org.terrier.applications

Class InvertedIndexRecompresser

java.lang.Object

org.terrier.applications.InvertedIndexRecompresser

public class InvertedIndexRecompresser
extends Object

NOTE: BE CAREFUL, THIS APPLICATION OVERWRITES THE INDEX!! This application recompress an inverted index using the specified compression configuration. Usage: InvertedIndexRecompresser The terrier.properties must contain the following properties: indexing.tmp-inverted.compression.configuration=IntegerCodecCompressionConfiguration e.g. indexing.tmp-inverted.compression.configuration=IntegerCodecCompressionConfiguration If you are targetting IntegerCodecCompressionConfiguration, you probably need the following properties: compression.integer.chunk.size=N compression.tmp-inverted.integer.ids.codec=the IntegerCodec to use to compress ids compression.tmp-inverted.integer.ids.codec=the IntegerCodec to use to compress tfs compression.tmp-inverted.integer.ids.codec=the IntegerCodec to use to compress fields (if any) compression.tmp-inverted.integer.ids.codec=the IntegerCodec to use to compress blocks (if any) For example: compression.tmp-inverted.integer.ids.codec=LemireFastPFORVBCodec compression.tmp-inverted.integer.tfs.codec=LemireFastPFORVBCodec compression.tmp-inverted.integer.fields.codec=LemireFastPFORVBCodec compression.tmp-inverted.integer.blocks.codec=LemireFastPFORVBCodec indexing.tmp-inverted.compression.configuration=IntegerCodecCompressionConfiguration compression.integer.chunk.size=1024 NOTE: BE CAREFUL, THIS APPLICATION OVERWRITES THE INDEX!!

Since:

4.0

Author:

Matteo Catena, Craig Macdonald

Constructor Summary

Constructors

Constructor and Description
InvertedIndexRecompresser()

Method Summary

Methods

Modifier and Type	Method and Description
static void	main(String[] args)
static void	recompressInverted(IndexOnDisk index)

Methods inherited from class java.lang.Object

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

Constructor Detail

InvertedIndexRecompresser

public InvertedIndexRecompresser()

Method Detail

recompressInverted

public static void recompressInverted(IndexOnDisk index)
                               throws Exception

Throws:

Exception

main

public static void main(String[] args)
                 throws Exception

Throws:

Exception