[#LUCENE-496] New tool for reseting the (length)norm of fields after changing Similarity

Lucene - Java

New tool for reseting the (length)norm of fields after changing Similarity

Created: 15/Feb/06 11:21 AM Updated: 27/May/06 01:33 AM

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Component/s:

Index

Affects Version/s:

None

Fix Version/s:

2.0.0

Time Tracking:

Not Specified

File Attachments:

File Name	Date Attached	Attached By	Size
LengthNormModifier.java	2006-02-15 11:24 AM	Hoss Man	4 kB
TestLengthNormModifier.java	2006-02-15 11:24 AM	Hoss Man	5 kB

Resolution Date:

26/May/06 01:50 AM

Description

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I've written a little tool that seems like it can/will be very handy as I tweak my custom similarity. I think it would make a good addition to contrib/miscellaneous.

Class and Tests to be attached shortly...

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Hoss Man added a comment - 15/Feb/06 11:24 AM

Class with utility function, and main that calls it on an FSDirectory. Also test cases for the utility function using a RAMDirectory

Hoss Man made changes - 15/Feb/06 11:24 AM

Field	Original Value	New Value
Attachment		LengthNormModifier.java [ 12322977 ]
Attachment		TestLengthNormModifier.java [ 12322978 ]

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Yonik Seeley added a comment - 15/Feb/06 02:02 PM

Looks good! Should this be in the index package?

You could even optionally reconstruct the boost if you wanted to (to the precision allowed by the 8 bit float at least) by using the original Similarity to calculate what the lengthNorm is alone, and comparing against the actual norm.

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Hoss Man added a comment - 20/Apr/06 01:23 AM

FYI: I picked the package to match the other classes in contrib/miscellaneous ... I don't think it matters very much what package it lives in.

As for reconstructing the boost: It's possible, but this met my needs and I've got some bigger things to worry about at the moment.

Repository	Revision	Date	User	Message
ASF	#409428	Thu May 25 18:49:04 UTC 2006	hossman	~~LUCENE-496~~ - Command line tool for modifying the field norms of an existing index
				Files Changed
				ADD /lucene/java/trunk/contrib/miscellaneous/src/test/org/apache/lucene/misc/TestLengthNormModifier.java MODIFY /lucene/java/trunk/CHANGES.txt ADD /lucene/java/trunk/contrib/miscellaneous/src/java/org/apache/lucene/misc/LengthNormModifier.java

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Hoss Man added a comment - 26/May/06 01:50 AM

Commited with some small documentation additions.

Hoss Man made changes - 26/May/06 01:50 AM

Fix Version/s		2.0 [ 12310853 ]
Resolution		Fixed [ 1 ]
Assignee		Hoss Man [ hossman ]
Status	Open [ 1 ]	Resolved [ 5 ]

Doug Cutting made changes - 27/May/06 01:33 AM

Status

Resolved [ 5 ]

Closed [ 6 ]