RandomGeneratedReferencePoints (ELKI: Environment for DeveLoping KDD-Applications Supported by Index-Structures)

java.lang.Object
- elki.utilities.referencepoints.RandomGeneratedReferencePoints

All Implemented Interfaces:

ReferencePointsHeuristic
```
public class RandomGeneratedReferencePoints
extends java.lang.Object
implements ReferencePointsHeuristic
```
Reference points generated randomly within the used data space.

Since:

0.3

Author:

Erich Schubert

Nested Class Summary

Nested Classes
Modifier and Type Class Description

static class RandomGeneratedReferencePoints.Par
Parameterization class.

Field Summary

Fields
Modifier and Type	Field	Description
`protected RandomFactory`	`rnd`	Random generator.
`protected int`	`samplesize`	Holds the sample size.
`protected double`	`scale`	Holds the scaling factor.

Constructor Summary

Constructors
Constructor	Description
`RandomGeneratedReferencePoints(int samplesize, double scale, RandomFactory rnd)`	Constructor.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`java.util.Collection<? extends NumberVector>`	`getReferencePoints(Relation<? extends NumberVector> db)`	Get the reference points for the given database.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - samplesize
```
protected int samplesize
```
    Holds the sample size.
  - scale
```
protected double scale
```
    Holds the scaling factor.
  - rnd
```
protected RandomFactory rnd
```
    Random generator.
- Constructor Detail
  - RandomGeneratedReferencePoints
```
public RandomGeneratedReferencePoints(int samplesize,
                                      double scale,
                                      RandomFactory rnd)
```
    Constructor.
    
    Parameters:
    
    samplesize - Size of desired sample set
    
    scale - Scaling factor
    
    rnd - Random generator
- Method Detail
  - getReferencePoints
```
public java.util.Collection<? extends NumberVector> getReferencePoints(Relation<? extends NumberVector> db)
```
    Description copied from interface: ReferencePointsHeuristic
    
    Get the reference points for the given database.
    
    Specified by:
    
    getReferencePoints in interface ReferencePointsHeuristic
    
    Parameters:
    
    db - Database
    
    Returns:
    
    Collection of reference points.