[gecode-users] large Instance

[Christian Schulte]

Ah okay,

 

But this is just a four dimensional array of decision variables, so that's
no problem of course. The easiest way to do it in Gecode is to map the four
dimensional array to a simple one-dimensional array (a simple access
function the does the index computation will do).

 

Best

Christian

 

--

Christian Schulte, Professor of Computer Science, KTH,
www.ict.kth.se/~cschulte/

 

 

From: Amin Alah Mousavi Nogholi [mailto:a.mousavinogholi at qut.edu.au] 
Sent: Monday, September 02, 2013 11:11 AM
To: cschulte at kth.se
Subject: RE: [gecode-users] large Instance

 

Thanks Christian,

 

X[i][m][d][t] is such a 4 dimensional decision variable where I,m,d and t
have finite domain (e.g. i=1,2,.,10000; m=1,..,10; d=1,.10; t=1,.,50;)

 

Regards,

 

Amin

 

From: Christian Schulte [mailto:cschulte at kth.se] 
Sent: Monday, 2 September 2013 7:05 PM
To: Amin Alah Mousavi Nogholi; users at gecode.org
Subject: RE: [gecode-users] large Instance

 

Hi,

 

Almost impossible to say whether this will work or not. Gecode can use
recomputation to bring down memory requirements during search at the
expensive of increased runtime. One would have to try.

 

I have no idea what a 4 dimensional decision variable is.

 

Best

Christian

 

--

Christian Schulte, Professor of Computer Science, KTH,
www.ict.kth.se/~cschulte/

 

 

From: users-bounces at gecode.org [mailto:users-bounces at gecode.org] On Behalf
Of Amin Alah Mousavi Nogholi
Sent: Monday, September 02, 2013 2:31 AM
To: users at gecode.org
Subject: [gecode-users] large Instance

 

Hi,

 

I need to solve a problem with millions of decision variables and
constraints. I could not solve this problem by CPlex Cp optimiser. I am just
wondering that Gecode can solve or not? Does anybody has such an instance?

 

The second question is that I have a 4-dimensional decision variable. Can
Gecode handle this decision variable.

 

Thanks in advance,

 

Amin

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.gecode.org/pipermail/users/attachments/20130902/6d1856fb/attachment-0001.html>