首页import pandas as pd import numpy as np from sklearn import datasets,discriminant_analysis from sklearn.model_selection import train_test_split iris=datasets.load_iris() x_train, x_test, y_train, y_test = train_test_split(iris.data, iris.target,train_size=0.8,stratify=iris.target) y_c = np.unique(iris.target) lda=pd.read_csv('pendigits.csv') lda=discriminant_analysis.LinearDiscriminantAnalysis() lda.fit(x_train,y_train) print('Coefficients:%s, intercept %s'%(lda.coef_,lda.intercept_))#输出权重向量和 b print('Score: %.2f' % lda.score(x_test, y_test))#测试集

import pandas as pd import numpy as np from sklearn import datasets,discriminant_analysis from sklearn.model_selection import train_test_split iris=datasets.load_iris() x_train, x_test, y_train, y_test = train_test_split(iris.data, iris.target,train_size=0.8,stratify=iris.target) y_c = np.unique(iris.target) lda=pd.read_csv('pendigits.csv') lda=discriminant_analysis.LinearDiscriminantAnalysis() lda.fit(x_train,y_train) print('Coefficients:%s, intercept %s'%(lda.coef_,lda.intercept_))#输出权重向量和 b print('Score: %.2f' % lda.score(x_test, y_test))#测试集

时间: 2023-05-22 13:01:46 浏览: 135

python数据分析与可视化 import pandas as pd import numpy as np import m

python数据分析与可视化 python数据分析与可视化 import pandas as pd import numpy as np import matplotlib.pyplot as plt # 创建示例数据 data = pd.DataFrame({ 'A': np.random.randn(1000), 'B': np.random.randn(1000), 'C': np.random.randn(1000), }) # 计算每列的平均值 data_mean = data.mean() # 绘制直方图 data['A'].plot(kind='hist', bins=30, color='lightblue', edgecolor='black') # 设置标题和标签 plt.title('Histogram of A') plt.xlabel('Value') plt.ylabel('Frequency') # 显示图形 plt.show() 这段代码首先导入了必要的Python库，并创建了一个包含随机数的DataFram

null是一个表示空值或缺失值的特殊值，通常用于表示变量或对象没有被赋值或不存在。在编程中，null通常用于判断变量是否有值，或者作为函数的返回值来表示没有返回值。在JavaScript中，null是一个原始值，表示空对象指针。

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