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// memscore - in-memory phrase scoring for Statistical Machine Translation
// Christian Hardmeier, FBK-irst, Trento, 2010
// $Id$
#include <iostream>
#include <vector>
#include "phrasetable.h"
#include "scorer.h"
const char *progname;
typedef PhrasePairInfo::AlignmentVector::value_type VP;
bool cmp_counts(const VP &a1, const VP &a2);
int main(int argc, const char *argv[]);
bool cmp_counts(const VP &a1, const VP &a2)
{
return a1.second < a2.second;
}
int main(int argc, const char *argv[])
{
progname = argv[0];
if(argc == 1) {
std::cerr << "No scorers specified." << std::endl;
usage();
}
MemoryPhraseTable pt;
PhraseScorerFactory psf(pt);
typedef std::vector<PhraseScorer *> ScorerList;
ScorerList scorers;
for(int argp = 1; argp < argc; ) {
bool reverse;
if(!strcmp(argv[argp], "-s"))
reverse = false;
else if(!strcmp(argv[argp], "-r"))
reverse = true;
else
usage();
scorers.push_back(psf.create_scorer(argv, ++argp, reverse));
}
pt.load_data(std::cin);
pt.compute_phrase_statistics();
for(ScorerList::iterator s = scorers.begin(); s != scorers.end(); ++s)
(*s)->score_phrases();
for(PhrasePairCounts::const_iterator it = pt.raw_begin(); it != pt.raw_end(); ++it) {
PhrasePairInfo ppi(it);
Phrase src = ppi.get_src();
Phrase tgt = ppi.get_tgt();
const PhrasePairInfo::AlignmentVector av = ppi.get_alignments();
PhraseAlignment alig = std::max_element(av.begin(), av.end(), cmp_counts)->first;
std::cout << pt.get_src_phrase(src) << " ||| " << pt.get_tgt_phrase(tgt) << " ||| " << alig << " |||";
for(ScorerList::iterator s = scorers.begin(); s != scorers.end(); ++s)
std::cout << ' ' << (*s)->get_score(it);
std::cout << '\n'; // don't use std::endl to avoid flushing
}
}
void usage()
{
std::cerr << "Usage: " << progname << " <scorer1> <scorer2> ..." << std::endl <<
" where each scorer is specified as" << std::endl <<
" -s <scorer> <args> to estimate p(s|t)" << std::endl <<
" -r <scorer> <args> to estimate p(t|s)" << std::endl << std::endl;
std::cerr << "Implemented scorers:" << std::endl;
const std::vector<String> &v = PhraseScorerFactory::scorer_list();
std::copy(v.begin(), v.end(), std::ostream_iterator<std::string>(std::cerr, "\n"));
exit(1);
}
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