I have submitted a patch to make the query generated for overlapping query terms somewhat configurable (w/ default being SynonymQuery), based on practices I've seen in the field. I'd love to hear feedback
https://issues.apache.org/jira/browse/SOLR-11662 On Tue, Nov 21, 2017 at 12:37 PM Doug Turnbull < dturnb...@opensourceconnections.com> wrote: > We help clients that perform index-time semantic expansion to hypernyms at > index time. For example, they will have a synonyms file that does the > following > > wing_tips => wing_tips, dress_shoes, shoes > dress_shoes => dress_shoes, shoes > oxfords => oxfords, dress_shoes, shoes > > Then at query time, we rely on differing IDF of these terms in the same > position to bring up the rare, specific terms matches, followed by > increasingly semantically broad matches. For example, Previously, a search > for wing_tips would get turned into "wing_tips OR dress_shoes OR shoes". > Shoes being very common would get scored lowest. Wing tips being very > specific would get scored very highly > > ( I have a blog post about this (which uses Elasticsearch) > > http://opensourceconnections.com/blog/2016/12/23/elasticsearch-synonyms-patterns-taxonomies/ > ) > > As our clients upgrade to Solr 6 and above, we're noticing our technique > no longer works due to SynonymQuery, which blends the doc freq at query > time of synonyms at query time. SynonymQuery seems to be the right > direction for most people :) Still I would like to figure out how/if > there's a setting anywhere to return to the legacy behavior (a boolean > query of term queries) so I don't have to go back to the drawing board for > clients that rely on this technique. > > I've been going through QueryBuilder and I don't see where we could go > back to the legacy behavior. It seems to be based on position overlap. > > Thanks! > -Doug > > > > -- > Consultant, OpenSource Connections. Contact info at > http://o19s.com/about-us/doug-turnbull/; Free/Busy ( > http://bit.ly/dougs_cal) > -- Consultant, OpenSource Connections. Contact info at http://o19s.com/about-us/doug-turnbull/; Free/Busy (http://bit.ly/dougs_cal)
