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Posted to dev@lucene.apache.org by "Arcadius Ahouansou (JIRA)" <ji...@apache.org> on 2015/12/17 17:47:46 UTC
[jira] [Updated] (LUCENE-6939) BlendedInfixSuggester to support
exponential reciprocal BlenderType
[ https://issues.apache.org/jira/browse/LUCENE-6939?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Arcadius Ahouansou updated LUCENE-6939:
---------------------------------------
Description:
The orignal BlendedInfixSuggester introduced in LUCENE-5354 has support for:
- {{BlenderType.POSITION_LINEAR}} and
- {{BlenderType.POSITION_RECIPROCAL}} .
These are used to score documents based on the position of the matched token i.e the closer is the matched term to the beginning, the higher score you get.
In some use cases, we need a more aggressive scoring based on the position.
That's where the exponential reciprocal comes into play
i.e
{{coef = 1/Math.pow(position+1, exponent)}}
where the {{exponent}} is a configurable variable.
was:
The orignal BlendedInfixSuggester introduced in LUCENE-5354 has support for:
- {{BlenderType.POSITION_LINEAR}} and
- {{BlenderType.POSITION_RECIPROCAL}} .
These are used to score documents based on the position of the matched token i.e the closer is the matched term to the beginning, the higher score you get.
In some use cases, we need a more aggressive scoring based on the position.
That's where the exponential reciprocal comes into play
i.e {{coef = 1/Math.pow(position+1, exponent) }}where the {{exponent}} is a configurable variable.
> BlendedInfixSuggester to support exponential reciprocal BlenderType
> -------------------------------------------------------------------
>
> Key: LUCENE-6939
> URL: https://issues.apache.org/jira/browse/LUCENE-6939
> Project: Lucene - Core
> Issue Type: Improvement
> Components: modules/spellchecker
> Affects Versions: 5.4
> Reporter: Arcadius Ahouansou
> Priority: Minor
> Labels: suggester
>
> The orignal BlendedInfixSuggester introduced in LUCENE-5354 has support for:
> - {{BlenderType.POSITION_LINEAR}} and
> - {{BlenderType.POSITION_RECIPROCAL}} .
> These are used to score documents based on the position of the matched token i.e the closer is the matched term to the beginning, the higher score you get.
> In some use cases, we need a more aggressive scoring based on the position.
> That's where the exponential reciprocal comes into play
> i.e
> {{coef = 1/Math.pow(position+1, exponent)}}
> where the {{exponent}} is a configurable variable.
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