Claudio, 1. Yes is a constraint variable, it's 1 if I is between Begin and End, and 0 otherwise. 2. This is called reified constraint http://eclipseclp.org/doc/bips/lib/ic/HE-3.html Sergii. On Sat, Jun 29, 2013 at 1:48 PM, Claudio Cesar de Sá <claudio.sa_at_...361....>wrote: > > Sergi > > About your model below, two lines are fuzzy for me: > 1. Yes #= (I #>= Begin and I #=< End), > the variable Yes is not a constraint variable? > Which values this variable will receive? > > 2. #=(Xi, 1, Yes) ), > What's means this prefix notation? > > Thanks once > > > claudio > > > > > 2013/6/21 Sergii Dymchenko <kit1980_at_...6...> > >> Hi, >> >> In your model your should not have any predicates like `member`, only >> constraints. Basically, your model should not leave any Prolog choice >> points. >> >> And your program can be much much simpler and shorter. My attempt: >> >> :- lib(ic). >> :- lib(branch_and_bound). >> >> model(SizeWindow, Vs, Xs, Total) :- >> length(Vs, N), >> dim(Xs, [N]), >> Xs :: 0..1, >> [Begin, End] :: 1..N, >> End - Begin #= SizeWindow, >> ( foreacharg(Xi, Xs, I), param(Begin, End) do >> Yes #= (I #>= Begin and I #=< End), >> #=(Xi, 1, Yes) ), >> array_list(Xs, Xslist), >> Total #= Vs * Xslist. >> >> find(Xs, Total) :- >> Cost #= -Total, >> minimize(search(Xs, 0, first_fail, indomain, complete, []), Cost). >> >> go :- >> Vs = [60, 60, 60, 25, 30, 47, 65, 55, 71, 95], >> model(5, Vs, Xs, Total), >> find(Xs, Total), >> writeln([Xs, Total]). >> >> >> Sergii, >> >> >> On Fri, Jun 21, 2013 at 11:50 AM, Claudio Cesar de Sá < >> claudio.sa_at_...347...> wrote: >> >>> Hi >>> >>> The program attached select a contiguous set of the values in an array. >>> This contiguous values >>> in array is like a window or frame over this array. I am doing this find >>> the maximal of this subset in >>> a array. >>> >>> The program is woking fine .... but it is halting for one solution per >>> time. >>> The minimize predicate should be exploring all the possibilities ... >>> trying to minimize a cost function. >>> Why the branch-bound is not working? >>> >>> To run it, press go. >>> >>> Thanks in advance and excuse for the code comments in Portugese >>> >>> >>> >>> -- >>> >>> Obrigado >>> >>> claudio >>> ( >>> )) >>> |""|-. >>> |__|-' >>> >>> >>> ********************************************************************** >>> http://claudiocesar.wordpress.com/about/ >>> *********************************************************************** >>> >>> >>> ------------------------------------------------------------------------------ >>> This SF.net email is sponsored by Windows: >>> >>> Build for Windows Store. >>> >>> http://p.sf.net/sfu/windows-dev2dev >>> _______________________________________________ >>> ECLiPSe-CLP-Users mailing list >>> ECLiPSe-CLP-Users_at_lists.sourceforge.net >>> https://lists.sourceforge.net/lists/listinfo/eclipse-clp-users >>> >>> >> >> >> ------------------------------------------------------------------------------ >> This SF.net email is sponsored by Windows: >> >> Build for Windows Store. >> >> http://p.sf.net/sfu/windows-dev2dev >> _______________________________________________ >> ECLiPSe-CLP-Users mailing list >> ECLiPSe-CLP-Users_at_lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/eclipse-clp-users >> >> > > > -- > > Obrigado > > claudio > ( > )) > |""|-. > |__|-' > > > ********************************************************************** > http://claudiocesar.wordpress.com/about/ > *********************************************************************** >Received on Sat Jun 29 2013 - 22:33:06 CEST
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