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SSJ
3.2.1
Stochastic Simulation in Java
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Implements a recurrence-based point set defined via a linear congruential recurrence of the form \(x_i = a x_{i-1} \mod n\) and \(u_i = x_i / n\). More...
Public Member Functions | |
| LCGPointSet (int n, int a) | |
| Constructs and stores the set of cycles for an LCG with modulus \(n\) and multiplier \(a\). More... | |
| LCGPointSet (int b, int e, int c, int a) | |
| Constructs and stores the set of cycles for an LCG with modulus \(n = b^e + c\) and multiplier \(a\). | |
| String | toString () |
| int | geta () |
| Returns the value of the multiplier \(a\). | |
Public Member Functions inherited from CycleBasedPointSet | |
| double | getCoordinate (int i, int j) |
| void | addRandomShift (int d1, int d2, RandomStream stream) |
Adds a random shift to all the points of the point set, using stream stream to generate the random numbers, for coordinates d1 to d2 - 1. More... | |
| void | clearRandomShift () |
| Erases the current random shift, if any. | |
| int | getDimension () |
| PointSetIterator | iterator () |
| String | toString () |
| String | formatPoints () |
Public Member Functions inherited from PointSet | |
| int | getDimension () |
| Returns the dimension (number of available coordinates) of the point set. More... | |
| int | getNumPoints () |
| Returns the number of points. More... | |
| abstract double | getCoordinate (int i, int j) |
| Returns \(u_{i,j}\), the coordinate \(j\) of the point \(i\). More... | |
| PointSetIterator | iterator () |
| Constructs and returns a point set iterator. More... | |
| void | setStream (RandomStream stream) |
Sets the random stream used to generate random shifts to stream. More... | |
| RandomStream | getStream () |
| Returns the random stream used to generate random shifts. More... | |
| void | randomize (PointSetRandomization rand) |
Randomizes the point set using the given rand. More... | |
| void | addRandomShift (int d1, int d2, RandomStream stream) |
| This method does nothing for this generic class. More... | |
| void | addRandomShift (RandomStream stream) |
| This method does nothing for this generic class. More... | |
| void | addRandomShift (int d1, int d2) |
Similar to addRandomShift(d1, d2, stream), with the current random stream. | |
| void | addRandomShift () |
Similar to addRandomShift(0, d2, stream) with the current random stream and d2 the dimension of the current random shift. | |
| void | clearRandomShift () |
| Erases the current random shift, if any. | |
| void | randomize (int fromDim, int toDim, RandomStream stream) |
By default, this method simply calls addRandomShift (fromDim, toDim, stream), which does nothing. | |
| void | randomize (RandomStream stream) |
| By default, this method simply calls randomize(0, dim, stream). | |
| void | randomize (int d1, int d2) |
By default, this method simply calls addRandomShift(d1, d2). | |
| void | randomize () |
By default, this method simply calls addRandomShift(). | |
| void | unrandomize () |
By default, this method simply calls clearRandomShift(). | |
| String | toString () |
| Formats a string that contains information about the point set. More... | |
| String | formatPoints () |
| Same as invoking formatPoints(n, d) with \(n\) and \(d\) equal to the number of points and the dimension of this object, respectively. More... | |
| String | formatPoints (int n, int d) |
| Formats a string that displays the same information as returned by toString, together with the first \(d\) coordinates of the first \(n\) points. More... | |
| String | formatPoints (PointSetIterator iter) |
| Same as invoking formatPoints(iter, n, d) with \(n\) and \(d\) equal to the number of points and the dimension, respectively. More... | |
| String | formatPoints (PointSetIterator iter, int n, int d) |
Same as invoking formatPoints(n, d), but prints the points by calling iter repeatedly. More... | |
| String | formatPointsBase (int b) |
| Similar to formatPoints(), but the points coordinates are printed in base \(b\). More... | |
| String | formatPointsBase (int n, int d, int b) |
| Similar to formatPoints(n, d), but the points coordinates are printed in base \(b\). More... | |
| String | formatPointsBase (PointSetIterator iter, int b) |
| Similar to formatPoints(iter), but the points coordinates are printed in base \(b\). More... | |
| String | formatPointsBase (PointSetIterator iter, int n, int d, int b) |
| Similar to formatPoints(iter, n, d), but the points coordinates are printed in base \(b\). More... | |
| String | formatPointsNumbered () |
| Same as invoking formatPointsNumbered(n, d) with \(n\) and \(d\) equal to the number of points and the dimension, respectively. More... | |
| String | formatPointsNumbered (int n, int d) |
| Same as invoking formatPoints(n,d), except that the points are numbered. More... | |
Additional Inherited Members | |
Protected Member Functions inherited from CycleBasedPointSet | |
| void | addCycle (AbstractList c) |
Adds the cycle c to the list of all cycles. More... | |
Protected Attributes inherited from CycleBasedPointSet | |
| int | numCycles = 0 |
| ObjectArrayList | cycles = new ObjectArrayList() |
Protected Attributes inherited from PointSet | |
| double | EpsilonHalf = 1.0 / Num.TWOEXP[55] |
| int | dim = 0 |
| int | numPoints = 0 |
| int | dimShift = 0 |
| int | capacityShift = 0 |
| RandomStream | shiftStream |
Static Protected Attributes inherited from PointSet | |
| static final int | MAXBITS = 31 |
Implements a recurrence-based point set defined via a linear congruential recurrence of the form \(x_i = a x_{i-1} \mod n\) and \(u_i = x_i / n\).
The implementation is done by storing the values of \(u_i\) over the set of all cycles of the recurrence.
| LCGPointSet | ( | int | n, |
| int | a | ||
| ) |
Constructs and stores the set of cycles for an LCG with modulus \(n\) and multiplier \(a\).
If the LCG has full period length \(n-1\), there are two cycles, the first one containing only 0 and the second one of period length \(n-1\).
| n | required number of points and modulus of the LCG |
| a | generator \(a\) of the LCG |
1.8.14