tag:blogger.com,1999:blog-593563533834706486.post2693384301921570750..comments2024-03-28T10:35:10.453-04:00Comments on Yet Another Math Programming Consultant: Convert GAMS to OMLErwin Kalvelagenhttp://www.blogger.com/profile/09496091402502236997noreply@blogger.comBlogger8125tag:blogger.com,1999:blog-593563533834706486.post-29577818622206311102010-03-24T18:16:00.729-04:002010-03-24T18:16:00.729-04:00thanks, please am novice in gams, can u help with ...thanks, please am novice in gams, can u help with sample codes, please?Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-593563533834706486.post-32466074552085145822010-03-23T18:01:03.372-04:002010-03-23T18:01:03.372-04:00Constrained regression is very easy to model in GA...Constrained regression is very easy to model in GAMS. The simplest way is to put a sum of squared residuals in the objective.Erwin Kalvelagenhttps://www.blogger.com/profile/09496091402502236997noreply@blogger.comtag:blogger.com,1999:blog-593563533834706486.post-318624227262794352010-03-23T17:47:52.280-04:002010-03-23T17:47:52.280-04:00Need helps in GAMS code to performed constrained L...Need helps in GAMS code to performed constrained Linear regression, ... such that <br /><br />Min Y(j,t) = sum(Y(i,t-1)*P(i,j)) i =1,2,3 j = 1, 2,3 and t = 1, 2, 3,4,5. P(i,j) are parameter, and Y(j,t) are proportion observed of item j <br />S.t 0 <= P(i,j) <= 1 and sum(P(i,j))= 1 sum over j. <br />Year y1 y2 y3<br />1 0.2794 0.4008 0.3198<br />2 0.3418 0.3301 0.3281<br />3 0.3867 0.3013 0.312<br />4 0.4074 0.2906 0.302<br /><br />ThanksAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-593563533834706486.post-80783220774188214062009-05-29T04:03:07.044-04:002009-05-29T04:03:07.044-04:00Just some MILP modelling notes you have written be...Just some MILP modelling notes you have written before, thanks.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-593563533834706486.post-6692002085160759172009-05-28T11:33:32.131-04:002009-05-28T11:33:32.131-04:00Any document in particular you need?Any document in particular you need?Erwin Kalvelagenhttps://www.blogger.com/profile/09496091402502236997noreply@blogger.comtag:blogger.com,1999:blog-593563533834706486.post-60151279141184116822009-05-28T11:31:27.966-04:002009-05-28T11:31:27.966-04:00Erwin, I am one your GAMS follower, is that possib...Erwin, I am one your GAMS follower, is that possible for you to publish some GAMS and mathematical programming note you wrote before ?<br />There are a number of pdf notes about LP/NLP and MILP in your personal site at GAMS before, we cant see them now.<br />ThanksAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-593563533834706486.post-97824662620349482009-05-28T10:35:48.384-04:002009-05-28T10:35:48.384-04:00This is part of GAMS 23.0 (the currently shipping ...This is part of GAMS 23.0 (the currently shipping GAMS system).Erwin Kalvelagenhttps://www.blogger.com/profile/09496091402502236997noreply@blogger.comtag:blogger.com,1999:blog-593563533834706486.post-58241976778143706052009-05-28T06:32:20.539-04:002009-05-28T06:32:20.539-04:00extremely impressive !
Can the user use such funct...extremely impressive !<br />Can the user use such functions or it is your own addin ?<br />ThanksAnonymousnoreply@blogger.com