optimization for nonlinear equation using fminunc
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i have an equation 
. i have to do optimization for this to get unknown parameters z a and b. 
, 
and 
are matrixes of size 364x441.after getting z a and b i have to put those values in above equation to get estimated LHS. how to do this using fminunc funtion in matlab
. i have to do optimization for this to get unknown parameters z a and b. , and are matrixes of size 364x441.after getting z a and b i have to put those values in above equation to get estimated LHS. how to do this using fminunc funtion in matlab採用された回答
x0 = [1 1 1];
fun = @(x) x(1)*dsdt + x(2)*s.^x(3);
f = @(x) sum(sum((fun(x) - p).^2));
x = fminsearch(f,x0)
lhs = fun(x)
5 件のコメント
FATHIMA JAMSHEENA P
2023 年 7 月 10 日
FATHIMA JAMSHEENA P
2023 年 7 月 10 日
Torsten
2023 年 7 月 10 日
"f" is the objective function.
You have to supply dsdt, s and p.
FATHIMA JAMSHEENA P
2023 年 7 月 10 日
移動済み: Torsten
2023 年 7 月 10 日
s = load("s.mat");
s = s.s;
s = s(:);
size(s)
idx = s > 0;
s = s(idx);
size(s)
dsdt = load("dsdt.mat");
dsdt = dsdt.dsdt;
dsdt = dsdt(:);
dsdt = dsdt(idx);
p = load("p.mat");
p = p.p;
p = p(:);
p = p(idx);
x0 = [1 1 1];
fun = @(x) x(1)*dsdt + x(2)*s.^x(3);
f = @(x) sum((fun(x) - p).^2);
x = fminsearch(f,x0,optimset('MaxFunEvals',10000,'MaxIter',10000,'Display','iter'))
f(x)
lhs = fun(x)
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