可以帮我把以下代码转成python语言吗:%data = randn(1000,16); %label = randi([0,1],1000,1); % data_trainnn_struct=load("data_trainn.mat"); label_trainnn_struct=load("label_trainn.mat"); data_trainnn=data_trainnn_struct.data; label_trainnn=label_trainnn_struct.label; % 数据预处理 data = zscore(data_trainnn); % 标准化数据 label = categorical(label_trainnn); % 标签划分为分类变量类型 % 进行数据集的划分 cv = cvpartition(length(label_trainnn), 'HoldOut', 0.3); idxTrain = training(cv); idxTest = test(cv); trainData = data(idxTrain,:); trainLabel = label(idxTrain); testData = data(idxTest,:); testLabel = label(idxTest); % 训练分类器 mdl = fitcecoc(trainData, trainLabel); % 预测测试集 predLabel = predict(mdl, testData); % 计算准确率 accuracy = sum(predLabel == testLabel)/numel(testLabel); disp(['Accuracy: ', num2str(accuracy)]); newData = data_filtered'; %代入滤波数据 % 对未知的样本进行数据预处理 newData = zscore(newData); % 训练完毕的分类器 predLabel = predict(mdl, newData); predLabels = double(predLabel); anss=0; %划分标准 avg = mean(predLabels); if abs(avg - 0.5) < 1 anss=1; elseif abs(avg) >= 1.5 anss=0; end
时间: 2023-11-22 08:55:12 浏览: 73
python的numpy问题以及答案
以下是转换后的 Python 代码:
```python
import numpy as np
from scipy.io import loadmat
from sklearn.model_selection import train_test_split
from sklearn.preprocessing import StandardScaler
from sklearn.metrics import accuracy_score
from sklearn.svm import SVC
# 加载数据和标签
data = np.random.randn(1000, 16)
label = np.random.randint(2, size=(1000,))
data_trainnn_struct = loadmat('data_trainn.mat')
label_trainnn_struct = loadmat('label_trainn.mat')
data_trainnn = data_trainnn_struct['data']
label_trainnn = label_trainnn_struct['label']
# 数据预处理
scaler = StandardScaler()
data = scaler.fit_transform(data_trainnn)
label = label_trainnn.astype('category')
# 进行数据集的划分
train_data, test_data, train_label, test_label = train_test_split(
data, label, test_size=0.3, random_state=42)
# 训练分类器
clf = SVC(decision_function_shape='ovo')
clf.fit(train_data, train_label)
# 预测测试集
pred_label = clf.predict(test_data)
# 计算准确率
accuracy = accuracy_score(test_label, pred_label)
print('Accuracy:', accuracy)
# 对未知的样本进行数据预处理
new_data = data_filtered.T
# 数据预处理
new_data = scaler.transform(new_data)
# 预测未知样本
pred_label = clf.predict(new_data)
pred_labels = pred_label.astype(int)
# 划分标准
avg = pred_labels.mean()
if abs(avg - 0.5) < 1:
anss = 1
elif abs(avg) >= 1.5:
anss = 0
```
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