comirva.util.external
Class TopNItemsDistances

java.lang.Object
  comirva.util.external.TopNItemsDistances

public class TopNItemsDistances
extends Object

This class only extracts the nearest N items (per item) from a complete distance matrix and stores them in another matrix into a text file.

Field Summary

static int	CLOSEST_N
static boolean	USE_IDX_INSTEADOF_FILENAME

Constructor Summary

TopNItemsDistances()

Method Summary

static void	doQuickSort(int leftBorder, int rightBorder, double[] sortArray, String[] metaDataArray) Uses Quick-Sort to sort the array sortArray and adapt the array metaDataArray accordingly.
static void	main(String[] args)

Methods inherited from class java.lang.Object

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

Field Detail

CLOSEST_N

public static int CLOSEST_N

USE_IDX_INSTEADOF_FILENAME

public static boolean USE_IDX_INSTEADOF_FILENAME

Constructor Detail

TopNItemsDistances

public TopNItemsDistances()

Method Detail

main

public static void main(String[] args)

doQuickSort

public static void doQuickSort(int leftBorder,
                               int rightBorder,
                               double[] sortArray,
                               String[] metaDataArray)

Uses Quick-Sort to sort the array sortArray and adapt the array metaDataArray accordingly. Sorting is performed in decreasing order.

Parameters:

leftBorder - the left border for the Quick-Sort algorithm

rightBorder - the right border for the Quick-Sort algorithm

sortArray - a float[] representing the values to be sorted

metaDataArray - a String[] representing the meta-data to be updated according to new order after the sort