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Posted to java-user@lucene.apache.org by prashant ullegaddi <pr...@gmail.com> on 2009/07/19 13:55:08 UTC
PageRanking with Lucene
Hi,
We have some 50M pages, and we also have computed PageRanks of those pages.
What's the best way to combine lucene's score with PageRank?
Regards,
Prashant.
Re: PageRanking with Lucene
Posted by Grant Ingersoll <gs...@apache.org>.
On Jul 22, 2009, at 6:30 AM, prashant ullegaddi wrote:
> Is it that boost of a Document is stored in 6-bits?
Kind of, the boost is stored in the norm, which also includes other
factors like length normalization. There is one byte for all of those
factors, whereas w/ the function approach, you can have as much
representation as you want, same as the payload approach.
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Re: PageRanking with Lucene
Posted by prashant ullegaddi <pr...@gmail.com>.
Is it that boost of a Document is stored in 6-bits?
On Wed, Jul 22, 2009 at 8:26 AM, Grant Ingersoll <gs...@apache.org>wrote:
> I'd probably look at the function package in Lucene. While the document
> boost can be used, it may not give you the granularity you need, as you only
> have something like 6 bits of representation. Some people have also done
> some things like a field with a single token that contains a payload with
> the value in it. Solr, for example, also has a FunctionQuery capability
> that can use an external value source (i.e. a File)
>
> -Grant
>
>
>
> On Jul 19, 2009, at 7:55 AM, prashant ullegaddi wrote:
>
> Hi,
>>
>> We have some 50M pages, and we also have computed PageRanks of those
>> pages.
>> What's the best way to combine lucene's score with PageRank?
>>
>> Regards,
>> Prashant.
>>
>
> --------------------------
> Grant Ingersoll
> http://www.lucidimagination.com/
>
> Search the Lucene ecosystem (Lucene/Solr/Nutch/Mahout/Tika/Droids) using
> Solr/Lucene:
> http://www.lucidimagination.com/search
>
>
>
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> To unsubscribe, e-mail: java-user-unsubscribe@lucene.apache.org
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>
>
Re: PageRanking with Lucene
Posted by Grant Ingersoll <gs...@apache.org>.
I'd probably look at the function package in Lucene. While the
document boost can be used, it may not give you the granularity you
need, as you only have something like 6 bits of representation. Some
people have also done some things like a field with a single token
that contains a payload with the value in it. Solr, for example, also
has a FunctionQuery capability that can use an external value source
(i.e. a File)
-Grant
On Jul 19, 2009, at 7:55 AM, prashant ullegaddi wrote:
> Hi,
>
> We have some 50M pages, and we also have computed PageRanks of those
> pages.
> What's the best way to combine lucene's score with PageRank?
>
> Regards,
> Prashant.
--------------------------
Grant Ingersoll
http://www.lucidimagination.com/
Search the Lucene ecosystem (Lucene/Solr/Nutch/Mahout/Tika/Droids)
using Solr/Lucene:
http://www.lucidimagination.com/search
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RE: PageRanking with Lucene
Posted by Uwe Schindler <uw...@thetaphi.de>.
You can set the PageRank as the boost factor for each document.
Uwe
-----
Uwe Schindler
H.-H.-Meier-Allee 63, D-28213 Bremen
http://www.thetaphi.de
eMail: uwe@thetaphi.de
> -----Original Message-----
> From: prashant ullegaddi [mailto:prashullegaddi@gmail.com]
> Sent: Sunday, July 19, 2009 1:55 PM
> To: java-user@lucene.apache.org
> Subject: PageRanking with Lucene
>
> Hi,
>
> We have some 50M pages, and we also have computed PageRanks of those
> pages.
> What's the best way to combine lucene's score with PageRank?
>
> Regards,
> Prashant.
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