public virtual void Init(ParticleState particleState, double[] velocity, DimensionBound[] bounds = null)
{
CurrentState = particleState;
PersonalBest = particleState;
Velocity = velocity;
Bounds = bounds;
}
public static IParticle Create(PsoParticleType type,
int locationDim,
int fitnessDim,
IFitnessFunction<double[], double[]> function,
double restartEpsilon = double.MaxValue,
int iterationsToRestart = int.MaxValue,
DimensionBound[] bounds = null,
double[] initVelocity = null
)
{
IParticle particle = null;
var rand = RandomGenerator.GetInstance();
switch (type)
{
case PsoParticleType.Standard:
case PsoParticleType.FullyInformed:
particle = new StandardParticle(restartEpsilon, iterationsToRestart);
break;
case PsoParticleType.ChargedParticle:
particle = new ChargedParticle();
break;
case PsoParticleType.DummyParticle:
particle = new DummyParticle();
break;
}
var x = bounds != null ? rand.RandomVector(locationDim, bounds) : rand.RandomVector(locationDim);
particle.Init(new ParticleState(x, function.Evaluate(x)),
initVelocity ?? rand.RandomVector(locationDim, MinInitialVelocity, MaxInitialVelocity), bounds);
return particle;
}
public double[] RandomVector(int dim, DimensionBound[] bounds)
{
lock (_randomLock)
{
if (bounds == null) throw new ArgumentNullException();
var v = new double[dim];
for (var i = 0; i < dim; i++)
{
v[i] = Random.NextDouble() * (bounds[i].Max - bounds[i].Min) + bounds[i].Min;
}
return v;
}
}
public override void Init(ParticleState state, double[] velocity, DimensionBound[] bounds = null)
{
CurrentState = _proxy.GpuState;
}
public override void Init(ParticleState state, double[] velocity, DimensionBound[] bounds = null)
{
}