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#include <fstream>
#include <iostream>
#include <sstream>
#include "fdict.h"
#include "filelib.h"
#include "hg.h"
#include "hg_io.h"
#include "sparse_vector.h"
#include "viterbi.h"
using namespace std;
/*
* Reads hypergraph from JSON file argv[1],
* reweights it using weights from argv[2],
* and outputs viterbi translation.
*
*/
int
main(int argc, char** argv)
{
clock_t begin_total = clock();
// read hg
clock_t begin_read = clock();
ReadFile rf(argv[1]);
Hypergraph hg;
HypergraphIO::ReadFromJSON(rf.stream(), &hg);
clock_t end_read = clock();
double elapsed_secs_read = double(end_read - begin_read) / CLOCKS_PER_SEC;
cerr << "read hg " << elapsed_secs_read << " s" << endl;
// read weights
clock_t begin_weights = clock();
SparseVector<double> v;
ifstream f(argv[2]);
string line;
while (getline(f, line)) {
istringstream ss(line);
string k; weight_t w;
ss >> k >> w;
v.add_value(FD::Convert(k), w);
}
clock_t end_weights = clock();
double elapsed_secs_weights = double(end_weights - begin_weights) / CLOCKS_PER_SEC;
cerr << "read weights " << elapsed_secs_weights << " s" << endl;
// reweight hg
clock_t begin_reweight = clock();
hg.Reweight(v);
clock_t end_reweight = clock();
double elapsed_secs_reweight = double(end_reweight - begin_reweight) / CLOCKS_PER_SEC;
cerr << "reweight " << elapsed_secs_reweight << " s" << endl;
// topsort
clock_t begin_top = clock();
hg.TopologicallySortNodesAndEdges(hg.NumberOfNodes()-1);
clock_t end_top = clock();
double elapsed_secs_top = double(end_top - begin_top) / CLOCKS_PER_SEC;
cerr << "topsort " << elapsed_secs_top << " s" << endl;
// viterbi
clock_t begin_viterbi = clock();
vector<WordID> trans;
ViterbiESentence(hg, &trans);
cout << TD::GetString(trans) << endl << flush;
clock_t end_viterbi = clock();
double elapsed_secs_viterbi = double(end_viterbi - begin_viterbi) / CLOCKS_PER_SEC;
cerr << "viterbi " << elapsed_secs_viterbi << " s" << endl;
// total
clock_t end_total = clock();
double elapsed_secs = double(end_total - begin_total) / CLOCKS_PER_SEC;
cerr << "total " << elapsed_secs << " s" << endl;
return 0;
}
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