Thank you, that is the best explanation I have ever heard. We should add to the Wiki (given that is is correct).
On 3/11/11 9:05 AM, "Tomás Fernández Löbbe" <tomasflo...@gmail.com> wrote: >AFAIK, the difference is that the phrase slop applies to the phrase >queries >generated automatically by dismax and applied to the fields in "pf". Query >Slop (qs) is the phrase slop applied to a phrase explicitly specified by >the >user, which will be applied to all the Query Fields (qf). > >An easy way to understand the phrase slop, is "the number of positions >that >you have to move a term to have the exact phrase". For example, If you >have >the query > >"A query" (a phrase query with slop = 0) > >and a document that says > >"a simple query" > >It won't match, but if you have the query: > >"A query"~1 (a phrase query with slop = 1) > >Then, the document will match the phrase query, even if is not exact. > >I hope I'm clear enough. > >Tomás > > >On Fri, Mar 11, 2011 at 12:41 PM, Bill Bell <billnb...@gmail.com> wrote: > >> What exactly is phrase and query slop? What technically is a slop? >> >> Bill Bell >> Sent from mobile >> >> >> On Mar 11, 2011, at 4:15 AM, Gastone Penzo <gastone.pe...@gmail.com> >> wrote: >> >> > ok thank you!!! >> > >> > 2011/3/10 Jonathan Rochkind <rochk...@jhu.edu> >> > >> >> On 3/10/2011 8:15 AM, Gastone Penzo wrote: >> >> >> >>> Thank you very much. i understand the difference beetween qs and ps >>but >> >>> not >> >>> what pf is...is it necessary to use ps? >> >>> >> >> >> >> It's not neccesary to use anything, including Solr. >> >> >> >> pf: Will take the entire query the user entered, make it into a >>single >> >> phrase, and boost documents within the already existing result set >>that >> >> match that phrase. pf does not change the result set, it just changes >> the >> >> ranking. >> >> ps: Will set phrase query slop on that pf query of the entire entered >> >> search string, that effects boosting. >> >> >> >> >> >> >> > >> > >> > -- >> > Gastone Penzo >>
