Hi Anh The two links Michael shared relate to questions I asked when I was trying to get synonym matching with our application.
I really do have multi-term synonym matching working at this point; there's always scope for improvement of course but with the hints suppled in those threads I was able to index our documents and search them using a variety of synonymous terms, both single words and phrases. Our application does not use either BooleanQuery or SynonymQuery; I have just used the standard QueryParser. Instead the synonym processing occurs in the indexing phase, which is not only simpler (one search pattern, one query), but also I think you would also find it gives you superior performance (because the synonym processing occurs once at indexing time and not at all during searching - and I'm sure you'll be doing far more searching than indexing). cheers T -----Original Message----- From: Michael Wechner <michael.wech...@wyona.com> Sent: Thursday, 29 December 2022 08:56 To: java-user@lucene.apache.org Subject: Re: Question for SynonymQuery Hi Anh The following Stackoverflow link might help https://stackoverflow.com/questions/73240494/can-someone-assist-me-with-a-multi-word-synonym-problem-in-lucene The following thread seems to confirm, that escaping the space with a backslash does not help https://lists.apache.org/list?java-user@lucene.apache.org:2022-3 HTH Michael Am 27.12.22 um 20:22 schrieb Anh Dũng Bùi: > Hi Lucene users, > > I recently came across SynonymQuery and found out that it only > supports single-term synonyms (since it accepts a list of Term which > will be considered as synonyms). We have some multi-term synonyms like > "internet device" <-> "wifi router" or "dns" <-> "domain name > service". Am I right that I need to use something like a BooleanQuery for > these cases? > > I have 2 other follow-up questions: > - Does SynonymQuery have any advantage over BooleanQuery? Or is it > only different in how scores are computed? As I understand > SynonymWeight will consider all terms as exactly the same while > BooleanQuery will favor the documents with more matched terms. > - Is it worth it to support multi-term synonyms in SynonymQuery? My > feeling is that it's better to just use BooleanQuery in those cases, > since to support multi-term synonyms it needs to accept a list of > Query, which would make it behave like a BooleanQuery. Also how > scoring works with multi-term is another problem. > > Thanks & Regards! > --------------------------------------------------------------------- To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org For additional commands, e-mail: java-user-h...@lucene.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org For additional commands, e-mail: java-user-h...@lucene.apache.org
