Yes i saw it. But it allows me to give a different ranking (and a different order) for the top N documents that match a search.
We would like to give documents an order in absence of a query. to be more precise if do something like /solr/collection_1/select/?q=*.* i normally wouldn’t get a score. Using my (hopefully) custom score i would be able to give documents a “value” or “score” (based on factors that are outside search terms). For example with a /solr/collection_1/select/?q=*.* first documents could be the ones a user viewed most and that contains a certain quantity of information(so not strictly related to a search) My strategy must be applied to all documents (and not the first one matched by a query and re-ranked) > Il giorno 9 mag 2019, alle ore 17:40, Diego Ceccarelli (BLOOMBERG/ LONDON) > <dceccarel...@bloomberg.net> ha scritto: > > Have you seen the rerank plugin [1] ? maybe you could apply your custom > scoring function only to the top documents? > > [1] > https://lucene.apache.org/solr/6_6_0//solr-core/org/apache/solr/search/ReRankQParserPlugin.html > > From: java-user@lucene.apache.org At: 05/09/19 16:24:07To: > java-user@lucene.apache.org > Subject: Re: About custom score using Solr8/Lucene8 > > Diego it could be a nice workaround in case i was not able to perform custom > scoring (or in case custom scoring function would generate a slow query) > Thanks > > I still hope i will be able to implement a custom score function in some way > > I was almost able to achieve such result with ValueSourceParser but i’m not > sure is the best practice > >> Il giorno 9 mag 2019, alle ore 16:02, Alessandro Benedetti > <benedetti.ale...@gmail.com> ha scritto: >> >> What about external fields? >> > https://lucene.apache.org/solr/guide/6_6/working-with-external-files-and-process > es.html >> I admit I have not read in details all the thread, but from a superficial >> reading, it could help. >> Apologies if it's not helpful enough! >> >> Cheers >> >> >> On Thu, May 9, 2019 at 12:57 PM Federico Pici <akira...@libero.it.invalid> >> wrote: >> >>> Yes this was an option, and it solves a part of the problem. >>> >>> But let’s consider this use case: >>> >>> for each user index we need to calculate some important informations based >>> on the most relevant terms, the “starred” documents, the number of times >>> the were opened by user (and other key factors based on documents usage). >>> So, maybe weekly, we should update this “global” factors that would affect >>> each user’s document score. If this week i opened, for example, more >>> documents of typeA and less of typeB, ALL documents of typeA would be more >>> important >>> of all documents of typeB (this is just a strategy). So each time i >>> recalculate “global” importance key factors i would need to update every >>> user’s document to change its score. >>> >>> In this case i would fear scaling up, because as users grow up (and as >>> each user’s document number grow up) i would been updating more and more >>> document. >>> >>> That’s why i would like to separate this moments. I would calculate >>> “global” key factors in a separate process, but i would like to use them at >>> query time to generate different scoring strate >>> >>> >>> >>> >>>> Il giorno 9 mag 2019, alle ore 13:29, Diego Ceccarelli (BLOOMBERG/ >>> LONDON) <dceccarel...@bloomberg.net> ha scritto: >>>> >>>> why would you need to reindex all the users documents everynight? is the >>> score affected by the number of documents per user? >>>> >>>> Also for scores, you might be able to use in-place updates: >>>> >>>> >>> > https://lucene.apache.org/solr/guide/6_6/updating-parts-of-documents.html#Updati > ngPartsofDocuments-In-PlaceUpdates >>>> >>>> so no need to reindex all the document. >>>> >>>> >>>> From: java-user@lucene.apache.org At: 05/09/19 11:07:37To: Diego >>> Ceccarelli (BLOOMBERG/ LONDON ) , java-user@lucene.apache.org >>>> Subject: Re: About custom score using Solr8/Lucene8 >>>> >>>> Well, >>>> >>>> my index is basically a list of documents of users. so i could say i got >>> a >>>> couple of millions of documents per user. >>>> >>>> I need to produce a score that is unrelated with search term (something >>> like >>>> “give me documents that are the most important to user”). I would >>>> search for documents of a user without specifying a particular term. >>> Documents >>>> that are the most important for a user are calculated with strategy >>> based >>>> on particular text analysis (we still do not have a strategy). >>>> >>>> I evaluated the idea of storing a score for each document based on an >>> external >>>> scoring strategy (a job that reindex each user’s document every night?), >>> but >>>> i do not know how could scale up (more user with many documents could >>> make this >>>> strategy problematic in the long time), so the idea was to be able >>>> to calculate this scoring (or other scoring strategy) trying to follow >>> some >>>> best-practice (and as i can see using CustomScoreQuery is the most >>> preferred >>>> way) >>>> >>>> I was not able to try a solution because of Lucene8 missing >>> CustomScoreQuery. >>>> I made something very basic using ValueSourceParser (but is this a good >>>> practice?) >>>> >>>> >>>>> Il giorno 9 mag 2019, alle ore 10:50, Diego Ceccarelli (BLOOMBERG/ >>> LONDON) >>>> <dceccarel...@bloomberg.net> ha scritto: >>>>> >>>>> Hi Federico, >>>>> >>>>> Could you give more details on what is the score that you want to >>> produce? >>>> how big is the collection? >>>>> Is the score affected by the query? if not, would be possible to store >>> the >>>> score with the document? >>>>> >>>>> Cheers, >>>>> Diego >>>>> >>>>> From: java-user@lucene.apache.org At: 05/09/19 08:13:35To: >>>> java-user@lucene.apache.org >>>>> Subject: Re: About custom score using Solr8/Lucene8 >>>>> >>>>> Hello Mikhail, >>>>> yes i did. I read all the page at >>>>> https://issues.apache.org/jira/browse/LUCENE-8099 >>>>> <https://issues.apache.org/jira/browse/LUCENE-8099> >>>>> >>>>> I still do not understand where/how to start to write a class to be >>> embedded >>>> in >>>>> solr8. All >>>>> available example since 2012 where written around >>>>> CustomScoreQuery/CustomScoreProvider. >>>>> >>>>> I really don’t know how to setup a minimal project to implement custom >>>> scoring >>>>> in solr8/lucene8 using FunctionScoreQuery >>>>> >>>>>> Il giorno 8 mag 2019, alle ore 22:15, Mikhail Khludnev < >>> m...@apache.org> ha >>>>> scritto: >>>>>> >>>>>> Hello. >>>>>> >>>>>> Have you checked the fourth item at >>>>>> http://lucene.apache.org/core/8_0_0/MIGRATE.html ? >>>>>> >>>>>> On Wed, May 8, 2019 at 5:46 PM Federico Pici >>> <akira...@libero.it.invalid> >>>>>> wrote: >>>>>> >>>>>>> Hi, >>>>>>> >>>>>>> i was trying to implement custom score inside my solr8 instance. >>>>>>> On google i found some examples, all focused on using >>> CustomScoreProvider >>>>>>> and CustomScoreQuery classes. This classes have been removed in >>>>>>> Solr8/Lucene8 >>>>>>> and, from Lucene 8 changeling, i saw a developer /contributor saying >>> to >>>>>>> use FunctionScoreQuery. >>>>>>> >>>>>>> Googling around was unsuccessful as i found no example, so i have no >>> clue >>>>>>> from where to start from >>>>>>> >>>>>>> I think i have a very basic need. Generate a score from field in >>>>>>> documents using logic completely unrelated with query itself. >>>>>>> >>>>>>> The only way available (until any clue…) is using >>>>>>> org.apache.solr.search.ValueSourceParser >>>>>>> >>>>>>> >>>>>>> Is there any example, at least to understand how to start a minimal >>> basic >>>>>>> project? >>>>>>> >>>>>>> Thanks >>>>>>> --------------------------------------------------------------------- >>>>>>> To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org >>>>>>> For additional commands, e-mail: java-user-h...@lucene.apache.org >>>>>>> >>>>>>> >>>>>> >>>>>> -- >>>>>> Sincerely yours >>>>>> Mikhail Khludnev >>>>> >>>>> >>>> >>>> >>>> --------------------------------------------------------------------- >>>> 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 >>> >>> >> >> -- >> -------------------------- >> >> Benedetti Alessandro >> Visiting card - http://about.me/alessandro_benedetti >> Blog - http://alexbenedetti.blogspot.co.uk >> >> "Tyger, tyger burning bright >> In the forests of the night, >> What immortal hand or eye >> Could frame thy fearful symmetry?" >> >> William Blake - Songs of Experience -1794 England > > > --------------------------------------------------------------------- > 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
