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Posted to java-user@lucene.apache.org by Otmar Caduff <oc...@gmail.com> on 2016/03/25 10:20:22 UTC
Subset Matching
Hi all
In Lucene, I know of the possibility of Occur.SHOULD, Occur.MUST and the
“minimum should match” setting on the boolean query.
Now, when querying, I want to
- (1) match the documents which either contain all the terms of the query
(Occur.MUST for all terms would do that) or,
- (2) if all terms for a given field of a document are a subset of the
query terms, that document should match as well.
Any clue on how to accomplish this?
Otmar
Re: Subset Matching
Posted by Jack Krupansky <ja...@gmail.com>.
There is no simple, direct way to do this "Boolean Reverse Query" in
Lucene, but I suggest filing a Jira to request this as a feature
improvement/new feature.
-- Jack Krupansky
On Fri, Mar 25, 2016 at 11:43 AM, Ahmet Arslan <io...@yahoo.com.invalid>
wrote:
> Hi Otmar,
>
> For this requirement, you need to create an additional field containing
> the number of words/terms in the field.
>
>
> For example.
>
> field : blue pill
> length = 2
>
>
> query : if you take the blue pill
> length : 6
>
>
> Please see my previous responses on the same topic:
>
> http://search-lucene.com/m/eHNluYPa11VSxlf1&subj=Re+search+for+documents+where+all+words+of+field+present+in+the+query
>
>
> http://search-lucene.com/m/eHNl9Yu6V1xx3rp&subj=Re+Match+All+terms+in+indexed+field+value
>
> I know they are solr responses but Function Queries exists in Lucene as
> far as know.
>
> Ahmet
> On Friday, March 25, 2016 11:20 AM, Otmar Caduff <oc...@gmail.com>
> wrote:
>
>
>
> Hi all
> In Lucene, I know of the possibility of Occur.SHOULD, Occur.MUST and the
> “minimum should match” setting on the boolean query.
>
> Now, when querying, I want to
> - (1) match the documents which either contain all the terms of the query
> (Occur.MUST for all terms would do that) or,
> - (2) if all terms for a given field of a document are a subset of the
> query terms, that document should match as well.
>
> Any clue on how to accomplish this?
>
> Otmar
>
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>
Re: Subset Matching
Posted by Ahmet Arslan <io...@yahoo.com.INVALID>.
Hi Otmar,
For this requirement, you need to create an additional field containing the number of words/terms in the field.
For example.
field : blue pill
length = 2
query : if you take the blue pill
length : 6
Please see my previous responses on the same topic:
http://search-lucene.com/m/eHNluYPa11VSxlf1&subj=Re+search+for+documents+where+all+words+of+field+present+in+the+query
http://search-lucene.com/m/eHNl9Yu6V1xx3rp&subj=Re+Match+All+terms+in+indexed+field+value
I know they are solr responses but Function Queries exists in Lucene as far as know.
Ahmet
On Friday, March 25, 2016 11:20 AM, Otmar Caduff <oc...@gmail.com> wrote:
Hi all
In Lucene, I know of the possibility of Occur.SHOULD, Occur.MUST and the
“minimum should match” setting on the boolean query.
Now, when querying, I want to
- (1) match the documents which either contain all the terms of the query
(Occur.MUST for all terms would do that) or,
- (2) if all terms for a given field of a document are a subset of the
query terms, that document should match as well.
Any clue on how to accomplish this?
Otmar
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Re: Subset Matching
Posted by Sujit Pal <su...@comcast.net>.
Hi Otmar,
Shouldn't Occur.SHOULD alone do what you ask? Documents that match all
terms in the query would be scored higher than documents that match fewer
than all terms.
-sujit
On Fri, Mar 25, 2016 at 2:20 AM, Otmar Caduff <oc...@gmail.com> wrote:
> Hi all
> In Lucene, I know of the possibility of Occur.SHOULD, Occur.MUST and the
> “minimum should match” setting on the boolean query.
>
> Now, when querying, I want to
> - (1) match the documents which either contain all the terms of the query
> (Occur.MUST for all terms would do that) or,
> - (2) if all terms for a given field of a document are a subset of the
> query terms, that document should match as well.
>
> Any clue on how to accomplish this?
>
> Otmar
>