Integer Linear Programming - Binary (0-1) Variables 1, Fixed Cost
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- Опубликовано: 2 июл 2024
- This video shows how to formulate integer linear programming (ILP) models involving Binary or 0-1 variables.
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@joshemman, thank you for the excellent explanations of these optimization and OR concepts! Your command over the subject is clearly evident.
You're very welcome, Hayford. Thanks for dropping a note. 😊
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Awesome video! Could you make a video about how you used excel to come up with your answer?
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Got a question for you if you remember. 5:26 “solving this model”. I made up to that point, what does he use to plop those 6 numbers out and see that only the 2nd / 3rd machines are used?
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nice content. do you have some case about scheduling with ILP solving?
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Much for this video
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Sir, if there is any chance you could add the way you've solved these problems in excel (in this video), please, do! Your video helped me a lot to understand the concept, however, I did not understand how you did this in excel. I googled another video explaining how to solve the "fix cost" problem in excel and I solved your example. Thank you for the provided answers. But I think your video only wins if you could manage to upgrade it a little bit with the excel solver. Your channel is awesome!!!
Thanks for the feedback. I will work on it when I get back to making videos.
Thank you!
You're welcome!
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What is the name of the next video your are referring to at the end? BTW thank you for your explantation, it is definitely going to help to pass my exam!!
ruclips.net/video/B3biWsBLeCw/видео.html
Plz upload how to solve in solver excel
how can we solve this on LINDO?
sir, can u pls show how u wrote a program in lingo?
My man imma buy you a beer for this.
instruction very good, but lacking how we could create the spreadsheet for Solver. Just knowing the results not very helpful for my situation
Hi, Joshua, Did you happen to create a video about how you used Excel Solver to find the optimal solution for this problem? If so, please provide the link. Thank you!
I finally did, here: ruclips.net/video/1nRKsuUcNd4/видео.html
Your videos are extremely helpful!
I have a question
If I want to put the condition that says y1= 0 or 1 in LINDO , how that can happen ? or just by try until I find the best solution ?
In LINDO, use INT Y1
@@joshemman Thank you
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Is it possible to perform the calculation at 1:56 by hand? If so, how?
Trial and error.
Thank you :D please switch with my teacher xD
👍
I have a question: If i want to minimize for example 2x1 +3x2 +3, since there is no x3 but 3 wil f be (2 3 0)?
Yes. But are you sure the x is not missing due to a typo?
@@joshemman im sure its not missing
Please explain how to find the solution for the second problem (fixed charge problem)for Msc mathematics student.I can't understand the final step please explain sir
See if this helps: ruclips.net/video/1nRKsuUcNd4/видео.html
@@joshemman Thank you sir
Thank you so much for the video.
I had a naive doubt. We have put a condition x1=0.
This means if y1 is 0, x1 must be 0.
But we have not yet put a constraint where if y1=1, then x1>0 ?
How do we put this constraint?
We might get a solution where y1=1, but x1=0.
Any help is appreciated.
Note that the constraint x1≤400y1 is still satisfied if y1=1 and x1=0 (since 0≤400). Therefore, no modification to the constraint is required.
Joshua Emmanuel how he get y1=0,y1=1,y2=1
@@joshemman Thanks for the video. So going off of your explanation above, if x1 = 0 (no quantity is produced from machine 1) then Y1 has to be 0 right but since x1 = 0 and y1 = 1 is allowed by the above constraint will it not violate the rule?
@@HVela You can rent Machine 1 and decide not to produce any unit on it (y1 = 1; x1 = 0)
y1 = 0 implies x1 = 0
x1 = 0 does not imply y1 = 0.