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Posted to user@nutch.apache.org by Elisabeth Adler <el...@gmail.com> on 2011/09/05 15:46:17 UTC

Per-Field boosting in Nutch 1.3

Hi,

I was wondering if anybody can help me on how to configure per-field 
boosting for documents on Nutch 1.3 and Solr 3.3.0. I'm not sure if this 
is something I need to set in Nutch or in Solr, but I want matches in 
the title to be ranked higher than if the match is the content.

The FAQ [1] mentions the properties query.title.boost, query.host.boost, 
etc., which don't seem to be available any more.  NUTCH-858 [2] mentions 
that it is available again in 1.2, but not how to use it (again, the 
propertiesquery.*.boost don't work).

I tried setting the boost in the Solr schema.xml ([3]) by setting the 
boost attribute, but again, no luck.

Any help appreciated,
Thanks,
Elisabeth

[1] FAQ: 
http://wiki.apache.org/nutch/FAQ#How_can_I_influence_Nutch_scoring.3F
[2] Jira: https://issues.apache.org/jira/browse/NUTCH-858
[3] <field name="title" type="text" stored="true" indexed="true" 
boost="5.0"/>

Re: Per-Field boosting in Nutch 1.3

Posted by Elisabeth Adler <el...@gmail.com>.

Thanks Markus for the help, I will look into that parser.

On 05.09.2011 15:52, Markus Jelsma wrote:
> Hi,
>
> This is a Solr question. I sugget you read the DismaxQParser plugin page on
> the Solr wiki. It explains on how to queries multiple fields with per-field
> boosting: the qf-parameter.
>
> qf=content^1.5 title^4.5
>
> means a high boost on title.
>
> Cheers.
>
>> Hi,
>>
>> I was wondering if anybody can help me on how to configure per-field
>> boosting for documents on Nutch 1.3 and Solr 3.3.0. I'm not sure if this
>> is something I need to set in Nutch or in Solr, but I want matches in
>> the title to be ranked higher than if the match is the content.
>>
>> The FAQ [1] mentions the properties query.title.boost, query.host.boost,
>> etc., which don't seem to be available any more.  NUTCH-858 [2] mentions
>> that it is available again in 1.2, but not how to use it (again, the
>> propertiesquery.*.boost don't work).
>>
>> I tried setting the boost in the Solr schema.xml ([3]) by setting the
>> boost attribute, but again, no luck.
>>
>> Any help appreciated,
>> Thanks,
>> Elisabeth
>>
>> [1] FAQ:
>> http://wiki.apache.org/nutch/FAQ#How_can_I_influence_Nutch_scoring.3F
>> [2] Jira: https://issues.apache.org/jira/browse/NUTCH-858
>> [3]<field name="title" type="text" stored="true" indexed="true"
>> boost="5.0"/>

Re: Per-Field boosting in Nutch 1.3

Posted by Markus Jelsma <ma...@openindex.io>.

Hi,

This is a Solr question. I sugget you read the DismaxQParser plugin page on 
the Solr wiki. It explains on how to queries multiple fields with per-field 
boosting: the qf-parameter.

qf=content^1.5 title^4.5

means a high boost on title.

Cheers.

> Hi,
> 
> I was wondering if anybody can help me on how to configure per-field
> boosting for documents on Nutch 1.3 and Solr 3.3.0. I'm not sure if this
> is something I need to set in Nutch or in Solr, but I want matches in
> the title to be ranked higher than if the match is the content.
> 
> The FAQ [1] mentions the properties query.title.boost, query.host.boost,
> etc., which don't seem to be available any more.  NUTCH-858 [2] mentions
> that it is available again in 1.2, but not how to use it (again, the
> propertiesquery.*.boost don't work).
> 
> I tried setting the boost in the Solr schema.xml ([3]) by setting the
> boost attribute, but again, no luck.
> 
> Any help appreciated,
> Thanks,
> Elisabeth
> 
> [1] FAQ:
> http://wiki.apache.org/nutch/FAQ#How_can_I_influence_Nutch_scoring.3F
> [2] Jira: https://issues.apache.org/jira/browse/NUTCH-858
> [3] <field name="title" type="text" stored="true" indexed="true"
> boost="5.0"/>