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/***********************************************************************
Moses - statistical machine translation system
Copyright (C) 2006-2011 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
#ifndef moses_PhraseDictionaryDynamicCacheBased_H
#define moses_PhraseDictionaryDynamicCacheBased_H
#include "moses/TypeDef.h"
#include "moses/TranslationModel/PhraseDictionary.h"
#ifdef WITH_THREADS
#include <boost/thread/shared_mutex.hpp>
#include <boost/thread/locks.hpp>
#endif
#define CBTM_SCORE_TYPE_UNDEFINED (-1)
#define CBTM_SCORE_TYPE_HYPERBOLA 0
#define CBTM_SCORE_TYPE_POWER 1
#define CBTM_SCORE_TYPE_EXPONENTIAL 2
#define CBTM_SCORE_TYPE_COSINE 3
#define CBTM_SCORE_TYPE_HYPERBOLA_REWARD 10
#define CBTM_SCORE_TYPE_POWER_REWARD 11
#define CBTM_SCORE_TYPE_EXPONENTIAL_REWARD 12
#define PI 3.14159265
namespace Moses
{
class ChartParser;
class ChartCellCollectionBase;
class ChartRuleLookupManager;
/** Implementation of a Cache-based phrase table.
*/
class PhraseDictionaryDynamicCacheBased : public PhraseDictionary
{
typedef std::vector<unsigned int> AgeCollection;
typedef std::pair<TargetPhraseCollection::shared_ptr , AgeCollection*> TargetCollectionAgePair;
typedef std::map<Phrase, TargetCollectionAgePair> cacheMap;
// data structure for the cache
cacheMap m_cacheTM;
std::vector<Scores> precomputedScores;
unsigned int m_maxAge;
size_t m_score_type; //scoring type of the match
size_t m_entries; //total number of entries in the cache
float m_lower_score; //lower_bound_score for no match
bool m_constant; //flag for setting a non-decaying cache
std::string m_initfiles; // vector of files loaded in the initialization phase
std::string m_name; // internal name to identify this instance of the Cache-based phrase table
#ifdef WITH_THREADS
//multiple readers - single writer lock
mutable boost::shared_mutex m_cacheLock;
#endif
friend std::ostream& operator<<(std::ostream&, const PhraseDictionaryDynamicCacheBased&);
public:
PhraseDictionaryDynamicCacheBased(const std::string &line);
~PhraseDictionaryDynamicCacheBased();
inline const std::string GetName() {
return m_name;
};
inline void SetName(const std::string name) {
m_name = name;
}
static const PhraseDictionaryDynamicCacheBased* Instance(const std::string& name) {
if (s_instance_map.find(name) == s_instance_map.end()) {
return NULL;
}
return s_instance_map[name];
}
static PhraseDictionaryDynamicCacheBased* InstanceNonConst(const std::string& name) {
if (s_instance_map.find(name) == s_instance_map.end()) {
return NULL;
}
return s_instance_map[name];
}
static const PhraseDictionaryDynamicCacheBased& Instance() {
return *s_instance;
}
static PhraseDictionaryDynamicCacheBased& InstanceNonConst() {
return *s_instance;
}
void Load();
void Load(const std::string files);
TargetPhraseCollection::shared_ptr
GetTargetPhraseCollection(const Phrase &src) const;
TargetPhraseCollection::shared_ptr
GetTargetPhraseCollectionLEGACY(Phrase const &src) const;
TargetPhraseCollection::shared_ptr
GetTargetPhraseCollectionNonCacheLEGACY(Phrase const &src) const;
// for phrase-based model
// void GetTargetPhraseCollectionBatch(const InputPathList &inputPathQueue) const;
// for syntax/hiero model (CKY+ decoding)
ChartRuleLookupManager* CreateRuleLookupManager(const ChartParser&, const ChartCellCollectionBase&, std::size_t);
void SetParameter(const std::string& key, const std::string& value);
void InitializeForInput(ttasksptr const& ttask);
// virtual void InitializeForInput(InputType const&) {
// /* Don't do anything source specific here as this object is shared between threads.*/
// }
void Print() const; // prints the cache
void Clear(); // clears the cache
void ClearEntries(std::string &entries);
void ClearSource(std::string &entries);
void Insert(std::string &entries);
void Execute(std::string command);
void ExecuteDlt(std::map<std::string, std::string> dlt_meta);
void SetScoreType(size_t type);
void SetMaxAge(unsigned int age);
protected:
static PhraseDictionaryDynamicCacheBased *s_instance;
static std::map< const std::string, PhraseDictionaryDynamicCacheBased * > s_instance_map;
float decaying_score(const int age); // calculates the decay score given the age
void Insert(std::vector<std::string> entries);
void Decay(); // traverse through the cache and decay each entry
void Decay(Phrase p); // traverse through the cache and decay each entry for a given Phrase
void Update(std::vector<std::string> entries, std::string ageString);
void Update(std::string sourceString, std::string targetString, std::string ageString, std::string waString="");
void Update(Phrase p, TargetPhrase tp, int age, std::string waString="");
void ClearEntries(std::vector<std::string> entries);
void ClearEntries(std::string sourceString, std::string targetString);
void ClearEntries(Phrase p, Phrase tp);
void ClearSource(std::vector<std::string> entries);
void ClearSource(Phrase sp);
void Execute(std::vector<std::string> commands);
void Execute_Single_Command(std::string command);
void SetPreComputedScores(const unsigned int numScoreComponent);
Scores GetPreComputedScores(const unsigned int age);
void Load_Multiple_Files(std::vector<std::string> files);
void Load_Single_File(const std::string file);
TargetPhrase *CreateTargetPhrase(const Phrase &sourcePhrase) const;
};
} // namespace Moses
#endif /* moses_PhraseDictionaryDynamicCacheBased_H_ */
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