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Hello again, is there any good websites/online forums where people discuss AMPL modeling? appreciate your suggestions... Meanwhile, I'd like to know in AMPL, How do you define the above in AMPL? Thanks in advance |
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AMPL questions should be asked in their discussion forum : But the outcome might be the same as asking here, since a certain fast typing Paul Rubin is answering lots of questions both here and on their forum (in fact any optimization forum :-)) |
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I follow OR Exchange though as yet I don't have enough (%#)(#@$(^@% reputation points to use it all that effectively. Regarding the AMPL Google group, as of right now it shows 6 posts in the past 24 hours. @4er: Afaik, with 41 karma points you can vote on questions and answers (up-votes only, though) and are able to edit community wikis/questions (was 100pts - but has been lowered to 30pts by @Michael Trick [btw, someone with 'super-powers' ought to update the FAQ entry on this]). 10pts left, and you are allowed to leave comments on posts. 50pts more, down-voting, and another 150pts more, re-tagging questions. - The usual way to achieve this would be: contribute like crazy...)
(Dec 15 '11 at 07:52)
fbahr ♦
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If x is a parameter: If x is a continuous variable, let me point you to: http://yetanothermathprogrammingconsultant.blogspot.com/2009/02/floor-in-minlp-model.html#comment-form Make sure your specify finite bounds for your integer variable. As you can see, the floor function can potentially be very expensive if the range of x is large. Thank you Gilead, I just looked at your blog and let me try it asap!
(Dec 12 '11 at 00:14)
Pavan
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That is not my blog but the blog of Erwin Kalvelagen. You should bookmark it for future reference.
(Dec 12 '11 at 00:16)
Gilead ♦
Ok... Thanks for the heads-up!
(Dec 12 '11 at 00:18)
Pavan
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A blog post on the subject : |
I hope Robert Fourer is in this OR-Exchange group. That certain AMPL google group has been (to my knowledge) is inactive for quite sometime. Meanwhile, let me fine tune my model first.
AMPL google group is definitely active. Bob answered a question as late as today (12-dec).