Query Match Count

[Ryan McV <rp...@gmail.com>]

Hello All,

Is there a way to count the number of times a query matched in a particular
document?

For example, say we created a document that had the string "cheese cheese
cheese cheese" in the field that is being searched.
I would like to know that the query "cheese" matched four times in that
particular document. Is there a way to do this?

BTW, I am new to Lucene, so if I have any misconceptions that are apparent
please feel free to correct me.

Thanks,
Ryan

Re: Query Match Count

[Ryan McV <rp...@gmail.com>]

Thank you for your response.

Unfortunately, I do need the frequency for all the hits. I downloaded your
patch, and ofter applying it, It works! Thank you very much.

How ever, I could not apply the patch using the patch command (I am on
windows and using UnxUtils, could this be the problem). I had to go through
and manually apply the patch. This is the error I got while attempting to
apply it(using the --verbose option, and there was a lot of stuff in front
of it):

patch: **** malformed patch at line 207: rs) {

I am using the source downlaod of 3.0.2, although I could not get the patch
to work on the latest svn either.

Thank you again,
Ryan

On Sun, Aug 8, 2010 at 10:17 AM, Michael McCandless <
lucene@mikemccandless.com> wrote:

> Do you need this for a single document, eg for debugging?  If so,
> IndexSearcher.explain can give you these details.
>
> If you need it for all hits, then Lucene does not make that easy
> today, which is somewhat frustrating because this information (freq of
> occurrence of each clause matching the current hit) is being computed,
> to compute the net score; it's just not accessible.
>
> But this is requested fairly often, so... I just opened an issue to
> make this possible:
>
>  https://issues.apache.org/jira/browse/LUCENE-2590
>
> Mike
>
> On Sun, Aug 8, 2010 at 12:44 AM, Ryan McV <rp...@gmail.com> wrote:
> > Hello All,
> >
> > Is there a way to count the number of times a query matched in a
> particular
> > document?
> >
> > For example, say we created a document that had the string "cheese cheese
> > cheese cheese" in the field that is being searched.
> > I would like to know that the query "cheese" matched four times in that
> > particular document. Is there a way to do this?
> >
> > BTW, I am new to Lucene, so if I have any misconceptions that are
> apparent
> > please feel free to correct me.
> >
> > Thanks,
> > Ryan
> >
>
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>

Re: Query Match Count

[Michael McCandless <lu...@mikemccandless.com>]

Do you need this for a single document, eg for debugging?  If so,
IndexSearcher.explain can give you these details.

If you need it for all hits, then Lucene does not make that easy
today, which is somewhat frustrating because this information (freq of
occurrence of each clause matching the current hit) is being computed,
to compute the net score; it's just not accessible.

But this is requested fairly often, so... I just opened an issue to
make this possible:

  https://issues.apache.org/jira/browse/LUCENE-2590

Mike

On Sun, Aug 8, 2010 at 12:44 AM, Ryan McV <rp...@gmail.com> wrote:
> Hello All,
>
> Is there a way to count the number of times a query matched in a particular
> document?
>
> For example, say we created a document that had the string "cheese cheese
> cheese cheese" in the field that is being searched.
> I would like to know that the query "cheese" matched four times in that
> particular document. Is there a way to do this?
>
> BTW, I am new to Lucene, so if I have any misconceptions that are apparent
> please feel free to correct me.
>
> Thanks,
> Ryan
>

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