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https://github.com/moses-smt/mosesdecoder.git
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558c8bd9b7
git-svn-id: https://mosesdecoder.svn.sourceforge.net/svnroot/mosesdecoder/trunk@1651 1f5c12ca-751b-0410-a591-d2e778427230
56 lines
1.5 KiB
C++
56 lines
1.5 KiB
C++
#ifndef OPTIMIZER_H
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#define OPTIMIZER_H
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#include<vector>
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#include "FeatureStats.h"
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#include "FeatureData.h"
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#include "FeatureArray.h"
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#include "Scorer.h"
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#include "Point.h"
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typedef float featurescore;
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using namespace std;
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/**virtual class*/
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class Optimizer{
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public:
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Scorer * scorer;
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FeatureData * FData;
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/**number of lambda parameters*/
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unsigned dimension;
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Optimizer(unsigned d):dimension(d),scorer(NULL),FData(NULL){};
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void SetScorer(Scorer *S);
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void SetFData(FeatureData *F);
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~Optimizer(){
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delete scorer;
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delete FData;
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}
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/**Number of sentences in the tuning set*/
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unsigned N;
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/**main function that perform an optimization*/
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virtual Point run(const Point& init);
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/**given a set of lambdas, get the nbest for each sentence*/
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vector<unsigned> Get1bests(const Point& param);
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/**given a set of nbests, get the Statistical score*/
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statscore Getstatscore(vector<unsigned> nbests){scorer->score(nbests);};
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/**given a set of lambdas, get the total statistical score*/
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statscore Getstatscore(const Point& param){return Getstatscore(Get1bests(param));};
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statscore LineOptimize(const Point& start,Point direction,Point& best);//Get the optimal Lambda and the best score in a particular direction from a given Point
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}
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using namespace std;
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/**default basic optimizer*/
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class SimpleOptimizer: public Optimizer{
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private: float eps;
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public:
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SimpleOptimizer(unsigned dim,float _eps):Optimizer(dim),eps(_eps){};
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Point run(const Point& init);
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}
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#endif
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