Re: [Cilib-users] Problem initialization

[<lab...@gm...>]

Sorry, I forgot to mention I want to use the PSO algorithm and initialize  
the swarm myself around some solution. I was looking at DataSetBuilder but  
I am not sure what its purpose is.
If there was an example, that would be great. Thanks,


On Nov 12, 2008 10:16am, Gary Pampara <gpa...@gm...> wrote:
> Hi,
>
>
>
> I'm not exactly sure what you mean by initialize a set of solutions.
>
>
>
> CIlib is divided into 3 main parts: (1) Algorithm, (2) Problem and (3)  
measurements. The other frameworks are not import
>
>
>
> The Algorithm is responsible for initialization and solution refinement,  
whereas the Problem itself does nothing more than provide the needed  
information about what the algorithm should be optimizing. Naturally the  
measurements are performed on the algorithm.
>
>
>
> Could you perhaps explain what algorithm you wish to use to solve this  
route planning problem?
>
>
>
> As for the problem itself, you may need to implement a problem and extend  
either the OptimisationProblem interface or inherit directly from the  
OptimisationProblemAdapter class. The Problem defines the domain in which  
the algorithm will operate.
>
>
>
> Based on your code snippet, your problem will have a domain associated  
with it (the problem search space) which is "dimensions"-dimensional, which  
is pre-populated with Real instances with bounds of (0, 6.28). This is  
mostly correct. During algorithm initialization the domain information of  
the problem will be used and, in the case of PopulationBasedAlgorithms, the  
entities will be initialized in that range. The data structure defined in  
the domain is not the data structure that is eventually used, it is merely  
the prototype that gets copied.
>
>
>
> I hope this helps. Please let me know which algorithm etc so that I might  
be able to steer you in the right direction to get a solution :)
>
>
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> Regards,
>
> Gary
>
>
>
> lab...@gm... wrote:
>
>
> Hello,
>
>
>
> What is the best way to initialize a problem with a set of solutions?
>
> It's a route planning problem to optimize the waypoints. I implemented my  
problem using the OptimizationProblem interface and the I have set the  
domain as such (see below) but I want to initialize the swarm to a set of  
solutions. Any hints and ideas? Code will be wonderful too. TIA
>
>
>
> public DomainRegistry getDomain() {
>
> DomainRegistry registry = new DomainRegistry();
>
> registry.setBuiltRepresenation(new  
net.sourceforge.cilib.type.types.container.Vector(dimensions, new Real (0,  
6.28)));
>
> return registry;
>
> }
>
>
>
> Sorry, I'm working against a deadline.
>
> myriam
>
>
>
>
>
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