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Diffstat (limited to 'moses/src/ScoreComponentCollection.h')
| -rw-r--r-- | moses/src/ScoreComponentCollection.h | 173 |
1 files changed, 0 insertions, 173 deletions
diff --git a/moses/src/ScoreComponentCollection.h b/moses/src/ScoreComponentCollection.h deleted file mode 100644 index 8e7bca80f..000000000 --- a/moses/src/ScoreComponentCollection.h +++ /dev/null @@ -1,173 +0,0 @@ -// $Id$ - -/*********************************************************************** -Moses - factored phrase-based language decoder -Copyright (C) 2006 University of Edinburgh - -This library is free software; you can redistribute it and/or -modify it under the terms of the GNU Lesser General Public -License as published by the Free Software Foundation; either -version 2.1 of the License, or (at your option) any later version. - -This library 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 -Lesser General Public License for more details. - -You should have received a copy of the GNU Lesser General Public -License along with this library; if not, write to the Free Software -Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA -***********************************************************************/ - -#pragma once - -#include <numeric> -#include <assert.h> -#include "ScoreProducer.h" -#include "ScoreIndexManager.h" - -/*** An unweighted collection of scores for a translation or step in a translation. - * - * In the factored phrase-based models that are implemented by moses, there are a set of - * scores that come from a variety of sources (translation probabilities, language model - * probablilities, distortion probabilities, generation probabilities). Furthermore, while - * some of these scores may be 0, this number is fixed (and generally quite small, ie, less - * than 15), for a given model. - * - * The values contained in ScoreComponentCollection2 objects are unweighted scores (log-probs). - * - * ScoreComponentCollection objects can be added and subtracted, which makes them appropriate - * to be the datatype used to return the result of a score computations (in this case they will - * have most values set to zero, except for the ones that are results of the indivudal computation - * this will then be added into the "running total" in the Hypothesis. In fact, for a score - * to be tracked in the hypothesis (and thus to participate in the decoding process), a class - * representing that score must extend the ScoreProducer abstract base class. For an example - * refer to the DistortionScoreProducer class. - */ -class ScoreComponentCollection2 { - friend std::ostream& operator<<(std::ostream& os, const ScoreComponentCollection2& rhs); -private: - std::vector<float> m_scores; - const ScoreIndexManager* m_sim; - -public: - //! Create a new score collection with all values set to 0.0 - ScoreComponentCollection2(); - - //! Clone a score collection - ScoreComponentCollection2(const ScoreComponentCollection2& rhs) - : m_scores(rhs.m_scores) - , m_sim(rhs.m_sim) - {} - - //! Set all values to 0.0 - void ZeroAll() - { - for (std::vector<float>::iterator i=m_scores.begin(); i!=m_scores.end(); ++i) - *i = 0.0f; - } - - //! add the score in rhs - void PlusEquals(const ScoreComponentCollection2& rhs) - { - assert(m_scores.size() >= rhs.m_scores.size()); - const size_t l = rhs.m_scores.size(); - for (size_t i=0; i<l; i++) { m_scores[i] += rhs.m_scores[i]; } - } - - //! subtract the score in rhs - void MinusEquals(const ScoreComponentCollection2& rhs) - { - assert(m_scores.size() >= rhs.m_scores.size()); - const size_t l = rhs.m_scores.size(); - for (size_t i=0; i<l; i++) { m_scores[i] -= rhs.m_scores[i]; } - } - - //! Add scores from a single ScoreProducer only - //! The length of scores must be equal to the number of score components - //! produced by sp - void PlusEquals(const ScoreProducer* sp, const std::vector<float>& scores) - { - - if(scores.size() != sp->GetNumScoreComponents()) std::cerr<<"ERROr: "<<scores.size()<<" "<<sp->GetNumScoreComponents()<<"\n"; - - assert(scores.size() == sp->GetNumScoreComponents()); - size_t i = m_sim->GetBeginIndex(sp->GetScoreBookkeepingID()); - for (std::vector<float>::const_iterator vi = scores.begin(); - vi != scores.end(); ++vi) - { - m_scores[i++] += *vi; - } - } - - //! Special version PlusEquals(ScoreProducer, vector<float>) - //! to add the score from a single ScoreProducer that produces - //! a single value - void PlusEquals(const ScoreProducer* sp, float score) - { - assert(1 == sp->GetNumScoreComponents()); - const size_t i = m_sim->GetBeginIndex(sp->GetScoreBookkeepingID()); - m_scores[i] += score; - } - - //! Special version PlusEquals(ScoreProducer, vector<float>) - //! to add the score from a single ScoreProducer that produces - //! a single value - void Assign(const ScoreProducer* sp, float score) - { - assert(1 == sp->GetNumScoreComponents()); - const size_t i = m_sim->GetBeginIndex(sp->GetScoreBookkeepingID()); - m_scores[i] = score; - } - - //! Used to find the weighted total of scores. rhs should contain a vector of weights - //! of the same length as the number of scores. - float InnerProduct(const std::vector<float>& rhs) const - { - return std::inner_product(m_scores.begin(), m_scores.end(), rhs.begin(), 0.0f); - } - - float PartialInnerProduct(const ScoreProducer* sp, const std::vector<float>& rhs) const - { - std::vector<float> lhs = GetScoresForProducer(sp); - assert(lhs.size() == rhs.size()); - return std::inner_product(lhs.begin(), lhs.end(), rhs.begin(), 0.0f); - } - - //! return a vector of all the scores associated with a certain ScoreProducer - std::vector<float> GetScoresForProducer(const ScoreProducer* sp) const - { - size_t id = sp->GetScoreBookkeepingID(); - const size_t begin = m_sim->GetBeginIndex(id); - const size_t end = m_sim->GetEndIndex(id); - std::vector<float> res(end-begin); - size_t j = 0; - for (size_t i = begin; i < end; i++) { - res[j++] = m_scores[i]; - } - return res; - } - - //! if a ScoreProducer produces a single score (for example, a language model score) - //! this will return it. If not, this method will throw - float GetScoreForProducer(const ScoreProducer* sp) const - { - size_t id = sp->GetScoreBookkeepingID(); - const size_t begin = m_sim->GetBeginIndex(id); -#ifndef NDEBUG - const size_t end = m_sim->GetEndIndex(id); - assert(end-begin == 1); -#endif - return m_scores[begin]; - } - -}; - -inline std::ostream& operator<<(std::ostream& os, const ScoreComponentCollection2& rhs) -{ - os << "<<" << rhs.m_scores[0]; - for (size_t i=1; i<rhs.m_scores.size(); i++) - os << ", " << rhs.m_scores[i]; - return os << ">>"; -} - |