uk.ac.gla.dcs.renaissance.iqir.in
Class PureINExtractor

java.lang.Object
  uk.ac.gla.dcs.renaissance.iqir.in.PureINExtractor

Direct Known Subclasses:

BoundaryINExtractor, SlidingWindowINExtractor

public abstract class PureINExtractor
extends Object

Given a compact representation of a document, get its pure IN fragments

Author:

B. Piwowarski

Constructor Summary

PureINExtractor()

Method Summary

abstract Iterator<bpiwowar.maths.matrix.DoubleMatrix1D>	getIterator(CompactDocument document) Get an iterator for the document pure information need aspects
abstract Iterator<bpiwowar.maths.matrix.DoubleMatrix1D>	getIterator(CompactDocument document, Iterator<it.unimi.dsi.util.Interval> intervalIterator) Extract pure INs using an interval iterator
void	init(IndexConfiguration index, CompactDocumentStorage storage) Initialise the pure IN extractor
Iterable<bpiwowar.maths.matrix.DoubleMatrix1D>	vectors(CompactDocument document) Get the vectors for one document given its id
Iterable<bpiwowar.maths.matrix.DoubleMatrix1D>	vectors(CompactDocument document, it.unimi.dsi.util.Interval... interval)
Iterable<bpiwowar.maths.matrix.DoubleMatrix1D>	vectors(CompactDocument document, Iterator<it.unimi.dsi.util.Interval> intervalIterator) Get the vectors for one document and a term given its id

Methods inherited from class java.lang.Object

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

Constructor Detail

PureINExtractor

public PureINExtractor()

Method Detail

init

public void init(IndexConfiguration index,
                 CompactDocumentStorage storage)

Initialise the pure IN extractor

vectors

public final Iterable<bpiwowar.maths.matrix.DoubleMatrix1D> vectors(CompactDocument document)

Get the vectors for one document given its id

Parameters:

document - The document

Returns:

An iterable on the list of (non normalised) term vectors

Throws:

Exception - When an exception occurs

vectors

public final Iterable<bpiwowar.maths.matrix.DoubleMatrix1D> vectors(CompactDocument document,
                                                                    Iterator<it.unimi.dsi.util.Interval> intervalIterator)

Get the vectors for one document and a term given its id

Parameters:

document - The document

Returns:

An iterable on the list of (non normalised) term vectors

Throws:

Exception - When an exception occurs

getIterator

public abstract Iterator<bpiwowar.maths.matrix.DoubleMatrix1D> getIterator(CompactDocument document)

Get an iterator for the document pure information need aspects

Parameters:

document - The document from which we want the aspects

Returns:

an iterator over vectors in the index term space

getIterator

public abstract Iterator<bpiwowar.maths.matrix.DoubleMatrix1D> getIterator(CompactDocument document,
                                                                           Iterator<it.unimi.dsi.util.Interval> intervalIterator)

Extract pure INs using an interval iterator

vectors

public Iterable<bpiwowar.maths.matrix.DoubleMatrix1D> vectors(CompactDocument document,
                                                              it.unimi.dsi.util.Interval... interval)