Xapian discuss - May 2007 - set_cutoff <percent_cutoff> [<weight_cutoff>]

set_cutoff works fine for sort by relevance and value ...
    - set_sort_by_relevance_then_value

set_cutoff   does not seems to do anything for sort by value and relevance
...
  - set_sort_by_value_then_relevance


It that correct?
-- 
Kevin Duraj
http://myhealthcare.com

On Fri, May 04, 2007 at 01:41:17PM -0700, Kevin Duraj
wrote:
> set_cutoff works fine for sort by relevance and value ...
>    - set_sort_by_relevance_then_value
> 
> set_cutoff   does not seems to do anything for sort by value and relevance
> ...
>  - set_sort_by_value_then_relevance
> 
> It that correct?
set_cutoff should work for any search.

Can you try this against SVN HEAD (or a recent snapshot)?  There have
been some changes in this area since the last release.

If it still fails, a fairly small example would be useful.

Cheers,
    Olly

I am rolling back to previous version of Xapian to see if in fact if
the new version has bug in around cutoff methods
set_sort_by_value_then_relevance,
then will post my findings ...

Thanks
-Kevin

On 5/4/07, Olly Betts <olly@survex.com> wrote:
>
> On Fri, May 04, 2007 at 01:41:17PM -0700, Kevin Duraj wrote:
> > set_cutoff works fine for sort by relevance and value ...
> >    - set_sort_by_relevance_then_value
> >
> > set_cutoff   does not seems to do anything for sort by value and
> relevance
> > ...
> >  - set_sort_by_value_then_relevance
> >
> > It that correct?
>
> set_cutoff should work for any search.
>
> Can you try this against SVN HEAD (or a recent snapshot)?  There have
> been some changes in this area since the last release.
>
> If it still fails, a fairly small example would be useful.
>
> Cheers,
>     Olly
>


-- 
Kevin Duraj
http://myhealthcare.com

On Fri, May 04, 2007 at 04:29:43PM -0700, Kevin Duraj
wrote:
> I am rolling back to previous version of Xapian to see if in fact if
> the new version has bug in around cutoff methods
> set_sort_by_value_then_relevance,
> then will post my findings ...
Rolling back?  Was the bug observed in SVN HEAD then?

Cheers,
    Olly

Summary,

I tested xapian-core 0.9.9 and xapian-core 0.9.10 they both ignore
set_cutoff method for the following scenarios ...
Only once scenario work correctly, sort by relevance then value with term
frequency.

----------------------------------------------------------------------------------------
Scenario 1.) NOT WORKING (set_cutoff method)
set_cutoff(95, 0)
set_weighting_scheme(Search::Xapian::BM25Weight->new(0,0,0,0,0));
enq->set_sort_by_relevance_then_value(1,1)
----------------------------------------------------------------------------------------
Scenario 2.) YES WORKING (set_cutoff method)
set_cutoff(95, 0)
set_weighting_scheme(Search::Xapian::BM25Weight->new(1,0,0,0,0));
enq->set_sort_by_relevance_then_value(1,1)
----------------------------------------------------------------------------------------
Scenario 3.) NOT WORKING (set_cutoff method)
set_cutoff(95, 0)
set_weighting_scheme(Search::Xapian::BM25Weight->new(0,0,0,0,0));
enq->set_sort_by_value_then_relevance(1,1)
----------------------------------------------------------------------------------------
Scenario 4.) NOT WORKING (set_cutoff method)
set_cutoff(95, 0)
set_weighting_scheme(Search::Xapian::BM25Weight->new(0,0,0,0,0));
enq->set_sort_by_relevance_then_value(1,1)
----------------------------------------------------------------------------------------

I am mostly interested in scenario 3 ... sort by value and then relevance
while ignoring term frequency weighting scheme and that scenario is not
working for set_cutoff method ...

Thanks for your help,

-Kevin Duraj
http://myhealthcare.com/

On 5/4/07, Olly Betts <olly@survex.com> wrote:
>
> On Fri, May 04, 2007 at 04:29:43PM -0700, Kevin Duraj wrote:
> > I am rolling back to previous version of Xapian to see if in fact if
> > the new version has bug in around cutoff methods
> > set_sort_by_value_then_relevance,
> > then will post my findings ...
>
> Rolling back?  Was the bug observed in SVN HEAD then?
>
> Cheers,
>     Olly
>


-- 
Kevin Duraj
http://myhealthcare.com