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https://issues.apache.org/jira/browse/SOLR-2378?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13016372#comment-13016372
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Dawid Weiss commented on SOLR-2378:
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I've been waiting for somebody to look at this patch, guys, just to confirm
that everything is fine with it. If so, I'd like to commit it in and move on to
infix suggestions support maybe.
> FST-based Lookup (suggestions) for prefix matches.
> --------------------------------------------------
>
> Key: SOLR-2378
> URL: https://issues.apache.org/jira/browse/SOLR-2378
> Project: Solr
> Issue Type: New Feature
> Components: spellchecker
> Reporter: Dawid Weiss
> Assignee: Dawid Weiss
> Labels: lookup, prefix
> Fix For: 4.0
>
> Attachments: SOLR-2378.patch
>
>
> Implement a subclass of Lookup based on finite state automata/ transducers
> (Lucene FST package). This issue is for implementing a relatively basic
> prefix matcher, we will handle infixes and other types of input matches
> gradually. Impl. phases:
> - -write a DFA based suggester effectively identical to ternary tree based
> solution right now,-
> - -baseline benchmark against tern. tree (memory consumption, rebuilding
> speed, indexing speed; reuse Andrzej's benchmark code)-
> - -modify DFA to encode term weights directly in the automaton (optimize for
> onlyMostPopular case)-
> - -benchmark again-
> - add infix suggestion support with prefix matches boosted higher (?)
> - benchmark again
> - modify the tutorial on the wiki [http://wiki.apache.org/solr/Suggester]
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