mmmm is the readability that is stopping you to use the bq parameter with
all your roles ?
A custom function is off course a way, but why you think is going to
satisfy better your requirement in comparison with the bq ?
Cheers
On 13 November 2015 at 18:41, Andrea Open Source <
andrearoggerone.o...@gmail.com> wrote:
> Hi Alessandro,
> Thanks for answering. Unfortunately bq is not enough as I have several
> roles that I need to score in different ways. I was thinking of building a
> custom function that reads the weights of the roles from solr config and
> applies them at runtime. I am a bit concerned about performance though and
> that's the reason behind my question. What's your thought about such
> solution?
>
> King Regards,
> Andrea Roggerone
>
> > On 09/nov/2015, at 12:29, Alessandro Benedetti <abenede...@apache.org>
> wrote:
> >
> > ehehe your request is kinda delicate :
> > 1) I can't store the
> > payload at index time
> > 2) Passing all the weights at query time is not an option
> >
> > So you seem to exclude all the possible solutions ...
> > Anyway, just thinking loud, have you tried the edismax query parser and
> the
> > boost query feature?
> >
> > 1) the first strategy is the one you would prefer to avoid :
> > you define the AuthorRole, then you use the Boost Query parameter to
> boost
> > differently your roles :
> > AuthorRole:"ADMIN"^100 AuthorRole:"ARCHITECT"^50 ect ...
> > If you have 20 roles , the query could be not readable.
> >
> > 2) you index the "weight" for the role in the original document.
> > The you use a Boost Function according to your requirement ( using there
> > "weight" field)
> >
> > Hope this helps,
> >
> > Cheers
> >
> > e.g. from the Solr wiki
> > The bq (Boost Query) Parameter
> >
> > The bq parameter specifies an additional, optional, query clause that
> will
> > be added to the user's main query to influence the score. For example, if
> > you wanted to add a relevancy boost for recent documents:
> > q=cheese
> > bq=date:[NOW/DAY-1YEAR TO NOW/DAY]
> >
> > You can specify multiple bq parameters. If you want your query to be
> parsed
> > as separate clauses with separate boosts, use multiple bq parameters.
> > The bf (Boost Functions) Parameter
> >
> > The bf parameter specifies functions (with optional boosts) that will be
> > used to construct FunctionQueries which will be added to the user's main
> > query as optional clauses that will influence the score. Any function
> > supported natively by Solr can be used, along with a boost value. For
> > example:
> > recip(rord(myfield),1,2,3)^1.5
> >
> > Specifying functions with the bf parameter is essentially just shorthand
> > for using the bq param combined with the {!func} parser.
> >
> > For example, if you want to show the most recent documents first, you
> could
> > use either of the following:
> > bf=recip(rord(creationDate),1,1000,1000)
> > ...or...
> > bq={!func}recip(rord(creationDate),1,1000,1000)
> >
> > On 6 November 2015 at 16:44, Andrea Roggerone <
> > andrearoggerone.o...@gmail.com> wrote:
> >
> >> Hi all,
> >> I am working on a mechanism that applies additional boosts to documents
> >> according to the role covered by the author. For instance we have
> >>
> >> CEO|5 Architect|3 Developer|1 TeamLeader|2
> >>
> >> keeping in mind that an author could cover multiple roles (e.g. for a
> >> design document, a Team Leader could be also a Developer).
> >>
> >> I am aware that is possible to implement a function that leverages
> >> payloads, however the weights need to be configurable so I can't store
> the
> >> payload at index time.
> >> Passing all the weights at query time is not an option as we have more
> than
> >> 20 roles and query readability and performance would be heavily
> affected.
> >>
> >> Do we have any "out of the box mechanism" in Solr to implement the
> >> described behavior? If not, what other options do we have?
> >
> >
> >
> > --
> > --------------------------
> >
> > Benedetti Alessandro
> > Visiting card : http://about.me/alessandro_benedetti
> >
> > "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
>
--
--------------------------
Benedetti Alessandro
Visiting card : http://about.me/alessandro_benedetti
"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
