Index sorter
------------

                 Key: LUCENE-2482
                 URL: https://issues.apache.org/jira/browse/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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