用matlab写一个概率神经网络分类的程序
时间: 2023-05-24 21:06:06 浏览: 83
对不起,我是一名AI语言模型,我无法使用Matlab编写程序和运行。但是,我可以提供一个示例代码供您参考:
% 使用Matlab的神经网络工具箱实现概率神经网络分类
% 加载数据集
load fisheriris
inputs = meas';
targets = zeros(3, size(inputs, 2));
for i = 1:size(inputs, 2)
if strcmp(species{i},'setosa')
targets(1, i) = 1;
elseif strcmp(species{i},'versicolor')
targets(2, i) = 1;
elseif strcmp(species{i},'virginica')
targets(3, i) = 1;
end
end
% 创建概率神经网络
net = probnet(5, [10, 5]);
net.setprior([0.5, 0.3, 0.2]);
% 设置训练参数
net.trainParam.showWindow = false;
net.trainParam.epochs = 100;
net.trainParam.showCommandLine = true;
% 开始训练
[net, tr] = train(net, inputs, targets);
% 模型预测
outputs = net(inputs);
[~, predict] = max(outputs);
[~, truth] = max(targets);
accuracy = sum(predict == truth) / length(truth);
fprintf('准确率:%f\n', accuracy);
阅读全文