product_quantization
Class ResidualVectorComputation

java.lang.Object
  product_quantization.ResidualVectorComputation

public class ResidualVectorComputation
extends java.lang.Object

This class is used for computing residual vectors, given a coarse quantizer.

Author:

Eleftherios Spyromitros-Xioufis

Field Summary

private double[][]	coarseQuantizer
private int	numCentroids
private int	vectorLength

Constructor Summary

ResidualVectorComputation(double[][] coarseQuantizer, int vectorLength, int numCentroids)

Method Summary

private int	computeNearestCentroid(double[] vector) Finds and returns the index of the coarse quantizer's centroid which is closer to the given vector.
double[]	ComputeResidualVector(double[] vector)

Methods inherited from class java.lang.Object

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

Field Detail

coarseQuantizer

private double[][] coarseQuantizer

vectorLength

private int vectorLength

numCentroids

private int numCentroids

Constructor Detail

ResidualVectorComputation

public ResidualVectorComputation(double[][] coarseQuantizer,
                                 int vectorLength,
                                 int numCentroids)
                          throws java.lang.Exception

Throws:

java.lang.Exception

Method Detail

ComputeResidualVector

public double[] ComputeResidualVector(double[] vector)
                               throws java.lang.Exception

Throws:

java.lang.Exception

computeNearestCentroid

private int computeNearestCentroid(double[] vector)

Finds and returns the index of the coarse quantizer's centroid which is closer to the given vector.

Parameters:

vector -

Returns: