tranvutuan2001 / ORpraktikum

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Too many variables #15

Closed lakhoune closed 2 years ago

lakhoune commented 2 years ago

There are too many variables in our model. For our current data sets, we have 18492788160 x-variables. This is too much for Gurobi and results in a gurobipy.GurobiError: Out of memory error.

We need to change our model to reduce the number of variables

lakhoune commented 2 years ago

Jörn proposed a regional approach limited to certain Zip Codes for our district set I guess

tranvutuan2001 commented 2 years ago

@lakhoune We can pick a set of districts (by names) that we would like to work on. No need to touch the zip code.

tranvutuan2001 commented 2 years ago

@z-008 @XiaotongMeng @lakhoune Do we need another meeting concerning this problem?

z-008 commented 2 years ago

Yes I agree with @tranvutuan2001 lets not make it complex with zipcode. Lets have a meeting tomorrow in the evening? @tranvutuan2001 @lakhoune @XiaotongMeng

lakhoune commented 2 years ago

I don't think we need to have a seperate meeting for it. We could also just take the n-first entries of the district set

z-008 commented 2 years ago

Well the meeting is not really just for that , Its more for where are we right now with out implementation, do we need to do anything else, when do you suggest we have a meeting ? @lakhoune @tranvutuan2001 @XiaotongMeng

or if at all we don't need it... Its ok

lakhoune commented 2 years ago

I have time the whole day, but would prefer not in the evening

XiaotongMeng commented 2 years ago

I am quite flexible with the meeting time

tranvutuan2001 commented 2 years ago

i'm also flexible

z-008 commented 2 years ago

I am only available after 6 pm so if you guys wanna go on have a meeting before that, you can. I ll take updates from @tranvutuan2001

lakhoune commented 2 years ago

we can also do it at 6 thats fine

z-008 commented 2 years ago

I think I can't make it today, still in office .You guys continue without me

lakhoune commented 2 years ago

@haysgart actually found something we could use: tuplelists