帮我写一个matlab线性度计算程序编写
时间: 2024-10-19 13:04:35 浏览: 29
当然,下面是一个简单的例子,展示如何在MATLAB中编写一个基本的线性回归模型并计算R^2(决定系数)以及调整后的R^2:
```matlab
% 加载示例数据(这里假设有一个名为'data.csv'的数据集)
data = readtable('data.csv'); % 替换为你实际数据文件路径
% 提取特征变量(X)和目标变量(Y)
X = data(:, 1:end-1); % 假设最后一列是目标变量
Y = data(:, end);
% 创建线性回归模型
model = fitlm(X, Y);
% 计算R^2
r_squared = model.Rsquared.Ordinary;
fprintf('R^2 (未经调整): %.4f\n', r_squared)
% 调整R^2(如果需要,你需要安装'fittype'包)
if isToolboxAvailable('Statistics and Machine Learning Toolbox')
adj_r_squared = model.Rsquared.Adjusted;
fprintf('Adjusted R^2: %.4f\n', adj_r_squared);
else
fprintf('调整后的R^2计算需要 Statistics and Machine Learning Toolbox。\n');
end
```
这个程序首先加载数据,然后创建一个线性回归模型,并从模型对象中提取决定系数。如果安装了"Statistics and Machine Learning Toolbox",还会计算调整后的R^2。
阅读全文
相关推荐


















