de.jstacs.data.alphabets
Class DiscreteAlphabetMapping

java.lang.Object
  de.jstacs.data.alphabets.DiscreteAlphabetMapping

All Implemented Interfaces:

Storable

public class DiscreteAlphabetMapping
extends Object
implements Storable

This class implements the transformation of discrete values to other discrete values which define a DiscreteAlphabet.

Author:

Jens Keilwagen

Constructor Summary

DiscreteAlphabetMapping(int[] newValues, DiscreteAlphabet newAlphabet)
The main constructor creating a DiscreteAlphabetMapping.

DiscreteAlphabetMapping(StringBuffer xml)
The standard constructor for the interface Storable.

Method Summary

double	getLogNumberOfSimilarSymbols(int oldValue) This method returns the logarithm of the number of old values that yield the same new value.
DiscreteAlphabet	getNewAlphabet() Returns the new Alphabet that is used for mapping.
int	getNewDiscreteValue(int oldValue) This method implements the main transformation of the values.
StringBuffer	toXML() This method returns an XML representation as StringBuffer of an instance of the implementing class.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

DiscreteAlphabetMapping

public DiscreteAlphabetMapping(int[] newValues,
                               DiscreteAlphabet newAlphabet)

The main constructor creating a DiscreteAlphabetMapping.

Parameters:

newValues - the assignment of the old value (index) to the new value (entry of the array)

newAlphabet - the new Alphabet

DiscreteAlphabetMapping

public DiscreteAlphabetMapping(StringBuffer xml)
                        throws NonParsableException

The standard constructor for the interface Storable. Creates a new DiscreteAlphabetMapping out of its XML representation.

Parameters:

xml - the XML representation as StringBuffer

Throws:

NonParsableException - if the DiscreteAlphabetMapping could not be reconstructed out of the XML representation (the StringBuffer could not be parsed)

See Also:

Storable

Method Detail

toXML

public StringBuffer toXML()

Description copied from interface: Storable

This method returns an XML representation as StringBuffer of an instance of the implementing class.

Specified by:

toXML in interface Storable

Returns:

the XML representation

getNewAlphabet

public DiscreteAlphabet getNewAlphabet()

Returns the new Alphabet that is used for mapping.

Returns:

the new Alphabet that is used for mapping.

getNewDiscreteValue

public int getNewDiscreteValue(int oldValue)

This method implements the main transformation of the values.

Parameters:

oldValue - the old value

Returns:

the new value

getLogNumberOfSimilarSymbols

public double getLogNumberOfSimilarSymbols(int oldValue)

This method returns the logarithm of the number of old values that yield the same new value.

Parameters:

oldValue - the old value

Returns:

the logarithm of the number of old values that yield the same new value

See Also:

MappedDiscreteSequence.getLogNumberOfPossibleOriginalSequences()