xapian-letor/evalmetric.cc

   1 /* evalmetric.h: The abstract evaluation score file.
   2  *
   3  * Copyright (C) 2012 Parth Gupta
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License as
   7  * published by the Free Software Foundation; either version 2 of the
   8  * License, or (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301
  18  * USA
  19  */
  20
  21 #include <evalmetric.h>
  22
  23 namespace Xapian {
  24
  25     EvalMetric::EvalMetric() {
  26     }
  27
  28     /* override this in the sub-class like MAP, NDCG, MRR, etc*/
  29     double
  30     EvalMetric::score(const Xapian::RankList & /*rl*/) {
  31         return 1.0;
  32     }
  33 }