org.knime.base.node.mine.mds.distances
Class CosinusDistanceManager

java.lang.Object
  extended by org.knime.base.node.mine.mds.distances.CosinusDistanceManager
All Implemented Interfaces:
DistanceManager

public class CosinusDistanceManager
extends Object
implements DistanceManager

Author:
Kilian Thiel, University of Konstanz

Constructor Summary
CosinusDistanceManager(double offset, boolean fuzzy)
          Creates new instance of CosinusDistanceManager with given offset and fuzzy flag.
 
Method Summary
 double getDistance(DataPoint point1, DataPoint point2)
          Returns the distance between the given DataPoints, point1 and point2.
 double getDistance(DataRow row1, DataRow row2)
          Returns the distance between the given DataRows, row1 and row2.
 String getType()
          
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

CosinusDistanceManager

public CosinusDistanceManager(double offset,
                              boolean fuzzy)
Creates new instance of CosinusDistanceManager with given offset and fuzzy flag. If fuzzy is set true, only fuzzy columns are considered to compute distance, if false only number columns.

Parameters:
offset - offset to use for distance calculation
fuzzy - if true only fuzzy data is respected, if false only number data
Method Detail

getDistance

public double getDistance(DataRow row1,
                          DataRow row2)
Returns the distance between the given DataRows, row1 and row2. The distance metric is up to the concrete implementation.

Specified by:
getDistance in interface DistanceManager
Parameters:
row1 - First DataRow to compute distance.
row2 - Second DataRow to compute distance.
Returns:
The distance between given DataRows.

getDistance

public double getDistance(DataPoint point1,
                          DataPoint point2)
Returns the distance between the given DataPoints, point1 and point2. The distance metric is up to the concrete implementation.

Specified by:
getDistance in interface DistanceManager
Parameters:
point1 - First DataPoint to compute distance.
point2 - Second DataPoint to compute distance.
Returns:
The distance between given DataRows.

getType

public String getType()

Specified by:
getType in interface DistanceManager
Returns:
The type of the DistanceManager. See DistanceManagerFactory for valid types.
See Also:
#COS_DIST, #EUCLIDEAN_DIST, #MANHATTAN_DIST


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University of Konstanz, Germany.
Chair for Bioinformatics and Information Mining, Prof. Dr. Michael R. Berthold.
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