On Mon, Mar 16, 2009 at 8:50 AM, Malcolm Ryan wrote:
> Is there any guarantee on the order of calls to the functions status,
> description and commit on a Branching?
>
> In particular, I want to know whether I rely on status always being
> called before description so that I can cache the results
Is there any guarantee on the order of calls to the functions status,
description and commit on a Branching?
In particular, I want to know whether I rely on status always being
called before description so that I can cache the results of the
status computation and avoid having to re-determin
Hi Guido
Thank you very much for the reply. I do have some follow-up questions:
>> 3) I want to make a branching that follows the standard "fail-first"
>> heuristic, that is, choose the value with the smallest domain possible
>> and then use a special value heuristic. As I understand I need to
>>
Morten Boysen wrote:
> I am trying to add new propagators to the FlatZincGecode space, and I
> have some question regarding this:
>
> 1) What is the defualt variable order for the FlatZincGecode space?
First branch over the IntVars with VAR_NONE, VAL_MIN, then over the
BoolVars with NONE, VAL_MI
Hi,
I am trying to add new propagators to the FlatZincGecode space, and I
have some question regarding this:
1) What is the defualt variable order for the FlatZincGecode space?
2) If I want to add my own branching heuristic, I believe I need to
remove the branchings posted to the FlatZincGecod
Dhananjay Thiruvady wrote:
> I want to know how I could use branch with minimization of an
> objective function?
If you mean branch and bound, have a look at one of our examples, like
golomb-ruler. You typically constrain one variable to be the result
of the objective function, and then use
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Subject: [gecode-users] Branching question
Hi,
I want to know how I could use branch with minimization of an objective
function?
Thanks,
Dhananjay
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Hi,
I want to know how I could use branch with minimization of an objective
function?
Thanks,
Dhananjay
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Debdeep Banerjee wrote:
> I need to assign the variables in a particular order. I have three
> disjoint set of variable, say, S1, S2, S3. I need to tell the solver
> that first assign the variables from S1, then S2 and then S3. How
> can i
> do it in Gecode/J ?
> What I did was using three differ
hi,
I need to assign the variables in a particular order. I have three
disjoint set of variable, say, S1, S2, S3. I need to tell the solver
that first assign the variables from S1, then S2 and then S3. How can i
do it in Gecode/J ?
What I did was using three different branching statements
bran
Hi!
I would like to create my own branching. It should assign values to the
Var's in the order i choose.
I was always using branch(..size_max, split_min) and now I can not figure
out how to code a different branching. if anyone have an example on it, this
would be perfect to grasp the way to i
Hi.
It would be very helpful to have a most trivial example -
maybe a re-implementation of one of the ViewValBranchings? :)
I would be grateful for any additional pointers. Should I look
into Gecode/J maybe to find further examples?
You could have a look at the file QueensJavaPropagator.java
h
Hi,
I am currently trying to work out how to create a custom branching.
The examples I am looking at are BlackHoleBranch and QueenBranch.
I was wondering, if anyone else has already written custom
branchings I could possibly study as additional examples.
It would be very helpful to have a most
Hello Martin,
thank you very much !! It was exactly the information, I needed. (-:
I am amusing myself of selecting the Var like ByNone, but in reverse
order...
There are more open questions of course,
but for now merry christmas,
Kilian
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Ge
Hi Kilian,
inserting a branching directly into a space is very easy and doesnt need
the wrapper function "branch".
you can do it like that in the constructor of your space:
e.g. for the integer variables
// init the variable array with your vars to branch on
// e.g. (22 vars with vals 0..9):
Kilian Sprotte
Sent: Thursday, December 21, 2006 1:43 PM
To: [EMAIL PROTECTED]
Subject: [gecode-users] branching...
Hi,
thinking about how to make gecol at least a little more flexible, I have
some general little questions. :)
As gecol does not allow for subclassing Space
(the SWIG CFFI wrapper
Hi,
thinking about how to make gecol at least a little more flexible,
I have some general little questions. :)
As gecol does not allow for subclassing Space
(the SWIG CFFI wrapper creation is not really ready
yet for c++), I am using the following hard-wired problem
space:
class GecolSpace : pu
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