There are some interactions with range query caching (true by default) and some internal limits, and some fixes we made that made the information in the tables incorrect. There are some further fixes/changes coming in 8.0-4 in this area., too. In the meantime you can adjust your slope factor to get the effect you want.
//Mary On Fri, 30 Oct 2015 06:13:30 -0700, Chris Rimmer <[email protected]> wrote: > Hi, > > As mentioned in my previous mail, we are running MarkLogic 8.0-3 and > using > the "additional query" technique to influence the ordering of search > results (as discussed here http://markmail.org/message/cmxhjxd77clicsbz). > We have found something else that is not working as we would expect with > range queries, this time it is slope factor with date values. The > documentation here: > https://docs.marklogic.com/guide/search-dev/relevance#id_32386 suggests > that with the default slope factor of 1.0 the granularity of date values > should be roughly 1.5 days. We understand that to mean that with dates > which are 2 or more days apart, they should fall into different buckets > and > so contribute different amounts to the search score. But we are not > seeing > that. > > As as an example, given an empty database with an element range index set > up on the element "birth" as follows: > > import module namespace admin = "http://marklogic.com/xdmp/admin"; at > "/MarkLogic/admin.xqy"; > > let $dbid := xdmp:database("Documents") > let $config := admin:get-configuration() > let $rangespec := admin:database-range-element-index("date", "", > "birth", > "", fn:false() ) > let $new-config := admin:database-add-range-element-index($config, > $dbid, > $rangespec) > return admin:save-configuration($new-config) > > Then with the following documents inserted: > > let $step := 3 > let $start := xs:date("2000-01-01") > > let $_ := xdmp:document-insert("/deb", > <person><role>Bloo</role><birth>{$start + 3 * $step * > xs:dayTimeDuration('P1D')}</birth></person>) > let $_ := xdmp:document-insert("/eve", > <person><role>Bloo</role><birth>{$start + 2 * $step * > xs:dayTimeDuration('P1D')}</birth></person>) > let $_ := xdmp:document-insert("/flo", > <person><role>Bloo</role><birth>{$start + 1 * $step * > xs:dayTimeDuration('P1D')}</birth></person>) > return () > > The following query returns all 3 documents with the same score: > > import module namespace search = > "http://marklogic.com/appservices/search"; > at "/MarkLogic/appservices/search/search.xqy"; > > let $or-query := cts:or-query(( > cts:and-query(()), > cts:element-range-query(xs:QName("birth"), ">", > xs:date("2000-01-01"), ("score-function=linear", "slope-factor=1.0")) > )) > > let $options := <options > xmlns="http://marklogic.com/appservices/search";> > <additional-query>{$or-query}</additional-query> > </options> > > let $search := search:search("Bloo", $options) > > return for $result in $search//search:result > return $result/@uri || ": " || $result/@score > > In fact, the step needs to be increased to 4 days in order for one of > them > to have a different score and to 8 for them to get distinct scores. Once > again, if anyone can explain why this is not working as we expect it > would > be very helpful, > > Thanks > > Chris Rimmer > > 67 Bricks -- Using Opera's revolutionary email client: http://www.opera.com/mail/ _______________________________________________ General mailing list [email protected] Manage your subscription at: http://developer.marklogic.com/mailman/listinfo/general
