Class TriangularStep

java.lang.Object

io.nosqlbench.virtdata.library.basics.shared.from_long.to_long.TriangularStep

All Implemented Interfaces:

LongUnaryOperator

public class TriangularStep
extends Object
implements LongUnaryOperator

Compute a value which increases monotonically with respect to the cycle value. All values for f(X+(m>=0)) will be equal or greater than f(X). In effect, this means that with a sequence of monotonic inputs, the results will be monotonic as well as clustered. The values will approximate input/average, but will vary in frequency around a simple binomial distribution.

The practical effect of this is to be able to compute a sequence of values over inputs which can act as foreign keys, but which are effectively ordered.

Call for Ideas

Due to the complexity of generalizing this as a pure function over other distributions, this is the only function of this type for now. If you are interested in this problem domain and have some suggestions for how to extend it to other distributions, please join the project or let us know.

Constructor Summary

Constructors

Constructor	Description
TriangularStep(long average, long variance)

Method Summary

Modifier and Type	Method	Description
long	applyAsLong(long operand)
String	toString()

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.function.LongUnaryOperator

andThen, compose

Constructor Details

TriangularStep

public TriangularStep(long average,
 long variance)

Method Details

applyAsLong

public long applyAsLong(long operand)

Specified by:

applyAsLong in interface LongUnaryOperator

toString

public String toString()

Overrides:

toString in class Object