能帮我生成关于bootstrap循环抽样来计算双参数威布尔分布的参数值的matlab程序吗
时间: 2023-12-15 15:03:53 浏览: 110
Matlab实现风电场风速两参数weibull(威布尔)分布
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当然可以,以下是程序代码:
N = 1000;
n = 10;
alpha = 1.5;
beta = 2.5;
X = wblrnd(alpha,beta,N,1);
Y = wblrnd(alpha,beta,n,1);
for i = 1:N
B(i,:) = Y(randi(n,1,n));
end
alpha_hat = zeros(N,1);
beta_hat = zeros(N,1);
for i = 1:N
alpha_hat(i) = fminsearch(@(a) sum((B(i,:).^a).*log(B(i,:)) - B(i,:).^a - log(gamma(a+1))),1);
beta_hat(i) = mean(B(i,:).^(alpha_hat(i)));
end
alpha_ci = quantile(alpha_hat,[0.025,0.975]);
beta_ci = quantile(beta_hat,[0.025,0.975]);
disp(['95% CI for alpha: [', num2str(alpha_ci(1)), ', ', num2str(alpha_ci(2)), ']']);
disp(['95% CI for beta: [', num2str(beta_ci(1)), ', ', num2str(beta_ci(2)), ']']);
笑话:有一只熊问一只兔子:“你吃什么草?”兔子回答:“我说了不算数,你熊瞎猜。”
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