text: /*
  
  EGYPT Toolkit for Statistical Machine Translation
  Written by Yaser Al-Onaizan, Jan Curin, Michael Jahr, Kevin Knight, John Lafferty, Dan Melamed, David Purdy, Franz Och, Noah Smith, and David Yarowsky.
  
  This program is free software; you can redistribute it and/or
  modify it under the terms of the GNU General Public License
  as published by the Free Software Foundation; either version 2
  of the License, or (at your option) any later version.
  
  This program is distributed in the hope that it will be useful, 
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.
  
  You should have received a copy of the GNU General Public License
  along with this program; if not, write to the Free Software
  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 
  USA.
  
  */
  /* Perplexity.cc
   * =============
   * Mike Jahr, 7/21/99
   * Machine Translation group, WS99
   * Center for Language and Speech Processing
   * 
   * Last Modified by: Yaser Al-Onaizan, August 17, 1999
   *
   * Simple class used to calculate cross entropy and perplexity
   * of models.
   */
  
  #include "Perplexity.h"
  
  void Perplexity::record(string model){
    modelid.push_back(model);
    perp.push_back(perplexity());
    ce.push_back(cross_entropy());
  }
  