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From "Tom Burton-West (JIRA)" <j...@apache.org>
Subject [jira] Updated: (LUCENE-2393) Utility to output total term frequency and df from a lucene index
Date Wed, 12 May 2010 22:17:42 GMT

     [ https://issues.apache.org/jira/browse/LUCENE-2393?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Tom Burton-West updated LUCENE-2393:
------------------------------------

    Attachment:     (was: LUCENE-2393)

> Utility to output total term frequency and df from a lucene index
> -----------------------------------------------------------------
>
>                 Key: LUCENE-2393
>                 URL: https://issues.apache.org/jira/browse/LUCENE-2393
>             Project: Lucene - Java
>          Issue Type: New Feature
>          Components: contrib/*
>            Reporter: Tom Burton-West
>            Priority: Trivial
>         Attachments: LUCENE-2393.patch, LUCENE-2393.patch, LUCENE-2393.patch, LUCENE-2393.patch,
LUCENE-2393.patch, LUCENE-2393.patch, LUCENE-2393.patch
>
>
> This is a pair of command line utilities that provide information on the total number
of occurrences of a term in a Lucene index.  The first  takes a field name, term, and index
directory and outputs the document frequency for the term and the total number of occurrences
of the term in the index (i.e. the sum of the tf of the term for each document).   The second
reads the index to determine the top N most frequent terms (by document frequency) and then
outputs a list of those terms along with  the document frequency and the total number of occurrences
of the term. Both utilities are useful for estimating the size of the term's entry in the
*prx files and consequent Disk I/O demands. 

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