Calculating the gradient of a function
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Hello. I want to calculate the gradient of this function at the point xc:
function MSE=mseFunction(alpha,beta,y,yS)
MSE = [alpha beta; y yS];
end
xc = [100; 102];
y = 20;
yS = 50;
how I should proceed. Thanks!
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Marco Morganti
le 5 Jan 2017
Modifié(e) : Marco Morganti
le 6 Jan 2017
Hi Amine,
you could use gradient() along with symbolic variables to find the gradient of your function MSE().
syms parameters;
f = mseFunction(parameters);
g = gradient(f);
at this point you can evaluate g() at the desired point:
g_xc = eval(subs(g,xc));
I hope this helps
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Walter Roberson
le 5 Jan 2017
syms parameters;
f = mseFunction(parameters);
g = gradient(f);
gfun = matlabFunction(g); %rather than eval()
g_xc = gfun(xc);
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