at.tuwien.ifs.somtoolbox.layers.metrics
Class L2MetricSparse
java.lang.Object
at.tuwien.ifs.somtoolbox.layers.metrics.AbstractMetric
at.tuwien.ifs.somtoolbox.layers.metrics.L2MetricSparse
- All Implemented Interfaces:
- DistanceMetric, Comparable<DistanceMetric>
public class L2MetricSparse
- extends AbstractMetric
Implements the L2 or Euclidean metric, considering only those values for the distance calculation that have non-zero
values for the first, second or both vectors, depending on the initialisation mode.
- Version:
- $Id: L2MetricSparse.java 3583 2010-05-21 10:07:41Z mayer $
- Author:
- Rudolf Mayer
Method Summary |
double |
distance(double[] vector1,
double[] vector2)
Calculates the distance between two vectors provided by argument vector1 and vector2 . |
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 |
mode
private DistanceMetric.SparcseMetricModes mode
L2MetricSparse
public L2MetricSparse()
- Initialises the metric with
DistanceMetric.SparcseMetricModes.FIRST_NON_ZERO
.
L2MetricSparse
public L2MetricSparse(DistanceMetric.SparcseMetricModes mode)
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[])
toString
public String toString()
- Overrides:
toString
in class Object