how to do the matrix value comparison of two different iterations ?

fun [ …… …. ]= mainfun [………………….]

iteration=1

while iteration<maxiterationno

some parameter and their calculation

[ ]=subfun1 [];

[ ,out2 ]=subfun2[];

Newoutput=out2(1:10,:)

Iteration=iteration+1;

end

maybe from subfun2 I will get one output called out2 ,I want to do the comparison of iteration number i and iteration i+1 ,if iteration i+1 give me better solution like the summation of any specific column value is greater than the ith iteration then my iteration should be stop and it will show me the best solution value .

Answer 1

[Karim]

yes, you can do this like you say by saving the best result and updating it at each iteration

i tried to update the pseudo code to give you the idea

function [] = mainfun()

iteration = 0;
old_out2 = 0;
c = 2; % column to check

while iteration < max_iteration
    
    % increase the counter
    iteration = iteration + 1;
    
    % some parameter and their calculation
    [] = subfun1();
    [, out2] = subfun2();
    
    if iteration == 1
        % at the first iteration save the result
        old_out2 = out2;
    else
        % for all other iterations, check if the new result is bigger
        if sum( old_out2(:,c) ) < sum( out2(:,c) )
            % if so break the loop
            break
        end
    end

end

[Akash Pal]

Thank you so much .It's a great help .Can you tell me how to see the exact iteration number where the loop is breaking ?

[Karim]

this will automatically be stored in the variable 'iteration', this is why i placed the 'break' at the end of the loop.

[Akash Pal]

Thank You I understand .

[Akash Pal]

I have a question ,maybe after certain iteration number i got my expected result but if i want to do another 3 to 5 iteration more and if i get everytime better solution then i want to stop the iteration .Then how to implement inside the code ?