With a time stamp you can use a function query to boost the score of newer documents: http://wiki.apache.org/solr/SolrRelevancyFAQ#head-b1b1cdedcb9cd9bfd9c994709b4d7e540359b1fd
Bill On Thu, Jul 9, 2009 at 5:58 PM, vivek sar <vivex...@gmail.com> wrote: > How do we sort by internal doc id (say on one index only) using Solr? > I saw couple of threads saying it (Sort.INDEXORDER) was not supported > in Solr, > > > http://www.nabble.com/sort-by-index-id-descending--td16124009.html#a16124009 > > http://www.nabble.com/Reverse-sorting-by-index-order-td1321032.html#a1321032 > > Has the index order support been added in Solr 1.4? How do we use that > - any documentation? > > Thanks, > -vivek > > On Thu, Jul 9, 2009 at 2:21 PM, Otis > Gospodnetic<otis_gospodne...@yahoo.com> wrote: > > > > Ah, with multiple indices you can't rely on the max Lucene doc Id. I > think you have to do with the timestamp approach. > > > > Otis > > -- > > Sematext -- http://sematext.com/ -- Lucene - Solr - Nutch > > > > > > > > ----- Original Message ---- > >> From: vivek sar <vivex...@gmail.com> > >> To: solr-user@lucene.apache.org > >> Sent: Thursday, July 9, 2009 1:13:54 PM > >> Subject: Re: Boosting for most recent documents > >> > >> Thanks Otis. I got a distributed index - using Solr multi-core. > >> Basically, I got 6 indexer instances running on 3 different boxes. > >> Couple of questions, > >> > >> 1) Is it possible to sort on document id for multiple-shards? How is > that done? > >> 2) How would boost by most recent doc at index time? > >> > >> Thanks, > >> -vivek > >> > >> > >> > >> On Wed, Jul 8, 2009 at 7:47 PM, Otis > >> Gospodneticwrote: > >> > > >> > Sort by the internal Lucene document ID and pick the highest one. > That might > >> do the job for you. > >> > > >> > Otis > >> > -- > >> > Sematext -- http://sematext.com/ -- Lucene - Solr - Nutch > >> > > >> > > >> > > >> > ----- Original Message ---- > >> >> From: vivek sar > >> >> To: solr-user > >> >> Sent: Wednesday, July 8, 2009 8:34:16 PM > >> >> Subject: Boosting for most recent documents > >> >> > >> >> Hi, > >> >> > >> >> I'm trying to find a way to get the most recent entry for the > >> >> searched word. For ex., if I have a document with field name "user". > >> >> If I search for user:vivek, I want to get the document that was > >> >> indexed most recently. Two ways I could think of, > >> >> > >> >> 1) Sort by some time stamp field - but with millions of documents > this > >> >> becomes a huge memory problem as we have seen OOM with sorting before > >> >> 2) Boost the most recent document - I'm not sure how to do this. > >> >> Basically, we want to have the most recent document score higher than > >> >> any other and then we can retrieve just 10 records and sort in the > >> >> application by time stamp field to get the most recent document > >> >> matching the keyword. > >> >> > >> >> Any suggestion on how can this be done? > >> >> > >> >> Thanks, > >> >> -vivek > >> > > >> > > > > > >
