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

[Kevin Duraj]

Yes I reload old version xapian-core 0.9.9 but I did tried new version
xapian-core 0.9.10 and it behaves the same.
Here is part of my test Perl script ...
#----------------------------------------------------------------------------------------------#

  $DATABASE_DIR = "/home/xapian/index
  my $db = Search::Xapian::Database->new($DATABASE_DIR);

  $qp = Search::Xapian::QueryParser->new();
  $qp->set_default_op('Search::Xapian::QueryParser::OP_AND');

  $enq = $db->enquire($qp->parse_query($terms,
FLAG_BOOLEAN|FLAG_LOVEHATE|FLAG_PHRASE|FLAG_BOOLEAN_ANY_CASE));
  $enq->set_cutoff($cut1, $cut2);

  if(param('w') eq '0') {
$enq->set_weighting_scheme(Search::Xapian::BM25Weight->new(0,0,0,0,0));  }
  else {
$enq->set_weighting_scheme(Search::Xapian::BM25Weight->new(1,0,0,0,0));  }

  if(param('c') eq 'sort1')     {
$enq->set_sort_by_value_then_relevance($sort_key,$ascending);  }
  elsif(param('c') eq 'sort2') {
$enq->set_sort_by_relevance_then_value($sort_key,$ascending);  }
  foreach (@array)
  {
     $grand_total = $grand_total + $db->get_termfreq($_);
     print " ".  $_ . ":" . $db->get_termfreq($_) . ",&nbsp";
   }
  print "<BR>About <b>$grand_total</b> $type found matching current search
criteria.</font>";

    $end = new Benchmark; # end timer
    $diff = timediff($end, $start); # calculate difference
    print "<BR><font face=Verdana size=2>Search time:", timestr($diff,
'auto'), " seconds</font>";

    my @matches = $enq->matches($FIRST, $MAX);

   ....
  #----------------------------------------------------------------------------------------------#


I will try again Monday, have nice weekend. :-)
Thanks,
Kevin Duraj


On 5/4/07, Olly Betts <olly at survex.com> wrote:
>
> On Fri, May 04, 2007 at 06:43:52PM -0700, Kevin Duraj wrote:
> > I tested xapian-core 0.9.9 and xapian-core 0.9.10 they both ignore
> > set_cutoff method for the following scenarios ...
>
> Can you try with SVN HEAD?  As I said before, the relevant code there
> has changed since 0.9.10.
>
> > 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)
>
> You didn't show your script, but I just tried adding the equivalent
> lines to examples/quest.cc and this case seems to work for me with SVN
> HEAD.
>
> Cheers,
>    Olly
>



-- 
Kevin Duraj
http://myhealthcare.com