While loop and optimization

Question

Chetan Fadnis 2022-8-26

0
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https://ww2.mathworks.cn/matlabcentral/answers/1787010-while-loop-and-optimization

评论： Chetan Fadnis 2022-8-26

I am trying to optimize certain values using golden search, inside while loop. To initialize I assign a value to a variable (say t=0.1) outside while loop. I calculate the another parameter using golden ratio method inside the while loop, check for the the condition if my objective is less than tolerance the loop breaks, else I have to update the value of (t) by say 0.05. The maximum value for t is 0.35. If I write it like, t=t+0.05; it will go into infinite looping case. How to stop this while loop, once t attains its maximum value?

t=0.1; %for this t calculate initial y1, y2, which are further updated using golden search

while 1

%code for golden search, giving values of y2 and y1.

if (abs(y2-y1)<=tolerance)

break

end

t=t+0.05;

end

I want t must not exceed 0.35 in any case.

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Chunru 2022-8-26

Then you need "while t<0.35" instead of "while 1"

Chetan Fadnis 2022-8-26

thank you.

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Answer 1

Karim 2022-8-26

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在 MATLAB Online 中打开

You can change the condition for the while loop to reflect this, see below for an example

t = 0.1;
t_max = 0.35;
while t <= t_max
   
    %code for golden search, giving values of y2 and y1.
    
    if abs(y2-y1) <= tolerance
        break
    end
    
    t = t + 0.05;
end