lucene-general mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Michael McCandless <luc...@mikemccandless.com>
Subject Re: Modify Norm
Date Fri, 13 Feb 2009 00:14:07 GMT

Can you simply sort by that string field?  (Which also uses FieldCache  
under the hood to get the values).

Mike

On Feb 12, 2009, at 3:46 PM, sendtoprat@yahoo.co.in wrote:

>
> I guess I could use, 	String[] s =
> ExtendedFieldCache.EXT_DEFAULT.getStrings(reader, fieldname);
> It will consume memory but should not be that bad. For my index this  
> field
> has sortable string value which I could use in my model. I only need  
> to do
> this for one field. Comment ?
>
> Pratyush
>
> Michael McCandless-2 wrote:
>>
>>
>> [You'd probably get more responses on java-user@ instead of general@]
>>
>> Could you use per-field boost?
>>
>> Or, since it sounds like you have a separate field with the boost you
>> want,
>> maybe you could do this all at search time using a function query?
>>
>> An advanced possibility is to make your own indexing chain, and use a
>> different
>> NormsWriter, but that's an extremely big hammer to pull out for this
>> nail.
>>
>> Mike
>>
>> sendtoprat@yahoo.co.in wrote:
>>
>>>
>>> Hi
>>> How can I set my own norm value during indexing time. From my quick
>>> reading
>>> of code, I believe that norm values are written by NormsWriter class
>>> which
>>> is called from final class DocumentsWriter. Norm values are set by
>>> calling
>>> org.apache.lucene.search.Similarity#lengthNorm(String fieldName, int
>>> numTokens). But I need to set the norm using the field value which
>>> is a
>>> float number. I will be using this norm for my retrieval model. I
>>> cannot use
>>> document.setBoost(), as i need to boost the fields differently.
>>>
>>> thanks
>>> Pratyush
>>> -- 
>>> View this message in context:
>>> http://www.nabble.com/Modify-Norm-tp21959177p21959177.html
>>> Sent from the Lucene - General mailing list archive at Nabble.com.
>>>
>>
>>
>>
>
> -- 
> View this message in context: http://www.nabble.com/Modify-Norm-tp21959177p21984666.html
> Sent from the Lucene - General mailing list archive at Nabble.com.
>


Mime
View raw message