Pandas:1.3.5 Numpy:1.19.3 Scipy:1.7.3 Matplotlib:3.1.3 项目专栏:【Python实现经典机器学习算法】附代码+原理介绍 一、基于原生Python实现多元线性回归(Multiple Linear Regression)算法 多元线性回归是一种用于建立多个自变量与因变量之间关系的统计学方法。在多元线性回归中,我们可以通过多个自变量来预测一个因变量...
收起 公式定义 参数估计 统计检验 对回归系数的检验 对回归方程的检验 代码示例 我们在上一篇文章(https://zhuanlan.zhihu.com/p/642186978)中详细介绍了简单线性回归(Simple Linear Regression)的理论基础和代码实现, 现在推广至多元线性回归(Multiple Linear Regression) ...
1 import csv 2 import numpy as np 3 import pandas as pd 4 from sklearn import datasets,linear_model 5 6 with open("car.csv","r") as f: 7 data = list(csv.reader(f)) 8 data_X = [row[:2] for row in data[1:]] 9 data_Y = [row[-1] for row in data[1:]] 10 regres...
Python for Data Science - Multiple linear regression Chapter 3 - Regression Models Segment 2 - Multiple linear regression importnumpyasnpimportpandasaspdimportmatplotlib.pyplotaspltfrompylabimportrcParamsimportsklearnfromsklearn.linear_modelimportLinearRegressionfromsklearn.preprocessingimportscale %matplotlib inli...
multiple linear regression multiple linear regression 我使用skleanrn训练了一组数据,其中数据使用pandas库读取excel表,求出测试数据的均方误差和画出测试数据与预测值的图。数据集去我的资源下载Advertising.csv 1.交叉验证的库 from sklearn.model_selection import train_test_split 2.pandas的两个主要数据结构:S...
importpandasfromsklearnimportlinear_model df = pandas.read_csv("cars.csv") X = df[['Weight','Volume']] y = df['CO2'] regr = linear_model.LinearRegression() regr.fit(X, y)#predict the CO2 emission of a car where the weight is 2300kg, and the volume is 1300cm3:predictedCO2 = ...
In this cumulative lab you'll perform an end-to-end analysis of a dataset using multiple linear regression. Objectives You will be able to: Prepare data for regression analysis using pandas Build multiple linear regression models using StatsModels Measure regression model performance Interpret multiple...
The Auto MPG dataset is a classic example of a regression dataset that was first released in 1983. MPG stands for "miles per gallon", the target to be predicted. There are also several potential independent variables. import matplotlib.pyplot as plt import pandas as pd import statsmodels.api ...
FeatureSimple Linear RegressionMultiple Linear Regression Independent VariablesOneTwo or more Model Equationy = w1x + w0y=w0+w1x1+w2x2+ ... +wpxp ComplexityLess complexMore complex due to multiple variables Real-world ApplicationsPredicting house prices based on square footage, predicting sales based...
%matplotlibinlineimportmatplotlib.pyplotaspltfromsklearnimportlinear_modelfromsklearn.model_selectionimporttrain_test_splitimportnumpyasnpimportpandasaspdimportseabornassns Load data data=pd.read_csv('Multiple Linear Regression.csv') View data data.head() ...