at.tuwien.ifs.somtoolbox.layers.metrics
Class L2Metric
java.lang.Object
at.tuwien.ifs.somtoolbox.layers.metrics.AbstractMetric
at.tuwien.ifs.somtoolbox.layers.metrics.L2Metric
- All Implemented Interfaces:
- DistanceMetric, Comparable<DistanceMetric>
- Direct Known Subclasses:
- L2MetricFast, MnemonicSOMMetric
public class L2Metric
- extends AbstractMetric
- implements DistanceMetric
Implements the L2 or Euclidean metric. Though this class could us at.tuwien.ifs.somtoolbox.layers.metrics.LNMetric,
for performance issues this less complex computation should be used.
- Version:
- $Id: L2Metric.java 3883 2010-11-02 17:13:23Z frank $
- Author:
- Michael Dittenbach
Method Summary |
double |
distance(double[] vector1,
double[] vector2)
Calculates the distance between two vectors provided by argument vector1 and vector2 . |
static void |
main(String[] args)
|
double |
norm(double[] vector)
|
String |
toString()
|
Methods inherited from class at.tuwien.ifs.somtoolbox.layers.metrics.AbstractMetric |
checkDimensions, checkDimensions, compareTo, distance, distance, distance, distance, distance, distance, distance, distance, instantiate, instantiateNice, meanVector, performanceTest, setMetricParams, transformValue, transformVector |
Methods inherited from interface at.tuwien.ifs.somtoolbox.layers.metrics.DistanceMetric |
distance, distance, distance, distance, distance, distance, distance, distance, setMetricParams, transformValue, transformVector |
L2Metric
public L2Metric()
distance
public double distance(double[] vector1,
double[] vector2)
throws MetricException
- Description copied from interface:
DistanceMetric
- Calculates the distance between two vectors provided by argument
vector1
and vector2
. A
MetricException
is thrown, if the dimensionalities of the two vectors differ.
- Specified by:
distance
in interface DistanceMetric
- Specified by:
distance
in class AbstractMetric
- Parameters:
vector1
- first vector.vector2
- second vector.
- Returns:
- the distance between
vector1
and vector2
.
- Throws:
MetricException
- if the dimensionalities of the two vectors differ.- See Also:
DistanceMetric.distance(double[], double[])
norm
public double norm(double[] vector)
- Returns:
- the norm of the vector.
toString
public String toString()
- Overrides:
toString
in class Object
main
public static void main(String[] args)