class_labels = { 0: r'I:\18Breakageratecalculation\mask-slic use\maskSLIC-master\result\result6\slic_pellucid\non-broken roofing', 1: r'I:\18Breakageratecalculation\mask-slic use\maskSLIC-master\result\result6\slic_pellucid\broken roofing', 2: r'I:\18Breakageratecalculation\mask-slic use\maskSLIC-master\result\result6\slic_pellucid\courtyard' }# 遍历每个类别 for class_label in class_labels: # 获取该类别对应的文件夹名称 folder_name = class_labels[class_label] folder_path = os.path.join(r'I:\18Breakageratecalculation\mask-slic use\maskSLIC-master\result\result6\slic_pellucid', folder_name) # 初始化非透明像素点数量为 0 total_non_transparent_pixels = 0 # 遍历文件夹中的所有文件 for filename in os.listdir(folder_path): # 获取文件路径 filepath = os.path.join(folder_path, filename) # 判断是否为图像文件 if filepath.lower().endswith(('.png', '.jpg', '.jpeg', '.gif')): # 计算非透明像素点数量 non_transparent_pixels = count_non_transparent_pixels(filepath) # 累加到总数中 total_non_transparent_pixels += non_transparent_pixels # 输出结果 print(f'类别 {class_label} 的非透明像素点总数：{total_non_transparent_pixels}')怎么计算类别为1的像素点/（类别为1+类别为0的像素点）

import cv2 import numpy as np import os # 提取图像的HOG特征 def get_hog_features(image): hog = cv2.HOGDescriptor() hog_features = hog.compute(image) return hog_features # 加载训练数据集 train_data = [r"I:\18Breakageratecalculation\SVM run\detection_cut\whole\train128"] train_labels = [r"I:\18Breakageratecalculation\SVM run\detection_cut\whole\train128\labels.txt"] num_samples = 681 for i in range(num_samples): img = cv2.imread(str(i).zfill(3)+'.jpg') hog_features = get_hog_features(image) hsv_image = cv2.cvtColor(image, cv2.COLOR_BGR2HSV) color_hist = cv2.calcHist([hsv_image], [0, 1], None, [180, 256], [0, 180, 0, 256]) color_features = cv2.normalize(color_hist, color_hist).flatten() train_data.append(hog_features) train_labels.append(labels[i]) # 训练SVM模型 svm = cv2.ml.SVM_create() svm.setType(cv2.ml.SVM_C_SVC) svm.setKernel(cv2.ml.SVM_LINEAR) svm.train(np.array(train_data), cv2.ml.ROW_SAMPLE, np.array(train_labels)) # 对测试图像进行分类 test_image = cv2.imread('I:\18Breakageratecalculation\mask-slic use\maskSLIC-master\result\split\result2\maskslic2_roi.png', 0) test_features = get_hog_features(test_image) result = svm.predict(test_features.reshape(1,-1)) # 显示分割结果 result_image = np.zeros(test_image.shape, np.uint8) for i in range(test_image.shape[0]): for j in range(test_image.shape[1]): if result[i,j] == 1: result_image[i,j] = 255 cv2.imshow('I:\18Breakageratecalculation\mask-slic use\maskSLIC-master\result\split\result2\Result.png', result_image) cv2.waitKey(0) cv2.destroyAllWindows()

test_image = cv2.imread('I:\18Breakageratecalculation\mask-slic use\maskSLIC-master\result\split\result2\maskslic2_roi.png', 0) test_features = get_hog_features(test_image) hsv_test_image = cv2....

# 遍历每个类别 for class_label in class_labels: # 获取该类别对应的文件夹名称 folder_name = class_labels[class_label] folder_path = os.path.join(r'I:\18Breakageratecalculation\mask-slic use\maskSLIC-master\result\result6\slic_pellucid', folder_name) # 初始化非透明像素点数量为 0 total_non_transparent_pixels = 0 # 遍历文件夹中的所有文件 for filename in os.listdir(folder_path): # 获取文件路径 filepath = os.path.join(folder_path, filename) # 判断是否为图像文件 if filepath.lower().endswith(('.png', '.jpg', '.jpeg', '.gif')): # 计算非透明像素点数量 non_transparent_pixels = count_non_transparent_pixels(filepath) # 累加到总数中 total_non_transparent_pixels += non_transparent_pixels # 输出结果 print(f'类别 {class_label} 的非透明像素点总数：{total_non_transparent_pixels}')然后计算类别为1的像素点/（类别为1+类别为0的像素点）

folder_path = os.path.join(r'I:\18Breakageratecalculation\mask-slic use\maskSLIC-master\result\result6\slic_pellucid', folder_name) # 初始化非透明像素点数量为 0 total_non_transparent_pixels = 0 ...

import sys,numpy as np from keras.datasets import mnist (x_train,y_train),(x_test,y_test)=mnist.load_data() images,labels=(x_train[0:1000].reshape(1000,2828)/255,y_train[0:1000]) one_hot_labels=np.zeros((len(labels),10)) for i,l in enumerate(labels): one_hot_labels[i][l]=1 labels=one_hot_labels test_images=x_test.reshape(len(x_test),2828)/255 test_labels=np.zeros((len(y_test),10)) for i,l in enumerate(y_test): test_labels[i][l]=1 np.random.seed(1) def relu(x): return (x>=0)x #此函数将所有负数设为0 def relu2deriv(output): return output>=0 #当input>0时，返回1，否则返回0 alpha,iterations,hidden_size=(0.005,300,100) pixels_per_image,num_labels=(784,10) weights_0_1=0.2np.random.random((pixels_per_image,hidden_size))-0.1 weights_1_2=0.2np.random.random((hidden_size,num_labels))-0.1 for j in range(iterations): error,correct_cnt=(0.0,0) for i in range(len(images)): layer_0=images[i:i+1] layer_1=relu(np.dot(layer_0,weights_0_1)) dropout_mask=np.random.randint(2,size=layer_1.shape) layer_1=dropout_mask*2 layer_2=np.dot(layer_1,weights_1_2) error+=np.sum((labels[i:i+1]-layer_2)**2) correct_cnt+=int(np.argmax(layer_2)==\ np.argmax(labels[i:i+1])) layer_2_delta=(labels[i:i+1]-layer_2) layer_1_delta=layer_2_delta.dot(weights_1_2.T)relu2deriv(layer_1) layer_1_delta+=dropout_mask weights_1_2+=alphalayer_1.T.dot(layer_2_delta) weights_0_1+=alpha*layer_0.T.dot(layer_1_delta) if (j%10==0): test_error=0.0 test_correct_cnt=0 for i in range(len(test_images)): layer_0=test_images[i:i+1] layer_1=relu(np.dot(layer_0,weights_0_1)) layer_2=np.dot(layer_1,weights_1_2) test_error+=np.sum((test_labels[i:i+1]-layer_2)**2) test_correct_cnt+=int(np.argmax(layer_2)==np.argmax(test_labels[i:i+1])) sys.stdout.write("\n"+\ "I:"+str(j)+\ " Test-Error:"+str(test_error/float(len(test_images)))[0:5] +\ " Test-Acc:"+str(test_correct_cnt/float(len(test_images)))+\ " Train-Err:"+str(error/float(len(images)))[0:5]+\ " Train-Acc:"+str(correct_cnt/float(len(images))))帮我看看哪里有问题

这是一段使用Python代码，主要实现了以下操作： 1. 导入了必要的库：sys、numpy和keras中的mnist数据集。 2. 从mnist数据集中加载了训练...6. 定义了一个ReLU函数，其中，当输入大于等于0时，返回该输入，否则返回0。

def collate_fn(features: Dict): batch_input_ids = [torch.LongTensor(feature["input_ids"]) for feature in features] batch_attention_mask = [torch.LongTensor(feature["attention_mask"]) for feature in features] batch_labels = [torch.LongTensor(feature["labels"]) for feature in features] # padding batch_input_ids = pad_sequence(batch_input_ids, batch_first=True, padding_value=0) batch_attention_mask = pad_sequence(batch_attention_mask, batch_first=True, padding_value=0) batch_labels = pad_sequence(batch_labels, batch_first=True, padding_value=-100) return { "input_ids": batch_input_ids, "attention_mask": batch_attention_mask, "labels": batch_labels }这段什么意思

在填充时，batch_first=True 表示批次维度在第一维，padding_value=0 表示填充的值为0（对于 input_ids 和 attention_mask），padding_value=-100 表示填充的值为-100（对于 labels）。最后，函数将填充...

history_path = 'D:/花朵数据集/flower_recognition_history.json' # 定义模型保存路径 model_path = 'D:/花朵数据集/flower_recognition_model.h5' # 载入标签数据 labels = loadmat('D:/花朵数据集/imagelabels.mat')['labels'][0] unique_labels = np.unique(labels) class_names = {i: f'class_{label}' for i, label in enumerate(unique_labels)}

这段代码的作用是定义了模型的保存路径和载入标签数据。其中，history_path 表示模型训练过程中的历史记录保存路径，...接着通过字典 class_names 将每个标签映射为一个类别名称，例如 class_0 表示标签为0的类别。

请在代码中加入准确率：with torch.no_grad(): class_accuary_List=[] true_labels = [] predicted_labels = [] for data in testloader: images, labels = data images = images.view(len(images), 1, 121).float() inputs, labels = images.to(device), labels.to(device) outputs = cnn(inputs) _, predicted = torch.max(outputs, 1) true_labels.append(labels.cpu().numpy()) predicted_labels.append(predicted.cpu().numpy()) true_labels = np.concatenate(true_labels) predicted_labels = np.concatenate(predicted_labels) cm = confusion_matrix(true_labels, predicted_labels, labels=[0, 1, 2, 3, 4]) print(cm) for i in range(cm.shape[0]): acc = cm[i, i] / np.sum(cm[i]) class_accuary_List.append(acc) print("Class", i, "Accuracy:", acc)

cm = confusion_matrix(true_labels, predicted_labels, labels=[0, 1, 2, 3, 4]) print(cm) for i in range(cm.shape[0]): acc = cm[i, i] / np.sum(cm[i]) class_accuracy_list.append(acc) print("Class", ...

# Replacing all the class labels as follows: # neg = 0 # pos = 1 class_labels_test = [] for x in tqdm(y_test.index): if y_test.loc[x] == 'neg': class_labels_test.append(0) else: class_labels_test.append(1) y_test = class_labels_test

具体来说，它遍历了y_test的索引，如果y_test中的标签是“neg”，则将0添加到class_labels_test中，否则将1添加到class_labels_test中。最后将y_test赋值为class_labels_test，即完成了标签替换的操作。

train_l=int(0.75*l) X_train=r[0:train_l,0:b-1] Y_train=r[0:train_l,b-1] X_test=r[train_l:l,0:b-1] Y_test=r[train_l:l,b-1] X_train = normalize(X_train, axis=0, norm='max') X_test = normalize(X_test, axis=0, norm='max') scaler = StandardScaler() scaler.fit(X_train) X_train = scaler.transform(X_train) X_test = scaler.transform(X_test) # In[58]: def mySvm(training, training_labels, testing, testing_labels): #Support Vector Machine start = datetime.datetime.now() clf = svm.SVC() clf.fit(training, training_labels) print ("+++++++++ Finishing training the SVM classifier ++++++++++++") result = clf.predict(testing) print ("SVM accuracy:", accuracy_score(testing_labels, result)) #keep the time finish = datetime.datetime.now() print ((finish-start).seconds)帮我解释一下这段代码

这段代码实现了一个支持向量机分类器的训练和测试过程，并且输出了分类器的准确率和训练时间。首先，代码把数据集分成了训练集和测试集。其中，前75%的数据作为训练集，后25%的数据作为测试集。...

cnn = torch.load('../CNN-LSTM-ATT/model/Densenet+bl+att.pkl') cnn = cnn.to(device) with torch.no_grad(): class_accuary_List=[] true_labels = [] predicted_labels = [] for data in testloader: images, labels = data images = images.view(len(images), 1, 121).float() inputs, labels = images.to(device), labels.to(device) outputs = cnn(inputs) _, predicted = torch.max(outputs, 1) true_labels.append(labels.cpu().numpy()) predicted_labels.append(predicted.cpu().numpy()) true_labels = np.concatenate(true_labels) predicted_labels = np.concatenate(predicted_labels) cm = confusion_matrix(true_labels, predicted_labels, labels=[0, 1, 2, 3, 4]) print(cm)修改代码

cm = confusion_matrix(true_labels, predicted_labels, labels=[0, 1, 2, 3, 4]) print(cm) 主要的修改包括： 1. 将变量 class_accuary_List 改为 class_accuracy_List，拼写错误已被更正。 2. 代码...

bbox_offset = torch.stack(batch_offset) bbox_mask = torch.stack(batch_mask) class_labels = torch.stack(batch_class_labels)如何在这上面更改呢

for i, (offset, mask, label) in enumerate(zip(batch_offset, batch_mask, batch_class_labels)): new_offset_list.append(offset) new_mask_list.append(mask) new_labels_list.append(label) bbox_offset = ...

# Load the dataset dataset = ImageFolder("D:/wjd/2", transform=transform) dataloader = DataLoader(dataset, batch_size=32, shuffle=True) # Extract feature vectors features = [] with torch.no_grad(): for images, _ in dataloader: outputs = model(images) features.append(outputs) features = torch.cat(features, dim=0).numpy() # Perform clustering using GMM gmm = GaussianMixture(n_components=3, covariance_type='full') labels = gmm.fit_predict(features) # Visualize the clustering result plt.scatter(features[:, 0], features[:, 1], c=labels) plt.show() # Save the clustering result save_path = "D:/jk" if not os.path.exists(save_path): os.mkdir(save_path) for i in set(labels): class_path = os.path.join(save_path, str(i)) if not os.path.exists(class_path): os.mkdir(class_path) for j in range(len(labels)): if labels[j] == i: img_path = dataset.imgs[j][0] img_name = os.path.basename(img_path) save_name = os.path.join(class_path, img_name) shutil.copy(img_path, save_name)，能把这段代码改进一下吗，自动确定n_components

for i in set(labels): class_path = os.path.join(save_path, str(i)) if not os.path.exists(class_path): os.mkdir(class_path) for j in range(len(labels)): if labels[j] == i: img_path = dataset.imgs...

# Load the dataset dataset = ImageFolder("D:/wjd/2", transform=transform) dataloader = DataLoader(dataset, batch_size=32, shuffle=True) # Extract feature vectors features = [] with torch.no_grad(): for images, _ in dataloader: outputs = model(images) features.append(outputs) features = torch.cat(features, dim=0) features = features.numpy() # Perform clustering using GMM gmm = GaussianMixture(n_components='auto', covariance_type='full') labels = gmm.fit_predict(features) # Visualize the clustering result plt.scatter(features[:, 0], features[:, 1], c=labels) plt.show() # Save the clustering result save_path = "D:/jk" if not os.path.exists(save_path): os.mkdir(save_path) for i in set(labels): class_path = os.path.join(save_path, str(i)) if not os.path.exists(class_path): os.mkdir(class_path) for j in range(len(labels)): if labels[j] == i: img_path = dataset.imgs[j][0] img_name = os.path.basename(img_path) save_name = os.path.join(class_path, img_name) shutil.copy(img_path, save_name) ，这段代码出现了这个问题raise InvalidParameterError( sklearn.utils._param_validation.InvalidParameterError: The 'n_components' parameter of GaussianMixture must be an int in the range [1, inf). Got 'auto' instead，应该如何改进啊

for i in set(labels): class_path = os.path.join(save_path, str(i)) if not os.path.exists(class_path): os.mkdir(class_path) for j in range(len(labels)): if labels[j] == i: img_path = dataset.imgs...

#创建一个dataset类。 import os import pandas as pd from torchvision.io import read_image from torch.utils.data import Dataset from torch.utils.data import DataLoader import chardet with open(r'C:\Users\WXF\data\cifar10\cifar-10-batches-py\batches.meta', 'rb') as fp: result = chardet.detect(fp.read()) print(result) class CustomImageDataset(Dataset): def init(self, annotations_file, img_dir, transform=None, target_transform=None): #self.img_labels = pd.read_csv(annotations_file, sep=' ', header=None, encoding=result['encoding']) self.img_labels = pd.read_csv(annotations_file, sep=';', header=None, encoding=result['encoding']) self.img_labels[0] = self.img_labels[0].astype(str).str.cat(sep=' ') # 合并第一列为完整文件名 self.img_dir = img_dir self.transform = transform self.target_transform = target_transform def len(self): return len(self.img_labels) def getitem(self, idx): img_path = os.path.join(self.img_dir, self.img_labels.iloc[idx, 0]) image = read_image(img_path) label = self.img_labels.iloc[idx, 1] if self.transform: image = self.transform(image) if self.target_transform: label = self.target_transform(label) return image, label train_dataset = CustomImageDataset(annotations_file=r'C:\Users\WXF\data\cifar10\cifar-10-batches-py\batches.meta', img_dir = r'C:\Users\WXF\data\cifar10\cifar-10-batches-py\data_batch_1',transform=None, target_transform=None) test_dataset = CustomImageDataset(annotations_file=r'C:\Users\WXF\data\cifar10\cifar-10-batches-py\batches.meta', img_dir = r'C:\Users\WXF\data\cifar10\cifar-10-batches-py\test_batch',transform=None, target_transform=None) train_features, train_labels = next(iter(train_dataloader)) print(f"Feature batch shape: {train_features.size()}") print(f"Labels batch shape: {train_labels.size()}") img = train_features[0].squeeze() label = train_labels[0] plt.imshow(img, cmap="gray") plt.show() print(f"Label: {label}")

这段代码创建了一个自定义的图像数据集类 CustomImageDataset，用于读取 CIFAR-10 数据集中的图像数据和标签。该类继承了 PyTorch 中的 Dataset 类，并实现了 __init__、__len__ 和 __getitem__ 方法。...

import wfdb import numpy as np import os import cv2 from PIL import Image import matplotlib.pyplot as plt # 设置数据集路径 data_path = 'mit-bih-arrhythmia-database-1.0.0/' # 设置输出路径 output_path = 'ImageMITBIH/' N_beats_pos = [] A_beats_pos = [] V_beats_pos = [] F_beats_pos = [] L_beats_pos = [] R_beats_pos = [] qita_beats_pos = [] # 读取数据集中所有记录的文件名 records = wfdb.get_record_list('mitdb') print('file list =', records) # 循环遍历每个记录文件 for record in records: print('\n') print('Processing record:', record) # 读取记录文件中的信号和标注信息 all_signals, fields = wfdb.rdsamp(os.path.join(data_path, record)) signals = [x[0] for x in all_signals] annotations = wfdb.rdann(os.path.join(data_path, record), 'atr') print('signals =', signals) print('signals_amount =', len(signals)) print('fields =', fields) print('annotations =', annotations) # 获取每个心拍的位置和类别 beats_pos = annotations.sample beats_labels = annotations.symbol print('beats_pos =', beats_pos) print('pos_amount =', len(beats_pos)) print('beats_labels =', beats_labels) print('labels_amount =', len(beats_labels)) print('labels_forms =', list(set(beats_labels))) for i in range(len(beats_labels)): if beats_labels[i] == 'N': # 正常心拍 N_beats_pos.append(beats_pos[i]) if beats_labels[i] == 'A': # 房性早搏 A_beats_pos.append(beats_pos[i]) if beats_labels[i] == 'V': # 室性早搏 V_beats_pos.append(beats_pos[i]) if beats_labels[i] == 'F': # 室性融合波 F_beats_pos.append(beats_pos[i]) if beats_labels[i] == 'L': # 左束传导受阻 L_beats_pos.append(beats_pos[i]) if beats_labels[i] == 'R': # 右束传导受阻 R_beats_pos.append(beats_pos[i]) else: # 其他异常心拍或无效信号 qita_beats_pos.append(beats_pos[i])逐句翻译一下

这是一个 Python 代码...- 获取每个心拍的位置和类别，分别存储在 beats_pos 和 beats_labels 列表中。 - 根据心拍类别将心拍位置存储在对应的列表中。 - 最后将不同类别的心拍位置列表保存到输出路径下的相应文件中。

def forward(self, input_data, attention_mask=None, labels=None, position_ids=None, inputs_embeds=None, head_mask=None): outputs = self.bert(input_data, attention_mask=attention_mask, position_ids=position_ids, head_mask=head_mask, inputs_embeds=inputs_embeds) sequence_output = outputs[0] # 去除cls,(batch,seq) sequence_output = sequence_output[:, 1:] sequence_output = self.dropout(sequence_output) # 得到判别值 logits = self.classifier(sequence_output) outputs = (logits,) if labels is not None: loss_mask = labels.gt(-1) loss = self.crf(logits, labels, loss_mask) * (-1) outputs = (loss,) + outputs # contain: (loss), scores return outputs

这是BertNER模型的前向传播函数，输入参数包括input_data，attention_mask，labels，position_ids，inputs_embeds，head_mask。其中，input_data是输入的文本数据，attention_mask是掩码，用于指示哪些词是padding，...

function untitled() load('D:\mat格式的MNIST数据\test_labels.mat') load('D:\mat格式的MNIST数据\train_images.mat') load('D:\mat格式的MNIST数据\train_labels.mat') load('D:\mat格式的MNIST数据\test_images.mat') train_num = 600; test_num = 200; %训练数据,图像转向量 data_train = mat2vector(train_images(:,:,1:train_num),train_num); data_test = mat2vector(test_images(:,:,1:test_num),test_num); % 处理训练数据,防止后验概率为0 [data_train,position] = fun(data_train,train_labels1(1:train_num)'); % 处理测试数据 for rows = 1:10 data_test(:,position{1,rows})=[]; end %模型部分 Mdl = fitcnb(data_train,train_labels1(1:train_num)); %测试结果 result = predict(Mdl,data_test); result = result.'; xlabel=[0,1,2,3,4,5,6,7,8,9]; resultbar = [0,0,0,0,0,0,0,0,0,0]; testbar = [0,0,0,0,0,0,0,0,0,0]; for i = 1:test_num temp1=result(i); temp1=temp1+1; resultbar(temp1)=resultbar(temp1)+1; temp2=test_labels1(i); temp2=temp2+1; testbar(temp2)=testbar(temp2)+1; end bar(xlabel, [resultbar' testbar']); % 整体正确率 acc = 0.; for i = 1:test_num if result(i)==test_labels1(i) acc = acc+1; end end title('精确度为：',(acc/test_num)100) end function [output,position] = fun(data,label) position = cell(1,10); %创建cell存储每类中删除的列标 for i = 0:9 temp = []; pos = []; for rows = 1:size(data,1) if label(rows)==i temp = [temp;data(rows,:)]; end end for cols = 1:size(temp,2) var_data = var(temp(:,cols)); if var_data==0 pos = [pos,cols]; end end position{i+1} = pos; data(:,pos)=[]; end output = data; end function [data_]= mat2vector(data,num) [row,col,~] = size(data); data_ = zeros(num,rowcol); for page = 1:num for rows = 1:row for cols = 1:col data_(page,((rows-1)*col+cols)) = im2double(data(rows,cols,page)); end end end end

这是一段 MATLAB 代码，针对 MNIST 手写数字数据集进行朴素贝叶斯分类器的训练和测试。具体来说，这段代码将 MNIST ...其中，fun 函数用于处理训练数据，防止后验概率为 0；mat2vector 函数用于将图像矩阵转换为向量。

class_labels = { 0: r'I:\18Breakageratecalculation\mask-slic use\maskSLIC-master\result\result6\slic_pellucid\non-broken roofing', 1: r'I:\18Breakageratecalculation\mask-slic use\maskSLIC-master\result\result6\slic_pellucid\broken roofing', 2: r'I:\18Breakageratecalculation\mask-slic use\maskSLIC-master\result\result6\slic_pellucid\courtyard' }计算类被为1的像素点/（类别为+类别为的像素点）

class_1_pixels = np.sum(img == 1) # 类别为1或类别为2的像素点数 total_pixels = np.sum(np.isin(img, [1, 2])) # 计算比例 ratio = class_1_pixels / total_pixels print('类别1像素点占比：', ratio) ...

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# Replacing all the class labels as follows: # neg = 0 # pos = 1 class_labels_test = [] for x in tqdm(y_test.index): if y_test.loc[x] == 'neg': class_labels_test.append(0) else: class_labels_test.append(1) y_test = class_labels_test

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