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Posted to dev@lucene.apache.org by "Grant Ingersoll (JIRA)" <ji...@apache.org> on 2007/08/08 04:35:59 UTC

[jira] Created: (LUCENE-975) Position based TermVectorMapper

Position based TermVectorMapper
-------------------------------

                 Key: LUCENE-975
                 URL: https://issues.apache.org/jira/browse/LUCENE-975
             Project: Lucene - Java
          Issue Type: New Feature
          Components: Store
            Reporter: Grant Ingersoll
            Assignee: Grant Ingersoll
            Priority: Minor


As part of the new TermVectorMapper approach to TermVectors, the ensuing patch loads term vectors and stores the term info by position.  This should let people directly index into a term vector given a position.  Actually, it does it through Maps, b/c the array based bookkeeping is a pain given the way positions are stored.  

The map looks like:
Map<String,   Map<Integer, TVPositionInfo>>

where the String is the field name, the integer is the position, and TVPositionInfo is a storage mechanism for the terms and offsets that occur at a position.  It _should_ handle multiple terms per position (which is always my downfall! )

I have not tested performance of this approach.


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[jira] Updated: (LUCENE-975) Position based TermVectorMapper

Posted by "Grant Ingersoll (JIRA)" <ji...@apache.org>.
     [ https://issues.apache.org/jira/browse/LUCENE-975?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Grant Ingersoll updated LUCENE-975:
-----------------------------------

    Attachment: LUCENE-975.patch

First attempt at a position based TermVectorMapper.  I believe it is ready to go, but will let it sit for a few days.

> Position based TermVectorMapper
> -------------------------------
>
>                 Key: LUCENE-975
>                 URL: https://issues.apache.org/jira/browse/LUCENE-975
>             Project: Lucene - Java
>          Issue Type: New Feature
>          Components: Store
>            Reporter: Grant Ingersoll
>            Assignee: Grant Ingersoll
>            Priority: Minor
>         Attachments: LUCENE-975.patch
>
>
> As part of the new TermVectorMapper approach to TermVectors, the ensuing patch loads term vectors and stores the term info by position.  This should let people directly index into a term vector given a position.  Actually, it does it through Maps, b/c the array based bookkeeping is a pain given the way positions are stored.  
> The map looks like:
> Map<String,   Map<Integer, TVPositionInfo>>
> where the String is the field name, the integer is the position, and TVPositionInfo is a storage mechanism for the terms and offsets that occur at a position.  It _should_ handle multiple terms per position (which is always my downfall! )
> I have not tested performance of this approach.

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[jira] Resolved: (LUCENE-975) Position based TermVectorMapper

Posted by "Grant Ingersoll (JIRA)" <ji...@apache.org>.
     [ https://issues.apache.org/jira/browse/LUCENE-975?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Grant Ingersoll resolved LUCENE-975.
------------------------------------

       Resolution: Fixed
    Lucene Fields: [Patch Available]  (was: [Patch Available, New])

Committed: 565994

> Position based TermVectorMapper
> -------------------------------
>
>                 Key: LUCENE-975
>                 URL: https://issues.apache.org/jira/browse/LUCENE-975
>             Project: Lucene - Java
>          Issue Type: New Feature
>          Components: Store
>            Reporter: Grant Ingersoll
>            Assignee: Grant Ingersoll
>            Priority: Minor
>         Attachments: LUCENE-975.patch
>
>
> As part of the new TermVectorMapper approach to TermVectors, the ensuing patch loads term vectors and stores the term info by position.  This should let people directly index into a term vector given a position.  Actually, it does it through Maps, b/c the array based bookkeeping is a pain given the way positions are stored.  
> The map looks like:
> Map<String,   Map<Integer, TVPositionInfo>>
> where the String is the field name, the integer is the position, and TVPositionInfo is a storage mechanism for the terms and offsets that occur at a position.  It _should_ handle multiple terms per position (which is always my downfall! )
> I have not tested performance of this approach.

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