逐句翻译代码def load_trained_modules(model: torch.nn.Module, args: None): enc_model_path = args.enc_init enc_modules = args.enc_init_mods main_state_dict = model.state_dict() logging.warning("model(s) found for pre-initialization") if os.path.isfile(enc_model_path): logging.info('Checkpoint: loading from checkpoint %s for CPU' % enc_model_path) model_state_dict = torch.load(enc_model_path, map_location='cpu') modules = filter_modules(model_state_dict, enc_modules) partial_state_dict = OrderedDict() for key, value in model_state_dict.items(): if any(key.startswith(m) for m in modules): partial_state_dict[key] = value main_state_dict.update(partial_state_dict) else: logging.warning("model was not found : %s", enc_model_path)

def load_pre_trained_checkpoint(): param_dict = None if cfg['pre_trained']: if os.path.isdir(cfg['ckpt_path']): ckpt_save_dir = cfg['ckpt_path'] ckpt_pattern = os.path.join(ckpt_save_dir, "*.ckpt") ckpt_files = glob.glob(ckpt_pattern) if not ckpt_files: logger.warning(f"There is no ckpt file in {ckpt_save_dir}, " f"pre_trained is unsupported.") else: ckpt_files.sort(key=os.path.getmtime, reverse=True) time_stamp = datetime.datetime.now() print(f"time stamp {time_stamp.strftime('%Y.%m.%d-%H:%M:%S')}" f" pre trained ckpt model {ckpt_files[0]} loading", flush=True) param_dict = ms.load_checkpoint(ckpt_files[0]) elif os.path.isfile(cfg['ckpt_path']): param_dict = ms.load_checkpoint(cfg['ckpt_path']) print('Successfully loaded!') else: print(f"Invalid pre_trained {cfg['ckpt_path']} parameter.") return param_dict

这是一个加载预训练模型的函数。它首先检查配置文件中的预训练参数（pre_trained）是否为True，并且...如果pre_trained为False或者ckpt_path参数无效（既不是目录也不是文件），则会打印相应的错误信息，并返回None。

class EntityRankerClassifier(nn.Module): def init(self, n_classes, PRE_TRAINED_MODEL_NAME): super(EntityRankerClassifier, self).init() self.bert = AutoModel.from_pretrained(PRE_TRAINED_MODEL_NAME) self.drop = nn.Dropout(p=0.3) self.out = nn.Linear(self.bert.config.hidden_size, n_classes) def forward(self, input_ids, attention_mask): _, pooled_output = self.bert( input_ids=input_ids, attention_mask=attention_mask, return_dict=False ) output = self.drop(pooled_output) return self.out(output)

1. 初始化函数：接受两个参数，一个是输出类别数n_classes，一个是预训练模型的名称PRE_TRAINED_MODEL_NAME，通过调用父类初始化函数来初始化模型。 2. 模型结构：该模型使用预训练的BERT模型作为编码器，通过Auto...

import cv2 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 FCN backbone fcn_backbone = models.segmentation.fcn_resnet50(pretrained=True) self.fcn = fcn_backbone.backbone # Create the transformer encoder self.transformer_encoder = nn.TransformerEncoderLayer(d_model=2048, nhead=8) # Output linear layer self.linear = nn.Linear(2048, num_classes) def forward(self, x): # Pass input through FCN backbone fcn_output = self.fcn(x)['out'] print(fcn_output.shape) x = fcn_output # Reshape output tensor for transformer # From (batch_size, channels, height, width) to (width * height, batch_size, channels) fcn_output = fcn_output.permute(0, 2, 3, 1).contiguous().view(-1, fcn_output.size(0), fcn_output.size(1)) print(fcn_output.shape) # Pass the reshaped tensor through transformer encoder transformed_output = self.transformer_encoder(fcn_output) print(transformed_output.shape) # Reshape output tensor back to (batch_size, channels, height, width) transformed_output = transformed_output.view(1, -1) print(transformed_output.shape) output = self.linear(transformed_output) return output if name == 'main': a = torch.randn(1, 3, 512, 512) model = FCNTransformer(num_classes=2) print(model(a).shape) # print(model) 改进这段代码

这段代码已经实现了一个FCNTransformer模型，它基于FCN网络和Transformer编码器。如果你想改进这段代码，可以考虑以下几点： 1. 数据处理：在输入图像之前，对图像进行预处理，例如缩放、裁剪或标准化。可以使用...

img_pairs = [] for ext in args.img_exts: test_files = data_dir.files('*1.{}'.format(ext)) for file in test_files: img_pair = file.parent / (file.stem[:-1] + '2.{}'.format(ext)) if img_pair.isfile(): img_pairs.append([file, img_pair]) print('{} samples found'.format(len(img_pairs))) # create model network_data = torch.load(args.pretrained) print("=> using pre-trained model '{}'".format(args.arch)) model = models.dict[args.arch](network_data).to(device) model.eval() cudnn.benchmark = True

通过 torch.load(args.pretrained) 加载预训练模型的网络数据，并将其保存在 network_data 变量中。然后，代码使用 args.arch 参数来选择合适的模型架构，并传入 network_data 初始化模型。模型被移动到指定...

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

# 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_...

import mindspore.nn as nn import mindspore.ops.operations as P from mindspore import Model from mindspore import Tensor from mindspore import context from mindspore import dataset as ds from mindspore.train.callback import ModelCheckpoint, CheckpointConfig, LossMonitor from mindspore.train.serialization import load_checkpoint, load_param_into_net from mindspore.nn.metrics import Accuracy # Define the ResNet50 model class ResNet50(nn.Cell): def init(self, num_classes=10): super(ResNet50, self).init() self.resnet50 = nn.ResNet50(num_classes=num_classes) def construct(self, x): x = self.resnet50(x) return x # Load the CIFAR-10 dataset data_home = "/path/to/cifar-10/" train_data = ds.Cifar10Dataset(data_home, num_parallel_workers=8, shuffle=True) test_data = ds.Cifar10Dataset(data_home, num_parallel_workers=8, shuffle=False) # Define the hyperparameters learning_rate = 0.1 momentum = 0.9 epoch_size = 200 batch_size = 32 # Define the optimizer optimizer = nn.Momentum(filter(lambda x: x.requires_grad, resnet50.get_parameters()), learning_rate, momentum) # Define the loss function loss_fn = nn.SoftmaxCrossEntropyWithLogits(sparse=True, reduction='mean') # Define the model net = ResNet50() # Define the model checkpoint config_ck = CheckpointConfig(save_checkpoint_steps=1000, keep_checkpoint_max=10) ckpt_cb = ModelCheckpoint(prefix="resnet50", directory="./checkpoints/", config=config_ck) # Define the training dataset train_data = train_data.batch(batch_size, drop_remainder=True) # Define the testing dataset test_data = test_data.batch(batch_size, drop_remainder=True) # Define the model and train it model = Model(net, loss_fn=loss_fn, optimizer=optimizer, metrics={"Accuracy": Accuracy()}) model.train(epoch_size, train_data, callbacks=[ckpt_cb, LossMonitor()], dataset_sink_mode=True) # Load the trained model and test it param_dict = load_checkpoint("./checkpoints/resnet50-200_1000.ckpt") load_param_into_net(net, param_dict) model = Model(net, loss_fn=loss_fn, metrics={"Accuracy": Accuracy()}) result = model.eval(test_data) print("Accuracy: ", result["Accuracy"])这段代码有错误

# Load the trained model and test it param_dict = load_checkpoint("./checkpoints/resnet50-200_1000.ckpt") load_param_into_net(net, param_dict) model = Model(net, loss_fn=loss_fn, metrics={"Accuracy": ...

def extract_features(img): # Load the pre-trained MobileNetV3-Large model model = models.mobilenet_v3_large(weights = models.MobileNet_V3_Large_Weights.IMAGENET1K_V1) model.classifier[-1] = torch.nn.Identity() # Set the model to evaluation mode model.eval() # Define the image transformation pipeline 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]) ]) # Apply the image transformation pipeline img = transform(img) # Add an extra batch dimension to the image img = img.unsqueeze(0) # Pass the image through the model to obtain the features with torch.no_grad(): features = model.features(img) features = model.avgpool(features) features = torch.flatten(features, 1) features = model.classifier(features) # Convert the features to a numpy array features = features.squeeze() # Return the features as a numpy array return features

这是一个Python函数，用于提取一张图片的特征。具体来说，它使用了PyTorch框架中的预训练模型MobileNetV3-Large，在对图片进行必要的预处理后，将其输入到模型中，得到图片的特征向量。函数的输入参数img是一个PIL...

def load_pre_trained(): # load pre-trained embedding model embeddings_index = {} with open('D:\Desktop\深度学习\Embedding\sgns.sogou.word',encoding='utf-8') as f: _, embedding_dim = f.readline().split() for line in f: values = line.split() word = values[0] coefs = np.asarray(values[1:], dtype='float32') embeddings_index[word] = coefs print('Found %s 单词数量, 向量的维度信息 %s' % (len(embeddings_index), embedding_dim)) return embeddings_index

这段代码是用于加载预训练的词向量模型，其中使用的是搜狗新闻词向量数据集sgns.sogou.word。该数据集是一个预训练的中文词向量模型，包含了超过1.8亿个中文词汇及其对应的向量表示。代码中使用的是Python中的字典...

from mindspore.train.callback import ModelCheckpoint, CheckpointConfig, LossMonitor, TimeMonitor class LossCallBack(LossMonitor): """ Monitor the loss in training. If the loss in NAN or INF terminating training. """ def init(self, has_trained_epoch=0, per_print_times=per_print_steps): super(LossCallBack, self).init() self.has_trained_epoch = has_trained_epoch self._per_print_times = per_print_times def step_end(self, run_context): cb_params = run_context.original_args() loss = cb_params.net_outputs if isinstance(loss, (tuple, list)): if isinstance(loss[0], ms.Tensor) and isinstance(loss[0].asnumpy(), np.ndarray): loss = loss[0] if isinstance(loss, ms.Tensor) and isinstance(loss.asnumpy(), np.ndarray): loss = np.mean(loss.asnumpy()) cur_step_in_epoch = (cb_params.cur_step_num - 1) % cb_params.batch_num + 1 if isinstance(loss, float) and (np.isnan(loss) or np.isinf(loss)): raise ValueError("epoch: {} step: {}. Invalid loss, terminating training.".format( cb_params.cur_epoch_num, cur_step_in_epoch)) if self._per_print_times != 0 and cb_params.cur_step_num % self._per_print_times == 0: # pylint: disable=line-too-long print("epoch: %s step: %s, loss is %s" % (cb_params.cur_epoch_num + int(self.has_trained_epoch), cur_step_in_epoch, loss), flush=True) time_cb = TimeMonitor(data_size=step_size) loss_cb = LossCallBack(has_trained_epoch=0) cb = [time_cb, loss_cb] ckpt_save_dir = cfg['output_dir'] device_target = context.get_context('device_target') if cfg['save_checkpoint']: config_ck = CheckpointConfig(save_checkpoint_steps=save_ckpt_numstep_size, keep_checkpoint_max=10) # config_ck = CheckpointConfig(save_checkpoint_steps=5step_size, keep_checkpoint_max=10) ckpt_cb = ModelCheckpoint(prefix="resnet", directory=ckpt_save_dir, config=config_ck) cb += [ckpt_cb]

这段代码定义了一些回调函数，用于在训练过程中监控和保存模型。首先，定义了一个名为LossCallBack的类，继承自LossMonitor回调类。它重写了step_end方法，在每个训练步骤结束时监控损失值。如果损失值为NaN或INF...

def train(dev, data_loader_train, data_loader_test, in_dim, h_dim, n_layers, n_classes, n_epochs, l_rate): model_trained = RNN(in_dim, h_dim, n_layers, n_classes).to(dev) criterion = nn.CrossEntropyLoss().to(dev) optimizer = torch.optim.Adam(model_trained.parameters(), lr=l_rate) rate_list = [] # 损失函数采用交叉熵、优化器采用的是Adam、训练过程中，逐epoch逐step,输出训练得到的损失函数loss情况,同时每个epoch结束，用测试数据进行测试，计算当前模型的分类准确率 # total_step = len(data_loader_train) for epoch in range(n_epochs): for i, (images, labels) in enumerate(data_loader_train): image = images.float().to(dev) image = image.permute(0, 2, 1) labels = labels.long().to(dev) outputs = model_trained(image) loss = criterion(outputs, labels) optimizer.zero_grad() loss.backward() optimizer.step() # if (i + 1) % 5 == 0: # print('Epoch [{}/{}], Step [{}/{}], Loss: {:.4f}' # .format(epoch + 1, num_epochs, i + 1, total_step, loss.item())) rate_correct = test(model_trained, data_loader_test, epoch) # 每迭代一轮，都测试并输出当前模型的识别准确率 rate_list.append(rate_correct) torch.save(model_trained.state_dict(), 'savemodel.dic') return rate_list

这是一个使用PyTorch实现的RNN（循环神经网络）模型的训练函数，其中使用了交叉熵损失函数和Adam优化器进行训练。函数的输入包括设备（GPU或CPU）、训练数据加载器、测试数据加载器、输入维度、隐藏层维度、层数、...

怎么理解这段代码： def load_embedding(filename): geneList = list() vectorList = list() f = open(filename) for line in f: values = line.split() gene = values[0] vector = np.asarray(values[1:], dtype="float32") geneList.append(gene) vectorList.append(vector) f.close() return np.asarray(vectorList), np.asarray(geneList) embeddings_file = "../pre_trained_emb/gene2vec_dim_200_iter_9.txt" wv, vocabulary = load_embedding(embeddings_file) indexes = list(range(len(wv))) random.shuffle(indexes) topN = len(wv) rdWV = wv[indexes][:topN,:] rdVB = vocabulary[indexes][:topN] print("PCA!") pca = PCA(n_components=50) pca.fit(rdWV) pca_rdWV=pca.transform(rdWV) print("PCA done!") print("tsne!") with open("../TSNE_label_gene2vec.txt", 'w') as out: for str in rdVB: out.write(str + "\n") out.close() def TSNEWoker (iter): print(iter+" begin") tsne = TSNE(n_components=2, perplexity=30, n_iter=int(iter), learning_rate=200, n_jobs=32) np.set_printoptions(suppress=True) # save tsne data Y = tsne.fit_transform(pca_rdWV) np.savetxt("../TSNE_data_gene2vec.txt_"+iter+".txt",Y) print(iter+" tsne done!") def mp_handler(): p = Pool(6) p.map(TSNEWoker, ["100","5000","10000","20000","50000","100000"]) #generate tsne of different iteration in parallel if name == 'main': # TSNEWoker("5000") mp_handler()

这段代码主要是用于加载嵌入矩阵数据，进行PCA降维和TSNE可视化操作。下面是代码的解释： 1. load_embedding 函数用于加载文件中的嵌入矩阵数据。它首先创建两个空列表 geneList 和 vectorList，然后打开指定...

def predict_from_naive_bayes_model(model, matrix): """Use a Naive Bayes model to compute predictions for a target matrix. This function should be able to predict on the models that fit_naive_bayes_model outputs. Args: model: A trained model from fit_naive_bayes_model matrix: A numpy array containing word counts Returns: A numpy array containg the predictions from the model """ # * START CODE HERE * log_probabilities = [] for i in range(model.num_classes): log_probabilities.append(np.sum(matrix * model.log_class_priors[i] + model.log_likelihoods[i])) return np.argmax(log_probabilities) # Return the class with the highest probability # * END CODE HERE *代码报错AttributeError: 'dict' object has no attribute 'log_class_priors'请帮我修改

model: A trained model from fit_naive_bayes_model matrix: A numpy array containing word counts Returns: A numpy array containing the predictions from the model """ # *** START CODE HERE *** ...

class LinearMaskedCoupling(nn.Module): """ Coupling Layers """ def init(self, input_size, hidden_size, n_hidden, mask, cond_label_size=None): super().init() # stored in state_dict, but not trained & not returned by nn.parameters(); similar purpose as nn.Parameter objects # this is because tensors won't be saved in state_dict and won't be pushed to the device self.register_buffer('mask', mask) # 0,1,0,1 # scale function # for conditional version, just concat label as the input into the network (conditional way of SRMD) s_net = [nn.Linear(input_size + (cond_label_size if cond_label_size is not None else 0), hidden_size)] for _ in range(n_hidden): s_net += [nn.Tanh(), nn.Linear(hidden_size, hidden_size)] s_net += [nn.Tanh(), nn.Linear(hidden_size, input_size)] self.s_net = nn.Sequential(s_net) # translation function, the same structure self.t_net = copy.deepcopy(self.s_net) # replace Tanh with ReLU's per MAF paper for i in range(len(self.t_net)): if not isinstance(self.t_net[i], nn.Linear): self.t_net[i] = nn.ReLU() def forward(self, x, y=None): # apply mask mx = x self.mask # run through model log_s = self.s_net(mx if y is None else torch.cat([y, mx], dim=1)) t = self.t_net(mx if y is None else torch.cat([y, mx], dim=1)) u = mx + (1 - self.mask) * (x - t) * torch.exp( -log_s) # cf RealNVP eq 8 where u corresponds to x (here we're modeling u) log_abs_det_jacobian = (- (1 - self.mask) * log_s).sum( 1) # log det du/dx; cf RealNVP 8 and 6; note, sum over input_size done at model log_prob return u, log_abs_det_jacobian 帮我解析代码

这段代码定义了一个名为LinearMaskedCoupling的类，该类继承自nn.Module。LinearMaskedCoupling是一种coupling层，用于在流式生成模型中实现可逆转换。下面对代码进行解析：在__init__方法中，有以下几个参数： - ...

解释# properties of DPatch target_class = 1 patch_x, patch_y = 0., 0. patch_w, patch_h = 120., 120. patch_size = int(patch_w-patch_x) patch_dir = os.path.join('trained_patch', str(target_class)) img_w, img_h = 416, 416 if not os.path.exists(patch_dir): os.mkdir(patch_dir) print('--------------- patch saved in ----------------') print(patch_dir)

这段代码是关于 DPatch 的属性设置和目录创建的部分。首先，target_class 被设置为 1，表示目标类别的标签。然后，patch_x 和 patch_y 分别被设置为 0 和 0，表示 patch 的左上角坐标。接下来，patch_w...

给我翻译一下 if trained == 0: train_label, train_data = trainingDataSet() else: pk_file = open('data_set/train_set_label.pk1', 'rb') train_label = pickle.load(pk_file) pk_file.close() train_data = np.load('data_set/train_set_data.npy') testFileList = listdir('testDigits') error_sum = 0 test_number = len(testFileList) result_list = []

如果训练等于零，则训练标签和数据为训练数据集，否则打开' data_set / train_set_label.pk1 '文件，加载训练标签，关闭文件，训练数据为' data_set / train_set_data.npy '. 然后，将'testDigits'文件夹中的文件...

class args(): # training args epochs = 4 #"number of training epochs, default is 2" batch_size = 4 #"batch size for training, default is 4" dataset = "MSCOCO 2014 path" HEIGHT = 256 WIDTH = 256 save_model_dir = "models" #"path to folder where trained model will be saved." save_loss_dir = "models/loss" # "path to folder where trained model will be saved." image_size = 256 #"size of training images, default is 256 X 256" cuda = 1 #"set it to 1 for running on GPU, 0 for CPU" seed = 42 #"random seed for training" ssim_weight = [1,10,100,1000,10000] ssim_path = ['1e0', '1e1', '1e2', '1e3', '1e4'] lr = 1e-4 #"learning rate, default is 0.001" lr_light = 1e-4 # "learning rate, default is 0.001" log_interval = 5 #"number of images after which the training loss is logged, default is 500" resume = None resume_auto_en = None resume_auto_de = None resume_auto_fn = None # for test Final_cat_epoch_9_Wed_Jan__9_04_16_28_2019_1.0_1.0.model model_path_gray = "./models/densefuse_gray.model" model_path_rgb = "./models/densefuse_rgb.model"

这段代码定义了一个名为args的类，其中包含了许多训练和模型参数的设置。下面是一些重要的参数： - epochs: 训练的轮数，默认为4。 - batch_size: 训练时的批大小，默认为4。 - dataset: 数据集的路径，...

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