it.uniroma2.sag.kelp.data.manipulator

Class VectorConcatenationManipulator

java.lang.Object

it.uniroma2.sag.kelp.data.manipulator.VectorConcatenationManipulator

All Implemented Interfaces:

Manipulator

public class VectorConcatenationManipulator
extends Object
implements Manipulator

VectorConcatenationManipulator is an implementations of Manipulator that allows to concatenate vectors into a new SparseVector representation. It is useful when a linear approach must be applied to multiple vector representations

Author:

Simone Filice

Constructor Summary

Constructors

Constructor and Description
VectorConcatenationManipulator(String concatenationName, List<String> representationsToBeConcatenated, List<Float> weights)

Method Summary

Methods

Modifier and Type	Method and Description
static SparseVector	concatenateVectors(Example example, List<String> representationsToConcatenated, List<Float> weights) Returns a SparseVector corresponding to the concatenation of the vectors in example identified with representationsToBeMerged Each vector is scaled with respect to the corresponding scaling factor in weights
static void	concatenateVectors(Example example, List<String> representationsToBeConcatenated, List<Float> weights, String combinationName) Add a new representation identified with combinationName corresponding to the concatenation of the vectors in example identified with representationsToBeMerged Each vector is scaled with respect to the corresponding scaling factor in weights
void	manipulate(Example example)

Methods inherited from class java.lang.Object

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

Constructor Detail

VectorConcatenationManipulator

public VectorConcatenationManipulator(String concatenationName,
                              List<String> representationsToBeConcatenated,
                              List<Float> weights)

Method Detail

manipulate

public void manipulate(Example example)

Specified by:

manipulate in interface Manipulator

concatenateVectors

public static SparseVector concatenateVectors(Example example,
                              List<String> representationsToConcatenated,
                              List<Float> weights)

Returns a SparseVector corresponding to the concatenation of the vectors in example identified with representationsToBeMerged Each vector is scaled with respect to the corresponding scaling factor in weights

Parameters:

example - the example whose vectors must be concatenated

representationsToConcatenated - the identifiers of the vectors to be concatenated

weights - the scaling factors of the vectors to be concatenated

Returns:

a SparseVector corresponding to the concatenation of the vectors

concatenateVectors

public static void concatenateVectors(Example example,
                      List<String> representationsToBeConcatenated,
                      List<Float> weights,
                      String combinationName)

Add a new representation identified with combinationName corresponding to the concatenation of the vectors in example identified with representationsToBeMerged Each vector is scaled with respect to the corresponding scaling factor in weights

Parameters:

example - the example whose vectors must be concatenated

representationsToBeConcatenated - the identifiers of the vectors to be concatenated

weights - the scaling factors of the vectors to be concatenated

combinationName - the name of the new representation to be added