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Diffstat (limited to 'experimental/dual-model/MGIZA/src/transpair_model3.h')
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1 files changed, 84 insertions, 0 deletions
diff --git a/experimental/dual-model/MGIZA/src/transpair_model3.h b/experimental/dual-model/MGIZA/src/transpair_model3.h new file mode 100644 index 0000000..5fa43db --- /dev/null +++ b/experimental/dual-model/MGIZA/src/transpair_model3.h @@ -0,0 +1,84 @@ +/* + +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. + +*/ +/*-- +transpair_model3: representation of a translation pair for model3 training +allowing for fast access (esp. to t table). + +Franz Josef Och (30/07/99) +--*/ +#ifndef transpair_model3_h_fjo_defined +#define transpair_model3_h_fjo_defined +#include "Array2.h" +#include "defs.h" +#include "Vector.h" +#include "NTables.h" +#include "ATables.h" +#include "TTables.h" +#include "alignment.h" +#include <math.h> +#include "transpair_model2.h" + +extern double factorial(int n); +inline bool doubleEqual(const double a, const double b) +{ + if( a==b ) + return 1.0; + bool bl=fabs(1.0-a/b)<1e-10; + if( bl ) + return 1; + else + { + cerr << "DIFFERENT: " << a << " " << b << " " << a/b << " " << 1.0-a/b << endl; + return 0; + } +} + + +class transpair_model3 : public transpair_model2 +{ + protected: + Array2<PROB, Vector<PROB> > d, n; + PROB p0, p1; + public: + typedef transpair_model3 simpler_transpair_model; + transpair_model3(const Vector<WordIndex>&es, const Vector<WordIndex>&fs, tmodel<COUNT, PROB>&tTable, + amodel<PROB>&aTable, amodel<PROB>&dTable, nmodel<PROB>&nTable, + double _p1, double _p0, void*x=0); + const PROB&get_d(WordIndex i, WordIndex j)const + {return d(i, j);} + const PROB&get_a(WordIndex i, WordIndex j)const + {return a(i, j);} + const PROB&get_fertility(WordIndex i, WordIndex f)const + {massert(i>0);return (f>=MAX_FERTILITY)?n(i, MAX_FERTILITY):n(i, f);} + int modelnr()const{return 3;} + LogProb scoreOfAlignmentForChange(const alignment&)const + {return -1.0; } + LogProb scoreOfMove(const alignment&a, WordIndex new_i, WordIndex j, double thisValue=-1.0,bool withDistortions=1)const; + LogProb scoreOfSwap(const alignment&a, WordIndex j1, WordIndex j2, double thisValue=-1.0,bool withDistortions=1)const ; + LogProb _scoreOfMove(const alignment&a, WordIndex new_i, WordIndex j,double thisValue=-1.0)const; + LogProb _scoreOfSwap(const alignment&a, WordIndex j1, WordIndex j2,double thisValue=-1.0)const; + friend ostream&operator<<(ostream&out, const transpair_model3&m); + LogProb prob_of_target_and_alignment_given_source(const alignment&al,bool verb=0)const; + bool isSubOptimal()const{return 1;} + void computeScores(const alignment&al,vector<double>&d)const; +}; +#endif |