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From "Ning Li (JIRA)" <j...@apache.org>
Subject [jira] Created: (LUCENE-1541) Trie range - make trie range indexing more flexible
Date Tue, 17 Feb 2009 19:16:59 GMT
Trie range - make trie range indexing more flexible
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                 Key: LUCENE-1541
                 URL: https://issues.apache.org/jira/browse/LUCENE-1541
             Project: Lucene - Java
          Issue Type: Improvement
          Components: contrib/*
            Reporter: Ning Li
            Priority: Minor


In the current trie range implementation, a single precision step is specified. With a large
precision step (say 8), a value is indexed in fewer terms (8) but the number of terms for
a range can be large. With a small precision step (say 2), the number of terms for a range
is smaller but a value is indexed in more terms (32).

We want to add an option that different precision steps can be set for different precisions.
An expert can use this option to keep the number of terms for a range small and at the same
time index a value in a small number of terms. See the discussion in LUCENE-1470 that results
in this issue.

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