| commit | 572a474ee3ff3d22537772c4c491d91e15371bc1 | |
| author | Olly Betts <olly@survex.com> | |
| Tue, 16 Aug 2016 06:43:32 +0000 (16 18:43 +1200) | ||
| committer | Olly Betts <olly@survex.com> | |
| Fri, 16 Sep 2016 05:33:47 +0000 (16 17:33 +1200) | ||
| tree | 469824c11ad4366dcfc3f920aace0ecbaba5f563 | treesnapshot (tar.gz zip) |
| parent | 1c59cdbed06d1c7bb0fa26f1fa208aee2eb98fd4 | commitdiff |
Fix the BM25+ termweight calculation
The division to calculate the IDF is now done as a floating point
division, rather than an integer one.
Remove the fudge to avoid negative term weights, inherited from
our BM25 implementation - with BM25+'s formula these don't arise.
(cherry picked from commit e6b4afe928dec1b866a192941496c7c917065bb1)
The division to calculate the IDF is now done as a floating point
division, rather than an integer one.
Remove the fudge to avoid negative term weights, inherited from
our BM25 implementation - with BM25+'s formula these don't arise.
(cherry picked from commit e6b4afe928dec1b866a192941496c7c917065bb1)
| xapian-core/tests/api_weight.cc | diffblobblamehistory | |
| xapian-core/weight/bm25plusweight.cc | diffblobblamehistory |