Shortest Path Problem: Formulation & Solution Using Solver

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A J Meitei

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Thank you for this video and for explaining the concept.

I have two questions which i hope you can answer regardimg this
1) If i want the path to cover all nodes then how to set the constraint

2) Does the concept allow two way direction like if a point is located at dead end and the only way possible is revisiting the prior nodes

Really hop you can guide me on this. Thanks

karamjeetsingh-fz

Really neatly explained. Cheers man, I wish my lecturer could do that…

aplepaple

If the path is a double-way, for example, like b can go c and c can go b in the video, what will be the difference in the constraint?

kitirolai

Why are we using 100 or large numbers where no distance is given ??

yashvichauhan

its very useful for me, Thank you so much

dhiazalfanadifah

Hello.

Thank you for putting up your shortest path solution. I am trying to do something similar-but-more complex, and am having trouble, and I was wondering if you could give me some guidance.

What I want to in Excel with shortest paths is:
1) layout a large m-by-n matrix of nodes, with distances in meters between them. I'll use pseudo-chess-board nomenclature with one axis being A-Z and one axis being numbered 1-n (calling nodes "A1", "C3", "F7", etc)
2) have the ability to request multiple shortest paths from (say) B3->F8, G2->A14, F2->R23, etc
3) partially congest a route based on previous paths. For example, if a route is found it may be tagged as 25% congested between two nodes. Another route may add to this. Eventually the route would be congested, and an alternative shortest path would have to be found.
4) ideally I'd like to make it iteratively optimise, but I realise that may be impossible to do in Excel, so the above congestion may have be sequentially built in

Do you know of any examples where such a thing has been done?

Thank you in advance,

Adam

jafacam

Hlello

What is the name of the program that we program this disktra's and prim 's algorithm on?
And what is the algorithm for each grant?

And thank you✨

رِهامعدنانحنونأبوالهيل

thank you. i used it. have a good day!

raphaelnunes

Hello: Thank you, I used a lot.Hossein Fathi

hfdez

Please feel free to ask any questions.

jiran

why do we need to add the "large" numbers?

michaellee

Do you have a method for solving minimum spanning tree in excel?

magnusiversen

Hi Sir,

May I ask if you own the Linear integer programming formulation of a shortest path problem presented in your YT video, so that I may cite you in my research studies? Hoping for a positive response. Thank you.

mykavillafranca

Can you show us in Python? Thanks for the video

Andybandy

Good work
Plz Can you give us Excel file ?

yassineakkes

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