Particle Swarm Optimization (PSO) for Constrained Optimization Problems

[@vivekpetrolhead]

Great work!! Thanks for including the code. Really helpful.

[@SolvingOptimizationProblems]

Glad it helped! Thank you for watching.

[@yanviegas8614]

awesome work and presentation, sir! thanks for that! please, make a video about the ant colony algorithm in python either!

[@SolvingOptimizationProblems]

Great suggestion! Sure, I will. Thanks for watching.

[@davijame6780]

Great PSO code in python. Do you have this kind of code in matlab? Thanks

[@SolvingOptimizationProblems]

Yes, I have that kind of codes on my channel. Thanks for your interest!

[@poncho135poncho]

Thank you for this video, I really like it. Do you know how to work with discrete variables in PSO?

[@SolvingOptimizationProblems]

For discrete optimization, we need to modify the PSO code - the easiest way is to round up the continuous variables, check and repair.

[@TheJoedoido]

Thank you for the explanation! Could you make the code available in Python? Because there is no link in the description.

[@SolvingOptimizationProblems]

Thanks for watching. The python code will be available very soon.

[@SolvingOptimizationProblems]

Hello, now it is available for downloading. Thanks for your interest.

[@alielectricalelectronicsan2092]

@@SolvingOptimizationProblems Respected sir. I am having the same problem which is consist on both linear and nonlinear constrains The example is also available in the google and its code is also availabe. I work 2 ,or 3 days on it .i implementing the code in matlab but the code is start but pause option is stuk for long time . This is some same like your question values as in you video. I can mail to you this prolem .in to your email addres . Sir the only two persons are in youtube who are properly help the students the first one is you.and the second one is Ap -moniter .com How provide the reply fastly .So Can you provide me some help related my this problem which is having with like your problem. I hope you must help us . Thanks again .may you live long , And god pless you , for your a lot of Knowledge that you spread in the people .with having good skills in optimization problems. Kindly provide some help. Thanks 😊.

[@SolvingOptimizationProblems]

Hello Hassan, I suggest you to remove the constraints to simplify the problem and make sure it running properly. And then add one constraint at a time to build up the algorithm. The easiest way to handle the constraints is to use penalty function. I hope this can help.

[@NasirUddin-im2zb]

thank you very much sir

[@SolvingOptimizationProblems]

Most welcome!

[@王楷惟-v7h]

thank you very much!

[@SolvingOptimizationProblems]

You're welcome!

[@jeffreyeiyike2358]

Good day, please do you have the matlab or python code for ant colony with inequality constraints and bounds just like the PSO example

[@SolvingOptimizationProblems]

Hello, currently No. Many thanks for your great suggestions!

[@jeffreyeiyike2358]

@@SolvingOptimizationProblems what about the matlab code for the PSO. I am struggling with the constraint part

[@donghoonkim4798]

Thank you for AMAZING explanations! Your channel is super helpful to me. Huge thanks to you!

[@SolvingOptimizationProblems]

Happy to hear that!

[@rabindraneupane7901]

Thank you for this amazing content. I was wondering if you would be able to make a video for solving a multi-objective constrained optimization problem using particle swarm optimization in python.

[@SolvingOptimizationProblems]

Great suggestion! I will try.

[@Moneniux]

Hi, great video. It would be nice if you made a video of genetic algorithms and tabu search in matlab. Thanks in advance for your contributions.

[@SolvingOptimizationProblems]

Many thanks for your suggestion for the next videos. I really appreciate that.

[@nurulnadiah2580]

Hi Dr. Thank for this valueable video. It would be nice if you made a video of MOSPO using Python?

[@SolvingOptimizationProblems]

Great suggestion! I will try it as soon as possible. Thank you!

[@nurulnadiah2580]

@@SolvingOptimizationProblems Thank you Dr. Hope to see from you soon since nowadays multi-objective optimization also a hard and challenging problems in industry and academician part. Thank you so much for every effort to share your knowledge here.

[@SolvingOptimizationProblems]

Yes, totally agree with you that multi-objective optimization is very interesting research topic.

[@Tr0rn3]

As a novice in Optimization I would like to thank you for your video which greatly helps me in my research. Can you help me on one last point? If I don't want to find the minimum of my function which is 0.7 but I want to converge to 1 and then stop. What should I change in the code?

[@SolvingOptimizationProblems]

In that case, in each iteration, check the best fitness value - if it is close to 1, use "break" function to jump out of the loop to stop PSO.

[@Tr0rn3]

@@SolvingOptimizationProblems Thank you for your solution, but my program stops for values between 0.9 and 1. What is the impact of the parameters w, c1 and c2 on my convergence speed?

[@SolvingOptimizationProblems]

It's up to you to set the condition to stop. The principle is the same. For the impact of w, c1 and c2, it is hard to say in general. Just run the PSO with different parameters and see

[@Tr0rn3]

@@SolvingOptimizationProblems Thank you for your help. Since last week I have made good progress on my project but I am facing a new difficulty. I have added to your code an ML classification model to privilege certain directions (6D) contrary to others. For this I integrate my classification program when I initialize my point to make sure it's good. Then I also integrate it in the update velocity loop to make sure that the new position value is correct. When I launch my code sometimes everything goes well and other times I get stuck in a loop to choose the right update velocity value. Is there a way when you are stuck in the loop to delete the point and go to another one? Or is there another type of optimization program that would be more suitable to handle a 6D opti + a classification?

[@SolvingOptimizationProblems]

For this, I suggest to use my multi-start genetic algorithm.

[@yogesh6553]

Sir , i tried to solve two nonlinear constraints with the code. But Not getting the approximate result as the published ones. Result variance is large. Please help me out.

[@SolvingOptimizationProblems]

To solve different problems, we need to customize the PSO parameters and penalty cost to maximize its performance.

[@houriatlm2425]

Hi, great video. , thank you for your contributions. It would be nice if you made a video of MOSPO. I need it

[@SolvingOptimizationProblems]

Noted. Thanks for your suggestion. Will try

[@pratyushanand7429]

Levenberg-Marquardt algorithm with nonlinear objective function on Matlab...please show

[@SolvingOptimizationProblems]

Many thanks for your suggestions. Will try as soon as possible.

[@AbdenourMENAA]

thank u

[@SolvingOptimizationProblems]

You're welcome! Good luck .

[@AbdenourMENAA]

@@SolvingOptimizationProblems hello, i need a example how i introduce a constraint optimisation problèlem in a pso or aco method .

[@SolvingOptimizationProblems]

Noted. Thanks for your suggestions!

[@aminamani8867]

so tnx sir for your great and really amazing clips. will be great if you solve some multi-objective problems in python with NSGA or other algorithms too and some examples with more complex and different types of constrains to we can learn how they(different math symbols and constraints type) should be implement in python and some examples of cross dock and scheduling problems. again tnx.

[@SolvingOptimizationProblems]

Many thanks for your great suggestion. Really appreciate that! I will try my best!

[@ADA_asukadigital_academy]

thanks a lot very nice video ,can you possible make video constrained optimization using PSO in MATLAB

[@SolvingOptimizationProblems]

Many thanks for the good suggestion!

[@madhumohan9233]

thank u sir explaining PSO code. sir i got one error in this code i can not able to rectify this error .please help me . i got error like 'NoneType' object has no attribute 'plot'.

[@SolvingOptimizationProblems]

Did you import all libraries? If yes, maybe that happens because you don't use Pycharm.

[@zedzad3279]

Thank you a lot Sir, please can you solve the optimization constraints (both linear and non linear ) problem with Matlab language and use the Hybrid fmincon function inside the PSO . please

[@SolvingOptimizationProblems]

Interesting question! Yes, it is possible.

[@zedzad3279]

@@SolvingOptimizationProblems Thank you sir , please I hope that with more than 6 variables in the objective function. s.t. non-linear constraints and linear too , with fmincon function using Matlab code

[@SolvingOptimizationProblems]

Yes, it can be solved by fmincon solver. I already have some videos on how to use fmincon solver. Hope these videos can help. Good luck!

[@aminamani8867]

very tnx about making these videos. if we had a binary variable how we could define it in pso code in python?

[@SolvingOptimizationProblems]

I never test it with binary variables. Maybe, PSO does not work well with binary variables, compared to other algorithms. I'm not sure. Maybe I'm wrong.

[@aminamani8867]

@@SolvingOptimizationProblems my question is how we implement different type of constraint in python for example equations with sum on variables with multiple indexes or binary variables and other complex constraints its great if you teach us these things too.tnx

[@준-m4t]

@@aminamani8867 It's almost the same problem as me now.. I want to solve it..

[@SolvingOptimizationProblems]

To handle the constraints, we can use penalty functions, check-and-repair method, and others

[@ashikhasan9082]

The link of the python code is not working. Please provide the code to me

[@SolvingOptimizationProblems]

Thanks, I have checked it and it is still working ...

[@kaziahad8960]

I want to solve a problem where my input is a (24,1) matrix.Can i solve this with this code?How can i define bound then?

[@SolvingOptimizationProblems]

Hi, yes, you can use this PSO code with some modification. Bonds depend on the problem. If you don't have bounds, just set them very large. for example: from -99999999 to 99999999

[@kaziahad8960]

@@SolvingOptimizationProblems I have bounds but i don't understand that should i specify bound for every point of the matrix.

[@SolvingOptimizationProblems]

Bound represents the max and min values of each variable.

[@kaziahad8960]

@@SolvingOptimizationProblems Thanks for your reply. It's really helpful for people like me who are new to this area.

[@SolvingOptimizationProblems]

Thanks for watching! Good luck with your study and research.

[@IrfanKhan-oh7kb]

Is MATLAB code for PSO available ?

[@SolvingOptimizationProblems]

Yes, check my blog in the description

[@cboniefbr]

I would like to so ant colony optimization in python

[@SolvingOptimizationProblems]

Many thanks for the suggestion. I will try it as soon as possible

[@pandamusic6055]

Who came here JUST to listen the music? I love first song the most.

[@SolvingOptimizationProblems]

I love that music too! Thank you

[@dmm6730]

It'a great explanations of PSO. Can you help to format Objective function have sent to you.

[@SolvingOptimizationProblems]

I will try it as soon as possible.

[@준-m4t]

The video is so helpful. Thank you. I have one question. Can you find the optimal point that satisfies the constraint when there are multiple variables and multiple equations at the same time, not an equation with two variables? For example, when the variable is from x1 to x10, y1 = 0.1(x1) + ... +3(x10) y2 = 0.5(x1)+ ... +15.5(x10) y3 = 1.3(x1)+ ... + 2.9(x10) Assuming that there is a relation like this (the coefficient in front of the variable is arbitrary) When y1 wants to maximize, y2 wants to minimize and y3 wants to maximize, I don't know how to define the previous variable. The whole equation is summarized by me. But in that code, I put the equation in the fitness part. There is a problem in the part you are trying to replace. Do you understand?

[@SolvingOptimizationProblems]

Yes, it is possible to solve that multi objective optimization problem but we have to modify the PSO code.

[@nvertitizian3626]

It's really a great video, it looks like it will help me a lot in my research, can I get your email to ask you some questions and benefit from your experience?

[@SolvingOptimizationProblems]

Thanks for watching!

[@StayStudywithMonikaSharma]

god afternoon sir,this program is showing error-list out of range

[@SolvingOptimizationProblems]

I think there was some mistakes in your program. Check the program carefully