lucene-java-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Ian Lea <ian....@gmail.com>
Subject Re: Custom Payload Analyzer and Query
Date Tue, 07 Feb 2012 10:53:03 GMT
How does searching with PayloadSpanUtil/PayloadTermQuery/etc work to
exclude/filter the matching terms based on the payload within a query
itself, the original question?

The javadocs for PayloadSpanUtil say that the IndexReader should only
contain doc of interest so not much use for a general query on a
normal index.  PayloadTermQuery and PayloadNearQuery factor in the
value of the payloads using Similarity.scorePayload(...).  Can you
return 0 from that to exclude docs?


--
Ian.


On Tue, Feb 7, 2012 at 9:11 AM, Tommaso Teofili
<tommaso.teofili@gmail.com> wrote:
> 2012/2/6 Ian Lea <ian.lea@gmail.com>
>
>> Not sure if you got an answer to this or not.  Don't recall seeing one
>> and gmail threading says not.
>>
>> > Is the use of payloads I've described appropriate?
>>
>> Sounds OK to me, although I'm not sure why you can't store the
>> metadata as a Document Field.
>>
>> > Can I exclude/filter the matching terms based on the payload within a
>> query itself ?
>>
>> I think not.  Could if the metadata was an indexed Field.
>>
>
> What you may do is initially put your metadata inside the token type, then
> use the TypeTokenFilter to filter out some of them then "copy“ them inside
> the payloads using TypeAsPayloadTokenFilter and search with
> PayloadSpanUtil/PayloadTermQuery/etc.
>
> HTH,
> Tommaso
>
>
>>
>>
>>
>> --
>> Ian.
>>
>>
>> On Mon, Jan 30, 2012 at 10:24 PM,  <ktjex@mmm.com> wrote:
>> > I'm working on providing advanced searching for annotated Medical
>> > Documents (using UIMA).  In the context of an annotated document, I
>> > identify relevant medical terms, as well as the negation of certain
>> terms.
>> >  Following what I've read and seen in Lucene examples, I've been able to
>> > provide a search that takes into account the metadata contained in the
>> > payload.  Although very primitive, I've implemented a search which
>> returns
>> > the payloads (using PayloadSpanUtil), and then excludes those terms where
>> > the payload doesn't meet the criteria.
>> >
>> > Is the use of payloads I've described appropriate?  Can I exclude/filter
>> > the matching terms based on the payload within a query itself ?   Are
>> > there any examples that do this?
>> >
>> > Cheers,
>> > Kyley
>>
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: java-user-unsubscribe@lucene.apache.org
>> For additional commands, e-mail: java-user-help@lucene.apache.org
>>
>>

---------------------------------------------------------------------
To unsubscribe, e-mail: java-user-unsubscribe@lucene.apache.org
For additional commands, e-mail: java-user-help@lucene.apache.org


Mime
View raw message