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From Stefan Matheis <matheis.ste...@gmail.com>
Subject Re: [Ext] Influence ranking based on document committed date
Date Wed, 17 Aug 2016 17:04:24 GMT
Erick already gave you the solution, additional to that there’s a wiki
page that might contain a few more things about relevancy:

https://wiki.apache.org/solr/SolrRelevancyFAQ#How_can_I_change_the_score_of_a_document_based_on_the_.2Avalue.2A_of_a_field_.28say.2C_.22popularity.22.29

-Stefan


On August 17, 2016 at 5:35:10 PM, Erick Erickson
(erickerickson@gmail.com) wrote:
> Try:
> recip(rord(creationDate),1,1000,1000)
>
> See:
> https://wiki.apache.org/solr/FunctionQuery
>
> You can play with the magic numbers to influence how this scales your docs.
>
> Best,
> Erick
>
> On Wed, Aug 17, 2016 at 7:11 AM, Jay Parashar wrote:
> > This is correct: " I index it and feed it the timestamp at index time".
> > You can sort desc on that field (can be a TrieDateField)
> >
> >
> > -----Original Message-----
> > From: Steven White [mailto:swhite4141@gmail.com]
> > Sent: Wednesday, August 17, 2016 9:01 AM
> > To: solr-user@lucene.apache.org
> > Subject: [Ext] Influence ranking based on document committed date
> >
> > Hi everyone
> >
> > Let's say I search for the word "Olympic" and I get a hit on 10 documents that have
similar
> content (let us assume the content is at least 80%
> > identical) how can I have Solr rank them so that the ones with most recently updated
doc
> gets ranked higher? Is this something I have to do at index time or search time?
> >
> > Is the trick to have a field that holds the committed timestamp and boost on that
field
> during search? If so, is this field something I can configure in Solr's schema.xml or
> must I index it and feed it the timestamp at index time? If I'm on the right track, does
this
> mean I have to always append this field base boost to each query a user issues?
> >
> > If there is a wiki or article written on this topic, that would be a good start.
> >
> > In case it matters, I'm using Solr 5.2 and my searches are utilizing edismax.
> >
> > Thanks in advanced!
> >
> > Steve
>

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