Hello Hourcade, Thanks for your response. Does that mean different values should be set to "index_analyzer" and "search_analyzer"? (e.g. "index_analyzer": "shingle", and "search_analyzer": "standard") What if I want to re-use the same "shingle" analyzer in both index and search? will the match_phrase "t1 t2 t3" still give me a match?
I know that set a different analyzer to "search_analyzer" makes match_phrase "t1 t2 t3" searchable, but if I do that, then I get no benefit from "shingle", right? Instead I get a bigger index size. I assume "shingle" is used for faster "match_phrase" searches. But after shingle, searching a phrase of 3 tokens "t1 t2 t3" becomes searching a phrase of 5 tokens plus I don't know how "shingle" arranges the positions for a correct phrase query. So how can "match_phrase" be faster? Thank you. Cédric Hourcade於 2014年6月20日星期五UTC+8下午4時18分03秒寫道： > > Hello, > > Let's say you have an indexed text "t1 t3 t3" with shingles. The token > positions are also indexed, so you get : t1 (at pos 1), "t1 t2" (pos > 1), t2 (pos 2), "t2 t3" (pos 2) and t3 (pos 3). > > So if you are searching with a match_phrase for "t1 t2 t3" (even if > not tokenized as shingles) it will matches the document, because t1, > t2 and t3 are considered next to each others (based on there recorded > position) for this document. > > Cédric Hourcade > c...@wal.fr <javascript:> > > > On Fri, Jun 20, 2014 at 7:04 AM, 陳智清 <walke...@gmail.com <javascript:>> > wrote: > > How does shingle filter work on match_phrase in query phase? > > > > After analyzing phrase "t1 t2 t3", shingle filter produced five tokens, > > t1 > > t2 > > t3 > > "t1 t2" > > "t2 t3" > > > > Will match_phrase still give "t1 t2 t3" a match? How it works? Thank > you. > > > > -- > > You received this message because you are subscribed to the Google > Groups > > "elasticsearch" group. > > To unsubscribe from this group and stop receiving emails from it, send > an > > email to elasticsearc...@googlegroups.com <javascript:>. > > To view this discussion on the web visit > > > https://groups.google.com/d/msgid/elasticsearch/33889bbd-9b01-4414-b579-4e625f0eec17%40googlegroups.com. > > > > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "elasticsearch" group. To unsubscribe from this group and stop receiving emails from it, send an email to elasticsearch+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/elasticsearch/602477cb-d8f4-459b-8888-e6174662fbfd%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
