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From "Andrzej Bialecki (JIRA)" <>
Subject [jira] Created: (LUCENE-2482) Index sorter
Date Thu, 27 May 2010 19:17:37 GMT
Index sorter

                 Key: LUCENE-2482
             Project: Lucene - Java
          Issue Type: New Feature
          Components: contrib/*
    Affects Versions: 3.1
            Reporter: Andrzej Bialecki 
             Fix For: 3.1
         Attachments: indexSorter.patch

A tool to sort index according to a float document weight. Documents with high weight are
given low document numbers, which means that they will be first evaluated. When using a strategy
of "early termination" of queries (see TimeLimitedCollector) such sorting significantly improves
the quality of partial results.

(Originally this tool was created by Doug Cutting in Nutch, and used norms as document weights
- thus the ordering was limited by the limited resolution of norms. This is a pure Lucene
version of the tool, and it uses arbitrary floats from a specified stored field).

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