Operations Research 07B: Transportation Simplex Method

[@YongWang]

Hi Guys, please comment and let me know what you think about this Operations Research Open Course. Your feedback is really appreciated. If you enjoy the video, please subscribe and share. All my replies here are only related to the content in my own videos. I am afraid I won't be able to answer other questions. Thanks for your understanding.

[@k.s.1737]

Great video and crystal clear technique. Much better than some of the methods I've seen and much better than my text book. Thank you for making the video. You saved my mind.

[@saraha8524]

for 7:21 how did you get the loop? I don't understand why it is not a standard four-square loop.

[@ismailyavuz]

Very successful videos for my final exam.. Thank you!

[@YongWang]

You are welcome, ismail

[@eyupbulutt]

It was very clear and got it. Good content. Thanks Mr. Wang

[@reenaravellena16]

5:50 can I ask,, why is it from u1v2 go to u2v2 and not go to u1v1?

[@felixmerz00]

How do I choose the three other cells for my loop. Let's say I have two possibilities for forming a loop in my basic feasible solution. What criteria do I use to choose the correct loop? Or does it even matter which loop I choose?

[@98KingQuad]

When you mention the Even and odd cells at around 4:55, did you accidentally mix up odd and even? I am confused

[@98KingQuad]

nevermind, I have realized that you define even or odd based off of numbering the loop cells from 0 to 3 in a clockwise direction

[@YongWang]

thanks for the comment, mitchell

[@AhmedSamy-di4sj]

In 8:05 how did you update Us and Vs? Shouldn’t v1=8 and V4=9 ?

[@dominictan8145]

at 7:28 why do you skip the basic value of 10. Does the positive and negative sign take effect on the loop

[@YongWang]

Dominic, good question. You can try stopping at 10 and see if you can form a loop. (The answer is no.)

[@emrecakirbas4511]

Thanks Sir, for crystal- clear explanation and solving ❤

[@na50r24]

What do you do when the Northwest Corner method yielded only BF solution where c_11, c_21, c_22, c_33, c_34 and c_44 have values? Because then I got stuck after figuring out u_1, u_2, v_1, v_2 using c_11, c_21 and c_33....

[@ravikiranbandakavi3293]

Is there any rule that turning point of the loop should lie on the basic variable?

[@hosseinfaridnasr2778]

The loop should only consist of basic variables

[@max40870]

Thank you, Mr. Wang. I appreciate it.

[@YongWang]

No problem, max

[@chowterry3603]

BTW, do you have any videos show that how to find out the initial tableau before we starting the steps, in this video, at the beginning, you just give a initial tableau directly

[@YongWang]

Yes, it was introduced in this video: kzbin.info/www/bejne/h6uohIWKqLGhi80

[@nurshibumi]

Is this the same method with revised simplex method ?

[@vassilis9635]

Crystal Clear explanation! Thanks a lot sir. P.S Still dont know why books in my country put ''d'' instead of ''u'' , ''s'' instead of ''v'' & ''z'' instead of ''w''

[@ronanmccluskey900]

How do you choose a loop

[@jinjiyanazadi7811]

it was a great tutorial on this complex topic. thank you so much.

[@NoctLightCloud]

At 5:30 shouldn't it be w33 instead of w32? w33 = u3 + v3 - c33 = -2 +12 - 16 = -6. Anyways, THANK YOU for this video! God bless you!! Really!

[@YongWang]

Thanks, NoctLightCloud. You are correct. It is supposed to be w33, not w32.

[@whitenoiseaddict]

Mr wang, at the first table, u3+v1 = 14 you said but 8+4 = 12, is it correct or did i misunderstood the problem ? thank you for video!!

[@weihaozeng6655]

Thank you, Mr. Wang!

[@TheClinchMagazine]

Hey Mr. Wang, I got the answer of how you label a cell even or odd. Thanks.

[@wisdommo-sh847]

God bless you!

[@YongWang]

thanks, wisdom

[@ouyangsicong7607]

感谢王老师！

[@YongWang]

u r welcome, ouyang

[@yumenoritsu]

My prof used this in class, thank you ☺

[@YongWang]

Good to know. Thanks

[@byparech8910]

Thank you so much for the video, you are awesome!

[@YongWang]

Thanks, Jorge. I guess I am awesome.

[@indigoizzy5391]

Thank you sir very clear procedure

[@supershad9855]

what is a loop?

[@YongWang]

It's defined in 07A: kzbin.info/www/bejne/gJW8dWV7rqimZpY

[@chowterry3603]

Thanks a lot, it is really helpful.

[@YongWang]

Glad it helps!

[@rickmorrison1715]

Killed it!

[@mithileshg1135]

Great job bro Finally got it:)

[@YongWang]

Thanks

[@irwinbudianto2947]

i love you yong wang

[@hungrycoder3148]

Thank you!

[@YongWang]

no prob, hungry

[@efef4276]

Thanks sir!

[@gokcenafsin5366]

thank you

[@YongWang]

glad to help, gokcen

[@jacobblack2544]

Nihao

[@ayoublaamim1451]

Thank you

[@YongWang]

hope you like it, ayoub