Re: [Cilib-users] Problem initialization

[Gary P. <gpa...@gm...>]

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 :)

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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