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// $Id: MainMT.cpp 3045 2010-04-05 13:07:29Z hieuhoang1972 $
/***********************************************************************
Moses - factored phrase-based language decoder
Copyright (C) 2009 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
***********************************************************************/
/**
* Moses main, for single-threaded and multi-threaded.
**/
#include <exception>
#include <fstream>
#include <sstream>
#include <vector>
#include "util/usage.hh"
#ifdef WIN32
// Include Visual Leak Detector
//#include <vld.h>
#endif
#include "Hypothesis.h"
#include "IOWrapper.h"
#include "LatticeMBR.h"
#include "Manager.h"
#include "StaticData.h"
#include "Util.h"
#include "Timer.h"
#include "mbr.h"
#include "ThreadPool.h"
#include "TranslationAnalysis.h"
#include "OutputCollector.h"
#ifdef HAVE_PROTOBUF
#include "hypergraph.pb.h"
#endif
using namespace std;
using namespace Moses;
using namespace MosesCmd;
namespace MosesCmd
{
// output floats with three significant digits
static const size_t PRECISION = 3;
/** Enforce rounding */
void fix(std::ostream& stream, size_t size)
{
stream.setf(std::ios::fixed);
stream.precision(size);
}
/** Translates a sentence.
* - calls the search (Manager)
* - applies the decision rule
* - outputs best translation and additional reporting
**/
class TranslationTask : public Task
{
public:
TranslationTask(size_t lineNumber,
InputType* source, OutputCollector* outputCollector, OutputCollector* nbestCollector,
OutputCollector* latticeSamplesCollector,
OutputCollector* wordGraphCollector, OutputCollector* searchGraphCollector,
OutputCollector* detailedTranslationCollector,
OutputCollector* alignmentInfoCollector,
OutputCollector* unknownsCollector) :
m_source(source), m_lineNumber(lineNumber),
m_outputCollector(outputCollector), m_nbestCollector(nbestCollector),
m_latticeSamplesCollector(latticeSamplesCollector),
m_wordGraphCollector(wordGraphCollector), m_searchGraphCollector(searchGraphCollector),
m_detailedTranslationCollector(detailedTranslationCollector),
m_alignmentInfoCollector(alignmentInfoCollector),
m_unknownsCollector(unknownsCollector) {}
/** Translate one sentence
* gets called by main function implemented at end of this source file */
void Run() {
// report thread number
#if defined(WITH_THREADS) && defined(BOOST_HAS_PTHREADS)
TRACE_ERR("Translating line " << m_lineNumber << " in thread id " << pthread_self() << std::endl);
#endif
Timer translationTime;
translationTime.start();
// shorthand for "global data"
const StaticData &staticData = StaticData::Instance();
// input sentence
Sentence sentence();
// set translation system
const TranslationSystem& system = staticData.GetTranslationSystem(TranslationSystem::DEFAULT);
// execute the translation
// note: this executes the search, resulting in a search graph
// we still need to apply the decision rule (MAP, MBR, ...)
if ((*m_source).GetSize() == 0) return;
Manager manager(m_lineNumber, *m_source,staticData.GetSearchAlgorithm(), &system);
manager.ProcessSentence();
// output word graph
if (m_wordGraphCollector) {
ostringstream out;
fix(out,PRECISION);
manager.GetWordGraph(m_lineNumber, out);
m_wordGraphCollector->Write(m_lineNumber, out.str());
}
// output search graph
if (m_searchGraphCollector) {
ostringstream out;
fix(out,PRECISION);
manager.OutputSearchGraph(m_lineNumber, out);
m_searchGraphCollector->Write(m_lineNumber, out.str());
#ifdef HAVE_PROTOBUF
if (staticData.GetOutputSearchGraphPB()) {
ostringstream sfn;
sfn << staticData.GetParam("output-search-graph-pb")[0] << '/' << m_lineNumber << ".pb" << ends;
string fn = sfn.str();
VERBOSE(2, "Writing search graph to " << fn << endl);
fstream output(fn.c_str(), ios::trunc | ios::binary | ios::out);
manager.SerializeSearchGraphPB(m_lineNumber, output);
}
#endif
}
// apply decision rule and output best translation(s)
if (m_outputCollector) {
ostringstream out;
ostringstream debug;
fix(debug,PRECISION);
// all derivations - send them to debug stream
if (staticData.PrintAllDerivations()) {
manager.PrintAllDerivations(m_lineNumber, debug);
}
// MAP decoding: best hypothesis
const Hypothesis* bestHypo = NULL;
if (!staticData.UseMBR())
{
bestHypo = manager.GetBestHypothesis();
if (bestHypo) {
if (staticData.IsPathRecoveryEnabled()) {
OutputInput(out, bestHypo);
out << "||| ";
}
OutputBestSurface(
out,
bestHypo,
staticData.GetOutputFactorOrder(),
staticData.GetReportSegmentation(),
staticData.GetReportAllFactors());
OutputAlignment(m_alignmentInfoCollector, m_lineNumber, bestHypo);
IFVERBOSE(1) {
debug << "BEST TRANSLATION: " << *bestHypo << endl;
}
}
out << endl;
}
// MBR decoding (n-best MBR, lattice MBR, consensus)
else
{
// we first need the n-best translations
size_t nBestSize = staticData.GetMBRSize();
if (nBestSize <= 0) {
cerr << "ERROR: negative size for number of MBR candidate translations not allowed (option mbr-size)" << endl;
exit(1);
}
TrellisPathList nBestList;
manager.CalcNBest(nBestSize, nBestList,true);
VERBOSE(2,"size of n-best: " << nBestList.GetSize() << " (" << nBestSize << ")" << endl);
IFVERBOSE(2) {
PrintUserTime("calculated n-best list for (L)MBR decoding");
}
// lattice MBR
if (staticData.UseLatticeMBR()) {
if (m_nbestCollector) {
//lattice mbr nbest
vector<LatticeMBRSolution> solutions;
size_t n = min(nBestSize, staticData.GetNBestSize());
getLatticeMBRNBest(manager,nBestList,solutions,n);
ostringstream out;
OutputLatticeMBRNBest(out, solutions,m_lineNumber);
m_nbestCollector->Write(m_lineNumber, out.str());
} else {
//Lattice MBR decoding
vector<Word> mbrBestHypo = doLatticeMBR(manager,nBestList);
OutputBestHypo(mbrBestHypo, m_lineNumber, staticData.GetReportSegmentation(),
staticData.GetReportAllFactors(),out);
IFVERBOSE(2) {
PrintUserTime("finished Lattice MBR decoding");
}
}
}
// consensus decoding
else if (staticData.UseConsensusDecoding()) {
const TrellisPath &conBestHypo = doConsensusDecoding(manager,nBestList);
OutputBestHypo(conBestHypo, m_lineNumber,
staticData.GetReportSegmentation(),
staticData.GetReportAllFactors(),out);
OutputAlignment(m_alignmentInfoCollector, m_lineNumber, conBestHypo);
IFVERBOSE(2) {
PrintUserTime("finished Consensus decoding");
}
}
// n-best MBR decoding
else {
const Moses::TrellisPath &mbrBestHypo = doMBR(nBestList);
OutputBestHypo(mbrBestHypo, m_lineNumber,
staticData.GetReportSegmentation(),
staticData.GetReportAllFactors(),out);
OutputAlignment(m_alignmentInfoCollector, m_lineNumber, mbrBestHypo);
IFVERBOSE(2) {
PrintUserTime("finished MBR decoding");
}
}
}
// report best translation to output collector
m_outputCollector->Write(m_lineNumber,out.str(),debug.str());
}
// output n-best list
if (m_nbestCollector && !staticData.UseLatticeMBR()) {
TrellisPathList nBestList;
ostringstream out;
manager.CalcNBest(staticData.GetNBestSize(), nBestList,staticData.GetDistinctNBest());
OutputNBest(out, nBestList, staticData.GetOutputFactorOrder(), manager.GetTranslationSystem(), m_lineNumber,
staticData.GetReportSegmentation());
m_nbestCollector->Write(m_lineNumber, out.str());
}
//lattice samples
if (m_latticeSamplesCollector) {
TrellisPathList latticeSamples;
ostringstream out;
manager.CalcLatticeSamples(staticData.GetLatticeSamplesSize(), latticeSamples);
OutputNBest(out,latticeSamples, staticData.GetOutputFactorOrder(), manager.GetTranslationSystem(), m_lineNumber,
staticData.GetReportSegmentation());
m_latticeSamplesCollector->Write(m_lineNumber, out.str());
}
// detailed translation reporting
if (m_detailedTranslationCollector) {
ostringstream out;
fix(out,PRECISION);
TranslationAnalysis::PrintTranslationAnalysis(manager.GetTranslationSystem(), out, manager.GetBestHypothesis());
m_detailedTranslationCollector->Write(m_lineNumber,out.str());
}
//list of unknown words
if (m_unknownsCollector) {
const vector<Phrase*>& unknowns = manager.getSntTranslationOptions()->GetUnknownSources();
ostringstream out;
for (size_t i = 0; i < unknowns.size(); ++i) {
out << *(unknowns[i]);
}
out << endl;
m_unknownsCollector->Write(m_lineNumber, out.str());
}
// report additional statistics
IFVERBOSE(2) {
PrintUserTime("Sentence Decoding Time:");
}
manager.CalcDecoderStatistics();
VERBOSE(1, "Line " << m_lineNumber << ": Translation took " << translationTime << " seconds total" << endl);
}
~TranslationTask() {
delete m_source;
}
private:
InputType* m_source;
size_t m_lineNumber;
OutputCollector* m_outputCollector;
OutputCollector* m_nbestCollector;
OutputCollector* m_latticeSamplesCollector;
OutputCollector* m_wordGraphCollector;
OutputCollector* m_searchGraphCollector;
OutputCollector* m_detailedTranslationCollector;
OutputCollector* m_alignmentInfoCollector;
OutputCollector* m_unknownsCollector;
std::ofstream *m_alignmentStream;
};
static void PrintFeatureWeight(const FeatureFunction* ff)
{
size_t numScoreComps = ff->GetNumScoreComponents();
if (numScoreComps != ScoreProducer::unlimited) {
vector<float> values = StaticData::Instance().GetAllWeights().GetScoresForProducer(ff);
for (size_t i = 0; i < numScoreComps; ++i)
cout << ff->GetScoreProducerDescription() << " "
<< ff->GetScoreProducerWeightShortName() << " "
<< values[i] << endl;
}
else {
if (ff->GetSparseProducerWeight() == 1)
cout << ff->GetScoreProducerDescription() << " " <<
ff->GetScoreProducerWeightShortName() << " sparse" << endl;
else
cout << ff->GetScoreProducerDescription() << " " <<
ff->GetScoreProducerWeightShortName() << " " << ff->GetSparseProducerWeight() << endl;
}
}
static void ShowWeights()
{
fix(cout,6);
const StaticData& staticData = StaticData::Instance();
const TranslationSystem& system = staticData.GetTranslationSystem(TranslationSystem::DEFAULT);
const vector<const StatelessFeatureFunction*>& slf =system.GetStatelessFeatureFunctions();
const vector<const StatefulFeatureFunction*>& sff = system.GetStatefulFeatureFunctions();
for (size_t i = 0; i < sff.size(); ++i) {
PrintFeatureWeight(sff[i]);
}
for (size_t i = 0; i < slf.size(); ++i) {
if (slf[i]->GetScoreProducerWeightShortName() != "u") {
PrintFeatureWeight(slf[i]);
}
}
}
} //namespace
/** main function of the command line version of the decoder **/
int main(int argc, char** argv)
{
try {
#ifdef HAVE_PROTOBUF
GOOGLE_PROTOBUF_VERIFY_VERSION;
#endif
// echo command line, if verbose
IFVERBOSE(1) {
TRACE_ERR("command: ");
for(int i=0; i<argc; ++i) TRACE_ERR(argv[i]<<" ");
TRACE_ERR(endl);
}
// set number of significant decimals in output
fix(cout,PRECISION);
fix(cerr,PRECISION);
// load all the settings into the Parameter class
// (stores them as strings, or array of strings)
Parameter* params = new Parameter();
if (!params->LoadParam(argc,argv)) {
exit(1);
}
// initialize all "global" variables, which are stored in StaticData
// note: this also loads models such as the language model, etc.
if (!StaticData::LoadDataStatic(params, argv[0])) {
exit(1);
}
// setting "-show-weights" -> just dump out weights and exit
if (params->isParamSpecified("show-weights")) {
ShowWeights();
exit(0);
}
// shorthand for accessing information in StaticData
const StaticData& staticData = StaticData::Instance();
//initialise random numbers
srand(time(NULL));
// set up read/writing class
IOWrapper* ioWrapper = GetIOWrapper(staticData);
if (!ioWrapper) {
cerr << "Error; Failed to create IO object" << endl;
exit(1);
}
// check on weights
const ScoreComponentCollection& weights = staticData.GetAllWeights();
IFVERBOSE(2) {
TRACE_ERR("The global weight vector looks like this: ");
TRACE_ERR(weights);
TRACE_ERR("\n");
}
// initialize output streams
// note: we can't just write to STDOUT or files
// because multithreading may return sentences in shuffled order
auto_ptr<OutputCollector> outputCollector; // for translations
auto_ptr<OutputCollector> nbestCollector; // for n-best lists
auto_ptr<OutputCollector> latticeSamplesCollector; //for lattice samples
auto_ptr<ofstream> nbestOut;
auto_ptr<ofstream> latticeSamplesOut;
size_t nbestSize = staticData.GetNBestSize();
string nbestFile = staticData.GetNBestFilePath();
bool output1best = true;
if (nbestSize) {
if (nbestFile == "-" || nbestFile == "/dev/stdout") {
// nbest to stdout, no 1-best
nbestCollector.reset(new OutputCollector());
output1best = false;
} else {
// nbest to file, 1-best to stdout
nbestOut.reset(new ofstream(nbestFile.c_str()));
if (!nbestOut->good()) {
TRACE_ERR("ERROR: Failed to open " << nbestFile << " for nbest lists" << endl);
exit(1);
}
nbestCollector.reset(new OutputCollector(nbestOut.get()));
}
}
size_t latticeSamplesSize = staticData.GetLatticeSamplesSize();
string latticeSamplesFile = staticData.GetLatticeSamplesFilePath();
if (latticeSamplesSize) {
if (latticeSamplesFile == "-" || latticeSamplesFile == "/dev/stdout") {
latticeSamplesCollector.reset(new OutputCollector());
output1best = false;
} else {
latticeSamplesOut.reset(new ofstream(latticeSamplesFile.c_str()));
if (!latticeSamplesOut->good()) {
TRACE_ERR("ERROR: Failed to open " << latticeSamplesFile << " for lattice samples" << endl);
exit(1);
}
latticeSamplesCollector.reset(new OutputCollector(latticeSamplesOut.get()));
}
}
if (output1best) {
outputCollector.reset(new OutputCollector());
}
// initialize stream for word graph (aka: output lattice)
auto_ptr<OutputCollector> wordGraphCollector;
if (staticData.GetOutputWordGraph()) {
wordGraphCollector.reset(new OutputCollector(&(ioWrapper->GetOutputWordGraphStream())));
}
// initialize stream for search graph
// note: this is essentially the same as above, but in a different format
auto_ptr<OutputCollector> searchGraphCollector;
if (staticData.GetOutputSearchGraph()) {
searchGraphCollector.reset(new OutputCollector(&(ioWrapper->GetOutputSearchGraphStream())));
}
// initialize stram for details about the decoder run
auto_ptr<OutputCollector> detailedTranslationCollector;
if (staticData.IsDetailedTranslationReportingEnabled()) {
detailedTranslationCollector.reset(new OutputCollector(&(ioWrapper->GetDetailedTranslationReportingStream())));
}
// initialize stram for word alignment between input and output
auto_ptr<OutputCollector> alignmentInfoCollector;
if (!staticData.GetAlignmentOutputFile().empty()) {
alignmentInfoCollector.reset(new OutputCollector(ioWrapper->GetAlignmentOutputStream()));
}
//initialise stream for unknown (oov) words
auto_ptr<OutputCollector> unknownsCollector;
auto_ptr<ofstream> unknownsStream;
if (!staticData.GetOutputUnknownsFile().empty()) {
unknownsStream.reset(new ofstream(staticData.GetOutputUnknownsFile().c_str()));
if (!unknownsStream->good()) {
TRACE_ERR("Unable to open " << staticData.GetOutputUnknownsFile() << " for unknowns");
exit(1);
}
unknownsCollector.reset(new OutputCollector(unknownsStream.get()));
}
#ifdef WITH_THREADS
ThreadPool pool(staticData.ThreadCount());
#endif
// main loop over set of input sentences
InputType* source = NULL;
size_t lineCount = 0;
while(ReadInput(*ioWrapper,staticData.GetInputType(),source)) {
IFVERBOSE(1) {
ResetUserTime();
}
// set up task of translating one sentence
TranslationTask* task =
new TranslationTask(lineCount,source, outputCollector.get(),
nbestCollector.get(),
latticeSamplesCollector.get(),
wordGraphCollector.get(),
searchGraphCollector.get(),
detailedTranslationCollector.get(),
alignmentInfoCollector.get(),
unknownsCollector.get() );
// execute task
#ifdef WITH_THREADS
pool.Submit(task);
#else
task->Run();
delete task;
#endif
source = NULL; //make sure it doesn't get deleted
++lineCount;
}
// we are done, finishing up
#ifdef WITH_THREADS
pool.Stop(true); //flush remaining jobs
#endif
} catch (const std::exception &e) {
std::cerr << "Exception: " << e.what() << std::endl;
return EXIT_FAILURE;
}
IFVERBOSE(1) util::PrintUsage(std::cerr);
#ifndef EXIT_RETURN
//This avoids that destructors are called (it can take a long time)
exit(EXIT_SUCCESS);
#else
return EXIT_SUCCESS;
#endif
}
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