umontreal.iro.lecuyer.hups

Class ContainerPointSet

java.lang.Object

umontreal.iro.lecuyer.hups.PointSet

umontreal.iro.lecuyer.hups.ContainerPointSet

Direct Known Subclasses:

AntitheticPointSet, BakerTransformedPointSet, RandShiftedPointSet

public abstract class ContainerPointSet
extends PointSet

This acts as a generic base class for all container classes that contain a point set and apply some kind of transformation to the coordinates to define a new point set. One example of such transformation is the antithetic map, applied by the container class AntitheticPointSet, where each output coordinate u_{i, j} is transformed into 1 - u_{i, j}. Another example is RandShiftedPointSet.

The class implements a specialized type of iterator for container point sets. This type of iterator contains itself an iterator for the contained point set and uses it to access the points and coordinates internally, instead of maintaining itself indices for the current point and current coordinate.

Constructor Summary

Constructors

Constructor and Description
ContainerPointSet()

Method Summary

Modifier and Type	Method and Description
void	addRandomShift(int d1, int d2, RandomStream stream) Calls addRandomShift(d1, d2, stream) of the contained point set.
void	addRandomShift(RandomStream stream) Calls addRandomShift(stream) of the contained point set.
void	clearRandomShift() Calls clearRandomShift() of the contained point set.
double	getCoordinate(int i, int j) Returns ui, j, the coordinate j of the point i.
int	getDimension() Returns the dimension of the contained point set.
int	getNumPoints() Returns the number of points of the contained point set.
PointSet	getOriginalPointSet() Returns the (untransformed) point set inside this container.
PointSetIterator	iterator() Constructs and returns a point set iterator.
void	randomize(PointSetRandomization rand) Randomizes the contained point set using rand.
java.lang.String	toString() Formats a string that contains information about the point set.

Methods inherited from class umontreal.iro.lecuyer.hups.PointSet

addRandomShift, addRandomShift, formatPoints, formatPoints, formatPoints, formatPoints, formatPointsBase, formatPointsBase, formatPointsBase, formatPointsBase, formatPointsNumbered, formatPointsNumbered, getStream, randomize, randomize, randomize, randomize, setStream, unrandomize

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

ContainerPointSet

public ContainerPointSet()

Method Detail

getOriginalPointSet

public PointSet getOriginalPointSet()

Returns the (untransformed) point set inside this container.

Returns:

the point set inside this container

getDimension

public int getDimension()

Returns the dimension of the contained point set.

Overrides:

getDimension in class PointSet

Returns:

the dimension of the contained point set

getNumPoints

public int getNumPoints()

Returns the number of points of the contained point set.

Overrides:

getNumPoints in class PointSet

Returns:

the number of points of the contained point set

getCoordinate

public double getCoordinate(int i,
                            int j)

Description copied from class: PointSet

Returns u_{i, j}, the coordinate j of the point i.

Specified by:

getCoordinate in class PointSet

Parameters:

i - index of the point to look for

j - index of the coordinate to look for

Returns:

the value of u_{i, j}

iterator

public PointSetIterator iterator()

Description copied from class: PointSet

Constructs and returns a point set iterator. The default implementation returns an iterator that uses the method getCoordinate (i,j) to iterate over the points and coordinates, but subclasses can reimplement it for better efficiency.

Overrides:

iterator in class PointSet

Returns:

point set iterator for the point set

randomize

public void randomize(PointSetRandomization rand)

Randomizes the contained point set using rand.

Overrides:

randomize in class PointSet

Parameters:

rand - PointSetRandomization to use

addRandomShift

public void addRandomShift(int d1,
                           int d2,
                           RandomStream stream)

Calls addRandomShift(d1, d2, stream) of the contained point set.

Overrides:

addRandomShift in class PointSet

Parameters:

d1 - lower dimension of the random shift

d2 - upper dimension of the random shift

stream - the random stream

addRandomShift

public void addRandomShift(RandomStream stream)

Calls addRandomShift(stream) of the contained point set.

Overrides:

addRandomShift in class PointSet

Parameters:

stream - the random stream

clearRandomShift

public void clearRandomShift()

Calls clearRandomShift() of the contained point set.

Overrides:

clearRandomShift in class PointSet

toString

public java.lang.String toString()

Description copied from class: PointSet

Formats a string that contains information about the point set.

Overrides:

toString in class PointSet

Returns:

string representation of the point set information