我根据系数的合法域值在fminbnd
函数中使用下限和上限,如下所示:
[x,fval,exitflag] = fminbnd(@(x) minimize_me(sill, x(1), x(2), x(3), cov), [x1l x2l x3l], [x1u x2u x3u], opts);
[x1l x2l x3l]
和[x1u x2u x3u]
是表示优化系数的下限和上限的向量。我的问题的范围如下:
0<=x1l<=5
0<=x1u<=5
0<=x2l<=5
0<=x2u<=5
0<=x3l<=180
0<=x3u<=180
奇怪的问题是,即使在我的域中选择某些值,我也会收到如下所示的错误:
??? Error using ==> mtimes
Inner matrix dimensions must agree.
Error in ==> fminbnd at 271
x = xf + si * max( abs(d), tol1 );
例如,如果我选择,我会收到错误:
[x1l x2l x3l], [x1u x2u x3u] = [0 0 0], [5 5 180]
或[x1l x2l x3l], [x1u x2u x3u] = [1 1 0], [5 5 180]
或[x1l x2l x3l], [x1u x2u x3u] = [1 2 0], [5 5 180]
等。
但是,如果我选择[x1l x2l x3l], [x1u x2u x3u] = [5 5 0], [5 5 180]
或[x1l x2l x3l], [x1u x2u x3u] = [3 0 0], [3 5 180]
等,我不会收到错误。
答案 0 :(得分:4)
根据documentation,fminbnd
仅适用于将单个标量作为参数的函数。
在文件交换中查看fminsearchbnd
:
http://www.mathworks.com/matlabcentral/fileexchange/8277-fminsearchbnd