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From Dawid Weiss <dawid.we...@gmail.com>
Subject Re: Using Solr's (Auto)suggest with plain lucene
Date Fri, 06 May 2011 14:01:15 GMT
FSTLookup is strictly prefix-based. JaspellLookup should handle the fuzzy
matching, but I know very little about it. The source code is your friend,
though -- just try what works and what doesn't.

Dawid

On Fri, May 6, 2011 at 3:21 PM, Clemens Wyss <clemensdev@mysign.ch> wrote:

> What if I'd like to add "fuzzy" lookup for terms?
>
> E.g.:
> "melo" should also bring up "merlot"
>
> > -----Ursprüngliche Nachricht-----
> > Von: Dawid Weiss [mailto:dawid.weiss@gmail.com]
> > Gesendet: Freitag, 6. Mai 2011 11:30
> > An: java-user@lucene.apache.org
> > Betreff: Re: Using Solr's (Auto)suggest with plain lucene
> >
> > So you'd like case-sensitive lookup, not case-insensitive lookup.
> FSTLookup
> > just takes characters from the input and does not perform any
> normalization.
> > So, if you feed it terms with casing, you'll get (cased) suggestions
> back.
> > If you need cased suggestions, but provide normalized (lowercased)
> prefixes
> > you'll get nothing, although such a feature would be relatively easy to
> > implement based on the automaton code currently in the SVN.
> >
> > Dawid
> >
> > On Fri, May 6, 2011 at 11:18 AM, Clemens Wyss <clemensdev@mysign.ch>
> > wrote:
> >
> > > Thx Dawid,
> > > Could you be more precise on 2. ? I'd like to leave the suggested
> > > terms untouched, i.e. cased.
> > >
> > > Clemens
> > >
> > > > -----Ursprüngliche Nachricht-----
> > > > Von: Dawid Weiss [mailto:dawid.weiss@gmail.com]
> > > > Gesendet: Freitag, 6. Mai 2011 11:12
> > > > An: java-user@lucene.apache.org
> > > > Betreff: Re: Using Solr's (Auto)suggest with plain lucene
> > > >
> > > > 1. FSTLookup is in the trunk only, it has not been released.
> > > > 2. Case-insensitive lookups are possible, you'd just need to pass
> > > normalized
> > > > tokens from which the dictionary is built and then use the same
> > > > normalization at the time you query for suggestions.
> > > > 3. "http://search-lucene.com/m/586gA4ccL11". I have no idea.
> > > >
> > > > Dawid
> > > >
> > > > On Fri, May 6, 2011 at 11:06 AM, Clemens Wyss
> > <clemensdev@mysign.ch>
> > > > wrote:
> > > >
> > > > > I have come across TSTLookup.
> > > > > In which jar Do I find FSTLookup? Does any of these lookup-classes
> > > > > allow case insensitive lookups? My terms are (unfortunately) cased.
> > > > >
> > > > > What Lookup "sits" behind this suggester
> > > > > http://search-lucene.com/m/586gA4ccL11
> > > > > here?
> > > > >
> > > > >
> > > > > > -----Ursprüngliche Nachricht-----
> > > > > > Von: Dawid Weiss [mailto:dawid.weiss@gmail.com]
> > > > > > Gesendet: Donnerstag, 5. Mai 2011 15:00
> > > > > > An: java-user@lucene.apache.org
> > > > > > Betreff: Re: Using Solr's (Auto)suggest with plain lucene
> > > > > >
> > > > > > If you check out the source code of solr/lucene, look at
> > > > > > FSTLookup class
> > > > > and
> > > > > > FSTLookupTest -- you can populate FSTLookup manually with terms/
> > > > > > phrases from your index and then use the resulting automaton
for
> > > > suggestions.
> > > > > >
> > > > > > Dawid
> > > > > >
> > > > > > On Thu, May 5, 2011 at 2:54 PM, Clemens Wyss
> > > > <clemensdev@mysign.ch>
> > > > > > wrote:
> > > > > >
> > > > > > > I have implemented my index (in fact it's a plugable indexing
> > > > > > > API) in "plain Lucene". It tried to implement a term
> > > > > > > suggestion mechanism on my own, being not to happy so far.
> > > > > > > At
> > > > > > > http://search-
> > > > > > lucene.com/m/0QBv41ssGlh/suggestion&subj=Auto+Suggest
> > > > > > > I have seen Solr's auto suggestion for search terms. Appart
> > > > > > > from not being "fuzzy" it looks quite promising.
> > > > > > >
> > > > > > > How easily can I Integrate Solr's suggestion with my Lucene
> index?
> > > > > > >
> > > > > > > Thx
> > > > > > > Clemens
> > > > > > >
> > > > > > > --------------------------------------------------------------
> > > > > > > ----
> > > > > > > --- To unsubscribe, e-mail:
> > > > > > > java-user-unsubscribe@lucene.apache.org
> > > > > > > For additional commands, e-mail:
> > > > > > > java-user-help@lucene.apache.org
> > > > > > >
> > > > > > >
> > > > >
> > >
>

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