_images) t, l = converter.encode(cpu_texts) utils.loadData(text, t) utils.loadData(length, l) with torch.no_grad(): crnn.eval() preds = crnn(image) crnn.train() preds_size = torch.IntTensor([preds.size(0)] * batch_size) cost = criterion(preds, text, preds_size, length) loss_avg.add(cost) _, preds = preds.max(2) preds = preds.transpose(1, 0).contiguous().view(-1) sim_preds = converter.decode(preds.data, preds_size.data, raw=False) for pred, target in zip(sim_preds, cpu_texts): if pred == target: n_correct += 1

它接收一个数据集 val_set，将其封装成一个 DataLoader 对象，并迭代 max_iter 次进行验证。如果 flag 为 False，则 max_iter 不得超过数据集的长度；否则 max_iter 不得小于数据集的长度。在每次迭代...

pytorch代码如下：class LDAMLoss(nn.Module): def init(self, cls_num_list, max_m=0.5, weight=None, s=30): super(LDAMLoss, self).init() m_list = 1.0 / np.sqrt(np.sqrt(cls_num_list)) m_list = m_list * (max_m / np.max(m_list)) m_list = torch.cuda.FloatTensor(m_list) self.m_list = m_list assert s > 0 self.s = s if weight is not None: weight = torch.FloatTensor(weight).cuda() self.weight = weight self.cls_num_list = cls_num_list def forward(self, x, target): index = torch.zeros_like(x, dtype=torch.uint8) index_float = index.type(torch.cuda.FloatTensor) batch_m = torch.matmul(self.m_list[None, :], index_float.transpose(1,0)) # 0,1 batch_m = batch_m.view((-1, 1)) # size=(batch_size, 1) (-1,1) x_m = x - batch_m output = torch.where(index, x_m, x) if self.weight is not None: output = output * self.weight[None, :] logit = output * self.s return F.cross_entropy(logit, target, weight=self.weight) classes=7, cls_num_list = np.zeros(classes) for , label in train_loader.dataset: cls_num_list[label] += 1 criterion_train = LDAMLoss(cls_num_list=cls_num_list, max_m=0.5, s=30) criterion_val = LDAMLoss(cls_num_list=cls_num_list, max_m=0.5, s=30) for batch_idx, (data, target) in enumerate(train_loader): data, target = data.to(device, non_blocking=True), Variable(target).to(device,non_blocking=True) # 3、将数据输入mixup_fn生成mixup数据 samples, targets = mixup_fn(data, target) targets = torch.tensor(targets).to(torch.long) # 4、将上一步生成的数据输入model，输出预测结果，再计算loss output = model(samples) # 5、梯度清零（将loss关于weight的导数变成0） optimizer.zero_grad() # 6、若使用混合精度 if use_amp: with torch.cuda.amp.autocast(): # 开启混合精度 loss = torch.nan_to_num(criterion_train(output, targets)) # 计算loss scaler.scale(loss).backward() # 梯度放大 torch.nn.utils.clip_grad_norm(model.parameters(), CLIP_GRAD) # 梯度裁剪，防止梯度爆炸 scaler.step(optimizer) # 更新下一次迭代的scaler scaler.update() 报错：File "/home/adminis/hpy/ConvNextV2_Demo/models/losses.py", line 53, in forward return F.cross_entropy(logit, target, weight=self.weight) File "/home/adminis/anaconda3/envs/wln/lib/python3.9/site-packages/torch/nn/functional.py", line 2824, in cross_entropy return torch._C._nn.cross_entropy_loss(input, target, weight, _Reduction.get_enum(reduction), ignore_index) RuntimeError: multi-target not supported at /pytorch/aten/src/THCUNN/generic/ClassNLLCriterion.cu:15

可以使用 torch.flatten() 或者 torch.view() 来实现这个转换。修改后的代码如下： python def forward(self, x, target): index = torch.zeros_like(x, dtype=torch.uint8) index_float = index.type...

@torch.no_grad() def val(dataset): # Validation step data_loader = DataLoader(dataset, batch_size=config['batch_size'], shuffle=False, num_workers=config['data_threads'], pin_memory=True )是什么意思

这段代码定义了一个名为val的函数，用于进行验证。函数接受一个名为dataset的参数，表示用于验证的数据集。在函数内部，使用@torch.no_grad()装饰器来标记验证过程，表示在验证过程中不需要计算梯度，以...

if (epoch + 1) % val_interval == 0: model.eval() with torch.no_grad(): y_pred = torch.tensor([], dtype=torch.float32, device=device) y = torch.tensor([], dtype=torch.long, device=device) for val_data in val_loader: val_images, val_labels = ( val_data[0].to(device), val_data[1].to(device), ) y_pred = torch.cat([y_pred, model(val_images)], dim=0) y = torch.cat([y, val_labels], dim=0) y_onehot = [y_trans(i) for i in decollate_batch(y, detach=False)] y_pred_act = [y_pred_trans(i) for i in decollate_batch(y_pred)] auc_metric(y_pred_act, y_onehot) result = auc_metric.aggregate() auc_metric.reset() del y_pred_act, y_onehot metric_values.append(result) acc_value = torch.eq(y_pred.argmax(dim=1), y) acc_metric = acc_value.sum().item() / len(acc_value) if result > best_metric: best_metric = result best_metric_epoch = epoch + 1 torch.save(model.state_dict(), os.path.join(root_dir, "best_metric_model.pth")) print("saved new best metric model") print( f"current epoch: {epoch + 1} current AUC: {result:.4f}" f" current accuracy: {acc_metric:.4f}" f" best AUC: {best_metric:.4f}" f" at epoch: {best_metric_epoch}" )

然后，对于每个val_data，将验证图像(val_images)和标签(val_labels)移动到设备上。接下来，使用模型(model)对验证图像进行预测，并使用torch.cat将每个batch的预测结果和真实标签拼接在一起，以便计算整个验证集...

def finetune(model, dataloaders, optimizer): since = time.time() best_acc = 0 criterion = nn.CrossEntropyLoss() stop = 0 for epoch in range(1, args.n_epoch + 1): stop += 1 # You can uncomment this line for scheduling learning rate # lr_schedule(optimizer, epoch) for phase in ['src', 'val', 'tar']: if phase == 'src': model.train() else: model.eval() total_loss, correct = 0, 0 for inputs, labels in dataloaders[phase]: inputs, labels = inputs.to(DEVICE), labels.to(DEVICE) optimizer.zero_grad() with torch.set_grad_enabled(phase == 'src'): outputs = model(inputs) loss = criterion(outputs, labels) preds = torch.max(outputs, 1)[1] if phase == 'src': loss.backward() optimizer.step() total_loss += loss.item() * inputs.size(0) correct += torch.sum(preds == labels.data) epoch_loss = total_loss / len(dataloaders[phase].dataset) epoch_acc = correct.double() / len(dataloaders[phase].dataset) print('Epoch: [{:02d}/{:02d}]---{}, loss: {:.6f}, acc: {:.4f}'.format(epoch, args.n_epoch, phase, epoch_loss, epoch_acc)) if phase == 'val' and epoch_acc > best_acc: stop = 0 best_acc = epoch_acc torch.save(model.state_dict(), 'model.pkl') if stop >= args.early_stop: break print() model.load_state_dict(torch.load('model.pkl')) acc_test = test(model, dataloaders['tar']) time_pass = time.time() - since print('Training complete in {:.0f}m {:.0f}s'.format(time_pass // 60, time_pass % 60)) return model, acc_test

定义了一个名为finetune的函数，该函数接受三个参数：model、dataload在这段代码中，定义了一个名为finetune的函数，该函数接受三个参数：model、dataloaders在这段代码中，定义了一个名为finetune的函数，该函数...

详细分析一下python代码:import torch.optim as optim criterion = nn.CrossEntropyLoss() optimizer = optim.Adam(net.parameters(), lr=0.01, betas=(0.9, 0.999), eps=1e-08, weight_decay=0, amsgrad=False) scheduler = optim.lr_scheduler.ReduceLROnPlateau(optimizer, mode='min', factor=0.1, patience=10, verbose=True, min_lr=0) loss_hist, acc_hist = [], [] loss_hist_val, acc_hist_val = [], [] for epoch in range(140): running_loss = 0.0 correct = 0 for data in train_loader: batch, labels = data batch, labels = batch.to(device), labels.to(device) optimizer.zero_grad() outputs = net(batch) loss = criterion(outputs, labels) loss.backward() optimizer.step() # compute training statistics _, predicted = torch.max(outputs, 1) correct += (predicted == labels).sum().item() running_loss += loss.item() avg_loss = running_loss / len(train_set) avg_acc = correct / len(train_set) loss_hist.append(avg_loss) acc_hist.append(avg_acc) # validation statistics net.eval() with torch.no_grad(): loss_val = 0.0 correct_val = 0 for data in val_loader: batch, labels = data batch, labels = batch.to(device), labels.to(device) outputs = net(batch) loss = criterion(outputs, labels) _, predicted = torch.max(outputs, 1) correct_val += (predicted == labels).sum().item() loss_val += loss.item() avg_loss_val = loss_val / len(val_set) avg_acc_val = correct_val / len(val_set) loss_hist_val.append(avg_loss_val) acc_hist_val.append(avg_acc_val) net.train() scheduler.step(avg_loss_val) print('[epoch %d] loss: %.5f accuracy: %.4f val loss: %.5f val accuracy: %.4f' % (epoch + 1, avg_loss, avg_acc, avg_loss_val, avg_acc_val))

代码中使用了torch.optim模块中Adam优化器和ReduceLROnPlateau学习率调度器。其中，Adam优化器用于优化网络的参数，而ReduceLROnPlateau调度器用于自动调整学习率以提高训练效果。代码中使用nn.CrossEntropyLoss()...

def test(model, path): model.eval() mean_loss = [] for s in ['val', 'test']: image_root = '{}/{}'.format(path, s) gt_root = '{}/{}'.format(path, s) test_loader = test_dataset(image_root, gt_root) dice_bank = [] iou_bank = [] loss_bank = [] acc_bank = [] for i in range(test_loader.size): image, gt = test_loader.load_data() image = image.cuda() with torch.no_grad(): _, _, res = model(image) loss = structure_loss(res, torch.tensor(gt).unsqueeze(0).unsqueeze(0).cuda()) res = res.sigmoid().data.cpu().numpy().squeeze() gt = 1(gt>0.5) res = 1(res > 0.5) dice = mean_dice_np(gt, res) iou = mean_iou_np(gt, res) acc = np.sum(res == gt) / (res.shape[0]*res.shape[1]) loss_bank.append(loss.item()) dice_bank.append(dice) iou_bank.append(iou) acc_bank.append(acc) print('{} Loss: {:.4f}, Dice: {:.4f}, IoU: {:.4f}, Acc: {:.4f}'. format(s, np.mean(loss_bank), np.mean(dice_bank), np.mean(iou_bank), np.mean(acc_bank))) mean_loss.append(np.mean(loss_bank)) return mean_loss[0] 中文解释每一句

然后，使用test_dataset函数加载测试集的数据。接下来，对于每一个样本，图像和标注被加载并送入模型进行预测。计算预测结果和标注之间的结构损失并将结果转换为numpy数组。计算Dice, IoU和准确率等性能度量，并将其...

def the_loop(net, optimizer, train_loader, val_loader=None, epochs=None, swa_model=None, swa_start=5): if epochs is None: raise Exception("a training duration must be given: set epochs") log_iterval = 1 running_mean = 0. loss = torch.Tensor([0.]).cuda() losses = [] val_losses = [] states = [] i, j = 0, 0 pbar = tqdm(train_loader, desc=f"epoch {i}", postfix={"loss": loss.item(), "step": j}) for i in range(epochs): running_mean = 0. j = 0 pbar.set_description(f"epoch {i}") pbar.refresh() pbar.reset() for j, batch in enumerate(train_loader): # implement training step by # - appending the current states to states # - doing a training_step # - appending the current loss to the losses list # - update the running_mean for logging states.append(net.state_dict()) optimizer.zero_grad() output = net(batch) batch_loss = loss_function(output, batch.target) batch_loss.backward() optimizer.step() losses.append(batch_loss.item()) running_mean = (running_mean * j + batch_loss.item()) / (j + 1) if j % log_iterval == 0 and j != 0: pbar.set_postfix({"loss": running_mean, "step": j}) running_mean = 0. pbar.update() if i > swa_start and swa_model is not None: swa_model.update_parameters(net) if val_loader is not None: val_loss = 0. with torch.no_grad(): for val_batch in val_loader: val_output = net(val_batch) val_loss += loss_function(val_output, val_batch.target).item() val_loss /= len(val_loader) val_losses.append(val_loss) pbar.refresh() if val_loader is not None: return losses, states, val_losses return losses, states net = get_OneFCNet() epochs = 10 optimizer = GD(net.parameters(), 0.002) loss_fn = nn.CrossEntropyLoss() losses, states = the_loop(net, optimizer, gd_data_loader, epochs=epochs) fig = plot_losses(losses) iplot(fig)这是之前的代码怎么修改这段代码的错误？

train_loader = DataLoader(train_data, batch_size=batch_size, shuffle=True, num_workers=2, pin_memory=True) train_loader.to(device) 将类似的代码放在数据加载器的定义之后，确保数据和模型都在同一个...

class BCNN(nn.Module): def init(self): nn.Module.init(self) self.features = torchvision.models.vgg16(pretrained = True).features self.features = nn.Sequential(*list(self.features.children())[:-1]) self.fc = nn.Linear(512 2, 200) for param in self.feature.parameters(): param.requires_grad = True nn.init.kaiming_normal_(self.fc.weight.data) if self.fc.bias is not None: nn.init.constant_(self.fc.bias.data, val = 0) def forward(self, x): N = x.size()[0] assert x.size() == (N, 3, 448, 448) x = self.features(x) assert x.size() == (N, 512, 28, 28) x = x.view(N, 512, 28 2) x = torch.bmm(x, torch.transpose(x, 1, 2)) / (28 2) assert x.size() ==(N, 512, 512) x = x.view(N, 512 2) x = torch.sqrt(x + 1e-5) x = nn.functional.normalize(x) x = self.fc(x) assert x.size() == (N, 200) return x啥意思

这是一个 PyTorch 模型定义，定义了一个叫做 BCNN 的类，继承自 nn.Module。该模型使用了预训练的 VGG16 网络，去除了最后一层全连接层，将其余层保存在 self.features 中。接着定义了一个全连接层 self.fc，输入为 ...

for inputs, labels in dataloaders[phase]: inputs = inputs.to(device) labels = labels.to(device) optimizer.zero_grad() #只有训练阶段计算和更新梯度 with torch.set_grad_enabled(phase == 'train'): if is_inception and phase == 'train': print(1) else:#resnet 执行的是这里 outputs = model(inputs) loss = criterion(outputs, labels) _, preds = torch.max(outputs, 1)

这段代码看起来像是一个模型训练的迭代过程，其中 ...需要注意的是，在这个迭代过程中，如果 phase 的值是 'train'，则执行训练操作，如果是 'val'，则执行验证操作。这个变量的值可能是在代码的其他地方设置的。

with torch.set_grad_enabled(phase == 'train'):

这行代码使用了torch.set_grad_enabled()上下文管理器来控制是否计算梯度。 torch.set_grad_enabled()是一个上下文管理器，通过传入一个布尔值来控制是否启用梯度计算。在上下文管理器的作用域内，可以根据条件...

相关推荐

PyTorch练手项目分享：模型微调 .docx

微调YOLO：定制化对象检测的秘诀

pytorch 模型的train模式与eval模式实例

with torch.no_grad(): for data in valid_loader: val_label, val_input = data val_input = val_input.to(torch.float32) val_input, val_label = val_input.to(device), val_label.to(device) val_pred = model.forward(x=val_input)获取训练所得val_pred 中出现次数最多的值

@torch.no_grad() def val(dataset): # Validation step data_loader = DataLoader(dataset, batch_size=config['batch_size'], shuffle=False, num_workers=config['data_threads'], pin_memory=True )是什么意思

with torch.set_grad_enabled(phase == 'train'):

最新推荐

平尾装配工作平台运输支撑系统设计与应用

管理建模和仿真的文件

MATLAB遗传算法探索：寻找随机性与确定性的平衡艺术

如何在S7-200 SMART PLC中使用MB_Client指令实现Modbus TCP通信？请详细解释从连接建立到数据交换的完整步骤。

MAX-MIN Ant System：用MATLAB解决旅行商问题

"互动学习：行动中的多样性与论文攻读经历"

【实战指南】MATLAB自适应遗传算法调整：优化流程全掌握

在Spring AOP中，如何实现一个环绕通知并在方法执行前后插入自定义逻辑？

Flutter状态管理新秀：sealed_flutter_bloc包整合seal_unions

关系数据表示学习