That's right. And just be aware of the tradeoffs you're making so you make an informed decision.
Mike McCandless http://blog.mikemccandless.com On Mon, Feb 13, 2017 at 6:19 PM, Corbin, J.D. <jd.cor...@pearson.com> wrote: > Hi Mike, > > Thanks for the response, > > Sounds like I was using it incorrectly by specifying the SynonymGraphFilter > at query time AND SynonymGraphFilter followed by FlattenGraphFilter at index > time. > > I need to specify one or the other. > > J.D. > > J.D. Corbin > > Senior Research Engineer > > Advanced Computing & Data Science Lab > > > 3075 W. Ray Road > Suite 200 > Chandler, AZ 85226-2495 > USA > > > M: (303) 912-0958 > > E: jd.cor...@pearson.com > > > Pearson > > Always Learning > > Learn more at www.pearson.com > > On Mon, Feb 13, 2017 at 3:32 PM, Michael McCandless > <luc...@mikemccandless.com> wrote: >> >> Hi J.D., >> >> First you need to decide if it's OK to do all your syns at search >> time. It results in slower queries, and different scoring, yet >> correct multi-token results, vs. index time. >> >> If that is OK, then you should not use any syn filter at index time, >> and use only SynonymGraphFilter at search time. >> >> If it is not OK, then you should use SynonymGraphFilter followed by >> FlattenGraphFilter at index time, and no syn filter at search time. >> >> Mike McCandless >> >> http://blog.mikemccandless.com >> >> >> On Mon, Feb 13, 2017 at 3:19 PM, Corbin, J.D. <jd.cor...@pearson.com> >> wrote: >> > Hi, >> > >> > I am looking for some guidance on the proper use of the >> > SynonymGraphFilter >> > in Lucene (6.4.1). >> > >> > Below is how I am implementing the analyzers for the index and query >> > sides. >> > I don't see a lot of examples on the proper usage of the >> > SynonymGraphFilter >> > so was hoping that someone (Michael McCandless?) might be able to shed >> > some >> > like on how to use this filter, both on the index and query side. >> > >> > I have defined a custom analyzer that I specify at index time, it >> > contains >> > among other things, the following code block in the createComponents(): >> > >> > Note: getSynonyms() loads from Wordnet data >> > >> > SynonymMap synonyms = getSynonyms(); >> > >> > if (synonyms != null) { >> > >> > result = new SynonymGraphFilter(result, synonyms, true); >> > >> > result = new FlattenGraphFilter(result); // is this >> > required when indexing? >> > >> > } >> > >> > >> > ... and on the query side, my analyzer (createComponents), includes the >> > following: >> > >> > >> > SynonymMap synonyms = getSynonyms(); >> > >> > if (synonyms != null) >> > >> > { >> > >> > result = new SynonymGraphFilter(result, synonyms, true); >> > >> > // note: not flattening on the query side... is this correct >> > or >> > should I flatten on both sides (e.g., use same analyzer for both index >> > and >> > query) >> > >> > } >> > >> > >> > J.D. Corbin > > --------------------------------------------------------------------- To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org For additional commands, e-mail: java-user-h...@lucene.apache.org
