Hi gams world,
I have a problem in formulating a model:
HSP(i,s) are variables in my model, and I want to put the minimum HSP(i,s) into my objective equation: A =e= B + MINHSP, assuming that MINHSP is the minimun of HSP(i,s). The model is for maximizing “A”. But sincew since HSP(i,s) are variables, I don’t know how to find the minimum one.
What should I do?
Thanks
–
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Hi Dylan
You can add a set of constraints
Defminhsp(i,s) … MINHSP =L= HSP(i,s);
Since you are maximizing A your solver will select the largest possible value of MINHSP, which will be equal to the smallest HSP.
Good luck
Arne
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Arne Stolbjerg Drud
ARKI Consulting & Development A/S
Bagsvaerdvej 246A, DK-2880 Bagsvaerd, Denmark
Phone: (+45) 44 49 03 23, Fax: (+45) 44 49 03 33, email: adrud@arki.dk
From: gamsworld@googlegroups.com [mailto:gamsworld@googlegroups.com] On Behalf Of Dylan Lan
Sent: Tuesday, March 05, 2013 4:21 AM
To: gamsworld@googlegroups.com
Subject: Find the minimum variable
Hi gams world,
I have a problem in formulating a model:
HSP(i,s) are variables in my model, and I want to put the minimum HSP(i,s) into my objective equation: A =e= B + MINHSP, assuming that MINHSP is the minimun of HSP(i,s). The model is for maximizing “A”. But sincew since HSP(i,s) are variables, I don’t know how to find the minimum one.
What should I do?
Thanks
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Reply-to: gamsworld@googlegroups.com
Thanks alot Arne.
Dylan
在 2013å¹´3月5日星期二UTC+8下åˆ4æ—¶10分52秒，Arne Stolbjerg Drud写é“：
Hi Dylan
You can add a set of constraints
Defminhsp(i,s) … MINHSP =L= HSP(i,s);
Since you are maximizing A your solver will select the largest possible value of MINHSP, which will be equal to the smallest HSP.
Good luck
Arne
\
Arne Stolbjerg Drud
ARKI Consulting & Development A/S
Bagsvaerdvej 246A, DK-2880 Bagsvaerd, Denmark
Phone: (+45) 44 49 03 23, Fax: (+45) 44 49 03 33, email: ad…@arki.dk
From: gams...@googlegroups.com [mailto:gams...@googlegroups.com] On Behalf Of Dylan Lan
Sent: Tuesday, March 05, 2013 4:21 AM
To: gams...@googlegroups.com
Subject: Find the minimum variable
Hi gams world,
I have a problem in formulating a model:
HSP(i,s) are variables in my model, and I want to put the minimum HSP(i,s) into my objective equation: A =e= B + MINHSP, assuming that MINHSP is the minimun of HSP(i,s). The model is for maximizing “A”. But sincew since HSP(i,s) are variables, I don’t know how to find the minimum one.
What should I do?
Thanks
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