尝试参考非结构阵列 - 列车svm模型的领域

时间:2013-06-28 17:30:06

标签: matlab libsvm undefined-function

你好stackoverflow世界,

所以我试图通过svm列车模型运行一些数据,我遇到了以下错误:

Undefined function or variable 'bestc'.
Error in train_svm_model_sh (line 28)
cmd = ['-s 0 -t 0 -c', num2str(bestc), '-g', num2str(bestg)];

我的原始剧本是:

bestcv = 0; 
for log2c = -10:10, 
  for log2g = -10:10, 
    cmd = ['-s 0 -t 0 -v 20 -c', num2str(2^log2c), '-g', num2str(2^log2g) '-q']; 
    cv = svmtrain(labels, data, cmd); 
    if (cv > bestcv),
        bestcv = cv; bestc = 2^log2c; bestg = 2^log2g;
        fprintf('%g %g %g (best c = %g, g = %g, rate = %g)\n', log2c, log2g, cv, bestc, bestg, bestcv);
    end
  end
end 
cmd = ['-s 0 -t 0 -c', num2str(bestc), '-g', num2str(bestg)];

运行问题的行是:

cmd = ['-s 0 -t 0 -c', num2str(bestc), '-g', num2str(bestg)];

这是因为我只在if循环中定义了变量bestcbestg吗?我该如何解决这个问题?

1 个答案:

答案 0 :(得分:0)

我猜测cv永远不会超过bestcv。为了帮助调试它,你可以这样做:

bestc = []; bestg = [];

然后检查它们是否为isempty