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https://github.com/moses-smt/mosesdecoder.git
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87 lines
2.6 KiB
C++
87 lines
2.6 KiB
C++
// $Id$
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/***********************************************************************
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Moses - factored phrase-based language decoder
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Copyright (C) 2006 University of Edinburgh
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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***********************************************************************/
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#ifndef moses_SquareMatrix_h
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#define moses_SquareMatrix_h
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#include <iostream>
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#include "TypeDef.h"
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#include "Util.h"
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#include "Bitmap.h"
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namespace Moses
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{
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//! A square array of floats to store future costs in the phrase-based decoder
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class SquareMatrix
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{
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friend std::ostream& operator<<(std::ostream &out, const SquareMatrix &matrix);
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protected:
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const size_t m_size; /**< length of the square (sentence length) */
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float *m_array; /**< two-dimensional array to store floats */
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SquareMatrix(); // not implemented
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SquareMatrix(const SquareMatrix ©); // not implemented
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public:
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SquareMatrix(size_t size)
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:m_size(size) {
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m_array = (float*) malloc(sizeof(float) * size * size);
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}
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~SquareMatrix() {
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free(m_array);
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}
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// set upper triangle
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void InitTriangle(float val);
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/** Returns length of the square: typically the sentence length */
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inline size_t GetSize() const {
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return m_size;
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}
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/** Get a future cost score for a span */
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inline float GetScore(size_t startPos, size_t endPos) const {
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return m_array[startPos * m_size + endPos];
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}
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/** Set a future cost score for a span */
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inline void SetScore(size_t startPos, size_t endPos, float value) {
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m_array[startPos * m_size + endPos] = value;
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}
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float CalcEstimatedScore( Bitmap const& ) const;
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float CalcEstimatedScore( Bitmap const&, size_t startPos, size_t endPos ) const;
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TO_STRING();
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};
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inline std::ostream& operator<<(std::ostream &out, const SquareMatrix &matrix)
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{
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for (size_t endPos = 0 ; endPos < matrix.GetSize() ; endPos++) {
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for (size_t startPos = 0 ; startPos < matrix.GetSize() ; startPos++)
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out << matrix.GetScore(startPos, endPos) << " ";
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out << std::endl;
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}
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return out;
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}
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}
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#endif
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