com.numericalmethod.suanshu.optimization.initialization

Class UniformDistributionOverBox2

java.lang.Object

com.numericalmethod.suanshu.optimization.initialization.UniformDistributionOverBox2

All Implemented Interfaces:

BuildInitials, java.io.Serializable

public class UniformDistributionOverBox2
extends java.lang.Object
implements BuildInitials

This algorithm, by perturbing each grid point by a small random scale, generates a set of initials uniformly distributed over a box region, with some degree of irregularity or randomness.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
UniformDistributionOverBox2(double scale, RealInterval[] bounds, int discretization) Construct a generator to uniformly sample points over a feasible region.
UniformDistributionOverBox2(double scale, RealInterval[] bounds, int[] discretizations) Construct a generator to uniformly sample points over a feasible region.
UniformDistributionOverBox2(double scale, RealInterval[] bounds, int[] discretizations, RandomLongGenerator rng) Construct a generator to uniformly sample points over a feasible region.
UniformDistributionOverBox2(double scale, RealInterval[] bounds, int discretization, RandomLongGenerator rng) Construct a generator to uniformly sample points over a feasible region.

Method Summary

Modifier and Type	Method and Description
Vector[]	getInitials() Generate a set of initial points for optimization.
Vector[]	getInitials(Vector... notused) Generate a set of initial points for optimization from the fewer than required points.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

UniformDistributionOverBox2

public UniformDistributionOverBox2(double scale,
                                   RealInterval[] bounds,
                                   int[] discretizations,
                                   RandomLongGenerator rng)

Construct a generator to uniformly sample points over a feasible region.

Parameters:

scale - the small percentage of disturbance, e.g., 10%

bounds - the feasible box region

discretizations - the number of discretization levels in each dimension (bound)

rng - a uniform random number generator

UniformDistributionOverBox2

public UniformDistributionOverBox2(double scale,
                                   RealInterval[] bounds,
                                   int[] discretizations)

Construct a generator to uniformly sample points over a feasible region.

Parameters:

scale - the small percentage of disturbance, e.g., 10%

bounds - the feasible box region

discretizations - the number of discretization in each dimension (bound)

UniformDistributionOverBox2

public UniformDistributionOverBox2(double scale,
                                   RealInterval[] bounds,
                                   int discretization,
                                   RandomLongGenerator rng)

Construct a generator to uniformly sample points over a feasible region.

Parameters:

scale - the small percentage of disturbance, e.g., 10%

bounds - the feasible box region

discretization - the number of discretization in all dimensions (bounds)

rng - a uniform random number generator

UniformDistributionOverBox2

public UniformDistributionOverBox2(double scale,
                                   RealInterval[] bounds,
                                   int discretization)

Construct a generator to uniformly sample points over a feasible region.

Parameters:

scale - the small percentage of disturbance, e.g., 10%

bounds - the feasible box region

discretization - the number of discretization in all dimensions (bounds)

Method Detail

getInitials

public Vector[] getInitials(Vector... notused)

Description copied from interface: BuildInitials

Generate a set of initial points for optimization from the fewer than required points.

Specified by:

getInitials in interface BuildInitials

Parameters:

notused - initial points; null if no initial supplied

Returns:

a full set of initial points

getInitials

public Vector[] getInitials()

Generate a set of initial points for optimization.

Returns:

a full set of initial points