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

java.lang.Object
- elki.data.uncertain.AbstractUncertainObject
- - elki.data.uncertain.SimpleGaussianContinuousUncertainObject

All Implemented Interfaces:

FeatureVector<java.lang.Double>, SpatialComparable, UncertainObject
```
public class SimpleGaussianContinuousUncertainObject
extends AbstractUncertainObject
```
Gaussian model for uncertain objects, sampled from a 3-sigma bounding box. This model does not support covariance, but all distributions are axis-aligned. TODO: currently, only a 3 sigma bounding box is supported.

Since:

0.7.0

Author:

Erich Schubert

Nested Class Summary

Nested Classes
Modifier and Type Class Description

private static class SimpleGaussianContinuousUncertainObject.Factory
Factory class for this data type.

Field Summary

Fields
Modifier and Type	Field	Description
`private static double`	`DIV`	Scaling factor from bounding box width to standard deviations.
`static FeatureVector.Factory<SimpleGaussianContinuousUncertainObject,?>`	`FACTORY`	Vector factory.

Fields inherited from class elki.data.uncertain.AbstractUncertainObject
bounds, DEFAULT_TRY_LIMIT

Fields inherited from interface elki.data.FeatureVector
TYPE

Fields inherited from interface elki.data.uncertain.UncertainObject
DISCRETE_UNCERTAIN_OBJECT, UNCERTAIN_OBJECT_FIELD

Constructor Summary

Constructors
Constructor Description

SimpleGaussianContinuousUncertainObject(SpatialComparable bounds)
Constructor.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`DoubleVector`	`drawSample(java.util.Random rand)`	Draw a random sampled instance.
`DoubleVector`	`getCenterOfMass()`	Get the center of mass of the uncertain object.

Methods inherited from class elki.data.uncertain.AbstractUncertainObject
computeBounds, getDimensionality, getMax, getMin, getValue

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

Methods inherited from interface elki.data.FeatureVector
toString

- Field Detail
  - FACTORY
```
public static final FeatureVector.Factory<SimpleGaussianContinuousUncertainObject,?> FACTORY
```
    Vector factory.
  - DIV
```
private static final double DIV
```
    Scaling factor from bounding box width to standard deviations. Bounding box is 6 standard deviations in width (three on each side)!
    
    See Also:
    
    Constant Field Values
- Constructor Detail
  - SimpleGaussianContinuousUncertainObject
```
public SimpleGaussianContinuousUncertainObject(SpatialComparable bounds)
```
    Constructor.
    
    Parameters:
    
    bounds - Bounding box (3 sigma)
- Method Detail
  - getCenterOfMass
```
public DoubleVector getCenterOfMass()
```
    Description copied from interface: UncertainObject
    
    Get the center of mass of the uncertain object.
    
    Specified by:
    
    getCenterOfMass in interface UncertainObject
    
    Specified by:
    
    getCenterOfMass in class AbstractUncertainObject
    
    Returns:
    
    Center of mass.
  - drawSample
```
public DoubleVector drawSample(java.util.Random rand)
```
    Description copied from interface: UncertainObject
    
    Draw a random sampled instance.
    
    Specified by:
    
    drawSample in interface UncertainObject
    
    Specified by:
    
    drawSample in class AbstractUncertainObject
    
    Parameters:
    
    rand - Random generator
    
    Returns:
    
    Sampled object.