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RE: [Help-glpk] Modelling Advice Request - Project Tasks
From: |
Yingjie Lan |
Subject: |
RE: [Help-glpk] Modelling Advice Request - Project Tasks |
Date: |
Fri, 22 Jan 2010 00:21:43 -0800 (PST) |
Hi Tawny,
My pleasure, surely enjoyed the problem as well. ;)
Probably should contribute this thing into the example set
that ships with GLPK, and maybe I will also add an exampel
in PyMathProg, once GLPK has it (which means GPL, hehe).
> > Big-M: M = 15 - 1 given 15 tasks.
> param BigM := 100;
Usually too big an M slows down the solver,
it might be good to make it as smaller as you can.
If you really have a huge model, say with
200 tasks, row generation suggested by others
might be a must, my rough guess.
Cheers,
Yingjie
- [Help-glpk] Modelling Advice Request - Project Tasks, Tawny Owl, 2010/01/20
- Re: [Help-glpk] Modelling Advice Request - Project Tasks, Yaron Kretchmer, 2010/01/20
- Re: [Help-glpk] Modelling Advice Request - Project Tasks, Yingjie Lan, 2010/01/20
- Re: [Help-glpk] Modelling Advice Request - Project Tasks, Yaron Kretchmer, 2010/01/20
- RE: [Help-glpk] Modelling Advice Request - Project Tasks, Tawny Owl, 2010/01/21
- Re: [Help-glpk] Modelling Advice Request - Project Tasks, Andrew Makhorin, 2010/01/21
- Message not available
- Re: [Help-glpk] Modelling Advice Request - Project Tasks, Andrew Makhorin, 2010/01/21
- Re: [Help-glpk] Modelling Advice Request - Project Tasks, Jeffrey Kantor, 2010/01/21
- Re: [Help-glpk] Modelling Advice Request - Project Tasks, Andrew Makhorin, 2010/01/22
- RE: [Help-glpk] Modelling Advice Request - Project Tasks,
Yingjie Lan <=
- Re: [Help-glpk] Modelling Advice Request - Project Tasks, Jeffrey Kantor, 2010/01/22
- Re: [Help-glpk] Modelling Advice Request - Project Tasks, Yingjie Lan, 2010/01/22
- Re: [Help-glpk] Modelling Advice Request - Project Tasks, Andrew Makhorin, 2010/01/22
Re: [Help-glpk] Modelling Advice Request - Project Tasks, Andrew Makhorin, 2010/01/20
Re: [Help-glpk] Modelling Advice Request - Project Tasks, Andrew Makhorin, 2010/01/20