lucene-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Robert Muir (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (LUCENE-3714) add suggester that uses shortest path/wFST instead of buckets
Date Sun, 19 Feb 2012 16:42:40 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-3714?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13211405#comment-13211405
] 

Robert Muir commented on LUCENE-3714:
-------------------------------------

Committed to trunk: working on the backport now.

I'm gonna measure any perf difference from the pollFirst/pollLast stuff... if there is a slowdown
we can deal with that on a separate issue (maybe there is some way to prevent a slowdown,
at least
if java 6 is actually whats being used)... but maybe it doesn't affect overall suggest speed
anyway.
                
> add suggester that uses shortest path/wFST instead of buckets
> -------------------------------------------------------------
>
>                 Key: LUCENE-3714
>                 URL: https://issues.apache.org/jira/browse/LUCENE-3714
>             Project: Lucene - Java
>          Issue Type: New Feature
>          Components: modules/spellchecker
>            Reporter: Robert Muir
>         Attachments: LUCENE-3714.patch, LUCENE-3714.patch, LUCENE-3714.patch, LUCENE-3714.patch,
LUCENE-3714.patch, LUCENE-3714.patch, TestMe.java, out.png
>
>
> Currently the FST suggester (really an FSA) quantizes weights into buckets (e.g. single
byte) and puts them in front of the word.
> This makes it fast, but you lose granularity in your suggestions.
> Lately the question was raised, if you build lucene's FST with positiveintoutputs, does
it behave the same as a tropical semiring wFST?
> In other words, after completing the word, we instead traverse min(output) at each node
to find the 'shortest path' to the 
> best suggestion (with the highest score).
> This means we wouldnt need to quantize weights at all and it might make some operations
(e.g. adding fuzzy matching etc) a lot easier.

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira

        

---------------------------------------------------------------------
To unsubscribe, e-mail: dev-unsubscribe@lucene.apache.org
For additional commands, e-mail: dev-help@lucene.apache.org


Mime
View raw message