collect optimal point

[BJMariem]

I'm trying to apply a multi-objective optimization algorithm using PLATEMO to optimize some parameters and I need to collect optimal data. Can someone help me please? Thanks.

[Mathi50]

BJMariem there is a answer for your question in PlatEMO 3.4 manual. I was also trying to get optimal solutions for MOOP finally I got it. Thanks for PlatEMO 3.4 Team. Excellent work.....

[BJMariem]

thank you for your retour,did you mean we can collect optimal solution by specifying the value of "outputFcn" ??  Le lundi 31 janvier 2022, 11:00:00 UTC+1, Chandana @.***> a écrit :

BJMariem there is a answer for your question in PlatEMO 3.4 manual. I was also trying to get optimal solutions for MOOP finally I got it. Thanks for PlatEMO 3.4 Team. Excellent work.....

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[Mathi50]

Dear BJMariem, Please check pageno: 6 in the user manual. I have obtained optimal solutions using the code pro=ZDT1();. I think this is helpful for you. Also we can use 'outputFcn'.

[Mathi50]

You can get the 'result' as a output while running platEMO(........);

On Tue, 1 Feb 2022, 11:50 BJMariem, @.***> wrote:

Dear Mathi50 ; when I run " IGD(result{end},pro.optimum); " I have this error !!! Undefined function or variable 'result'.

any idea please!

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[Mathi50]

Dear BJMariem, Did u find the 'result' ? while executing PlatEMO we have to the save as .mat file. Once we load the .mat file you can 'result','metric'. Using that we can get POS,HV,IGD etc.

[BJMariem]

Dear Mathi50 ; so we need to save all populations! the value of the parameter "save" will be equal to the number of evaluations ??

[Mathi50]

Dear BJMariem, The parameter 'save' denotes the number of saved populations, where the populations are saved to a file if the value is positive and displayed in a figure if the value is zero.

[BJMariem]

Dear Mathi50 unfortunately I can not find the desired result . indeed , the problem to be optimized has 4 objectives. I defined the necessary parameters, then I redefined "CalObj" and "CalCon" and I set the following code to generate pareto front : function R = GetOptimum(obj,N) R = UniformPoint(N,obj.M) ; end

after running platemo (......) I use pro = name_problem what do you think about this procedure ? any ideas ? any suggestions ?

[Mathi50]

Dear BJMariem, I tried the following code to get the pareto front, `platemo('algorithm',@MOEAD,'problem',@ZDT1,'N',200,'M',2,'D',5,'save',30); pro = ZDT1(); '

I don't have any idea about this "CalObj" and "CalCon". Can you tell me where can I find this functions in PlatEMO? Which folder it is. Thank you.

[BJMariem]

Dear Mathi50 CalObj and CalCon are two methods for calculating objective values and constraints violation respectively. In fact, I'm trying to use platemo to optimize a user-defined problem that why I have to define the objective function and constraint.

[Mathi50]

Ok thanks.