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#ifndef _DTRAIN_H_
#define _DTRAIN_H_
#define DTRAIN_DOTS 10 // after how many inputs to display a '.'
#define DTRAIN_SCALE 100000
#include <iomanip>
#include <climits>
#include <string.h>
#include <boost/algorithm/string.hpp>
#include <boost/program_options.hpp>
#include "decoder.h"
#include "ff_register.h"
#include "sentence_metadata.h"
#include "verbose.h"
#include "viterbi.h"
using namespace std;
namespace po = boost::program_options;
namespace dtrain
{
inline void register_and_convert(const vector<string>& strs, vector<WordID>& ids)
{
vector<string>::const_iterator it;
for (it = strs.begin(); it < strs.end(); it++)
ids.push_back(TD::Convert(*it));
}
inline string gettmpf(const string path, const string infix)
{
char fn[path.size() + infix.size() + 8];
strcpy(fn, path.c_str());
strcat(fn, "/");
strcat(fn, infix.c_str());
strcat(fn, "-XXXXXX");
if (!mkstemp(fn)) {
cerr << "Cannot make temp file in" << path << " , exiting." << endl;
exit(1);
}
return string(fn);
}
typedef double score_t;
struct ScoredHyp
{
vector<WordID> w;
SparseVector<double> f;
score_t model;
score_t score;
unsigned rank;
};
struct LocalScorer
{
unsigned N_;
vector<score_t> w_;
virtual score_t
Score(vector<WordID>& hyp, vector<WordID>& ref, const unsigned rank, const unsigned src_len)=0;
virtual void Reset() {} // only for ApproxBleuScorer, LinearBleuScorer
inline void
Init(unsigned N, vector<score_t> weights)
{
assert(N > 0);
N_ = N;
if (weights.empty()) for (unsigned i = 0; i < N_; i++) w_.push_back(1./N_);
else w_ = weights;
}
inline score_t
brevity_penalty(const unsigned hyp_len, const unsigned ref_len)
{
if (hyp_len > ref_len) return 1;
return exp(1 - (score_t)ref_len/hyp_len);
}
};
struct HypSampler : public DecoderObserver
{
LocalScorer* scorer_;
vector<WordID>* ref_;
unsigned f_count_, sz_;
virtual vector<ScoredHyp>* GetSamples()=0;
inline void SetScorer(LocalScorer* scorer) { scorer_ = scorer; }
inline void SetRef(vector<WordID>& ref) { ref_ = &ref; }
inline unsigned get_f_count() { return f_count_; }
inline unsigned get_sz() { return sz_; }
};
struct HSReporter
{
string task_id_;
HSReporter(string task_id) : task_id_(task_id) {}
inline void update_counter(string name, unsigned amount) {
cerr << "reporter:counter:" << task_id_ << "," << name << "," << amount << endl;
}
inline void update_gcounter(string name, unsigned amount) {
cerr << "reporter:counter:Global," << name << "," << amount << endl;
}
};
inline ostream& _np(ostream& out) { return out << resetiosflags(ios::showpos); }
inline ostream& _p(ostream& out) { return out << setiosflags(ios::showpos); }
inline ostream& _p2(ostream& out) { return out << setprecision(2); }
inline ostream& _p5(ostream& out) { return out << setprecision(5); }
inline void printWordIDVec(vector<WordID>& v)
{
for (unsigned i = 0; i < v.size(); i++) {
cerr << TD::Convert(v[i]);
if (i < v.size()-1) cerr << " ";
}
}
template<typename T>
inline T sign(T z)
{
if (z == 0) return 0;
return z < 0 ? -1 : +1;
}
} // namespace
#endif
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