mirror of
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324 lines
10 KiB
C++
324 lines
10 KiB
C++
// $Id$
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// vim:tabstop=2
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/***********************************************************************
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Moses - factored phrase-based language decoder
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Copyright (C) 2006 University of Edinburgh
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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***********************************************************************/
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#include <stdexcept>
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#include <boost/algorithm/string.hpp>
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#include "Sentence.h"
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#include "TranslationOptionCollectionText.h"
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#include "StaticData.h"
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#include "ChartTranslationOptions.h"
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#include "Util.h"
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#include "XmlOption.h"
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#include "FactorCollection.h"
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using namespace std;
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namespace Moses
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{
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Sentence::Sentence()
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: Phrase(0)
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, InputType()
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{
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const StaticData& staticData = StaticData::Instance();
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if (staticData.IsChart()) {
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m_defaultLabelSet.insert(StaticData::Instance().GetInputDefaultNonTerminal());
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}
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}
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Sentence::~Sentence()
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{
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RemoveAllInColl(m_xmlOptions);
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}
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int Sentence::Read(std::istream& in,const std::vector<FactorType>& factorOrder)
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{
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const std::string& factorDelimiter = StaticData::Instance().GetFactorDelimiter();
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std::string line;
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std::map<std::string, std::string> meta;
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if (getline(in, line, '\n').eof())
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return 0;
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//get covered words - if continual-partial-translation is switched on, parse input
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const StaticData &staticData = StaticData::Instance();
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m_frontSpanCoveredLength = 0;
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m_sourceCompleted.resize(0);
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if (staticData.ContinuePartialTranslation()) {
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string initialTargetPhrase;
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string sourceCompletedStr;
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int loc1 = line.find( "|||", 0 );
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int loc2 = line.find( "|||", loc1 + 3 );
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if (loc1 > -1 && loc2 > -1) {
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initialTargetPhrase = line.substr(0, loc1);
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sourceCompletedStr = line.substr(loc1 + 3, loc2 - loc1 - 3);
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line = line.substr(loc2 + 3);
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sourceCompletedStr = Trim(sourceCompletedStr);
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initialTargetPhrase = Trim(initialTargetPhrase);
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m_initialTargetPhrase = initialTargetPhrase;
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int len = sourceCompletedStr.size();
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m_sourceCompleted.resize(len);
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int contiguous = 1;
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for (int i = 0; i < len; ++i) {
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if (sourceCompletedStr.at(i) == '1') {
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m_sourceCompleted[i] = true;
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if (contiguous)
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m_frontSpanCoveredLength ++;
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} else {
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m_sourceCompleted[i] = false;
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contiguous = 0;
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}
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}
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}
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}
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// remove extra spaces
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line = Trim(line);
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// if sentences is specified as "<seg id=1> ... </seg>", extract id
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meta = ProcessAndStripSGML(line);
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if (meta.find("id") != meta.end()) {
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this->SetTranslationId(atol(meta["id"].c_str()));
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}
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if (meta.find("docid") != meta.end()) {
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this->SetDocumentId(atol(meta["docid"].c_str()));
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this->SetUseTopicId(false);
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this->SetUseTopicIdAndProb(false);
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}
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if (meta.find("topic") != meta.end()) {
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vector<string> topic_params;
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boost::split(topic_params, meta["topic"], boost::is_any_of("\t "));
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if (topic_params.size() == 1) {
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this->SetTopicId(atol(topic_params[0].c_str()));
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this->SetUseTopicId(true);
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this->SetUseTopicIdAndProb(false);
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} else {
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this->SetTopicIdAndProb(topic_params);
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this->SetUseTopicId(false);
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this->SetUseTopicIdAndProb(true);
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}
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}
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if (meta.find("weight-setting") != meta.end()) {
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this->SetWeightSetting(meta["weight-setting"]);
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this->SetSpecifiesWeightSetting(true);
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} else {
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this->SetSpecifiesWeightSetting(false);
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}
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// parse XML markup in translation line
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//const StaticData &staticData = StaticData::Instance();
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std::vector< size_t > xmlWalls;
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std::vector< std::pair<size_t, std::string> > placeholders;
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if (staticData.GetXmlInputType() != XmlPassThrough) {
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int offset = 0;
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if (staticData.IsChart()) {
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offset = 1;
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}
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if (!ProcessAndStripXMLTags(line, m_xmlOptions, m_reorderingConstraint, xmlWalls, placeholders,
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offset,
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staticData.GetXmlBrackets().first,
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staticData.GetXmlBrackets().second)) {
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const string msg("Unable to parse XML in line: " + line);
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TRACE_ERR(msg << endl);
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throw runtime_error(msg);
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}
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}
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Phrase::CreateFromString(Input, factorOrder, line, factorDelimiter, NULL);
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// placeholders
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ProcessPlaceholders(placeholders);
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if (staticData.IsChart()) {
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InitStartEndWord();
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}
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//now that we have final word positions in phrase (from CreateFromString),
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//we can make input phrase objects to go with our XmlOptions and create TranslationOptions
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//only fill the vector if we are parsing XML
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if (staticData.GetXmlInputType() != XmlPassThrough ) {
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for (size_t i=0; i<GetSize(); i++) {
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m_xmlCoverageMap.push_back(false);
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}
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//iterXMLOpts will be empty for XmlIgnore
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//look at each column
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for(std::vector<XmlOption*>::const_iterator iterXmlOpts = m_xmlOptions.begin();
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iterXmlOpts != m_xmlOptions.end(); iterXmlOpts++) {
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const XmlOption *xmlOption = *iterXmlOpts;
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const WordsRange &range = xmlOption->range;
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for(size_t j=range.GetStartPos(); j<=range.GetEndPos(); j++) {
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m_xmlCoverageMap[j]=true;
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}
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}
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}
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// reordering walls and zones
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m_reorderingConstraint.InitializeWalls( GetSize() );
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// set reordering walls, if "-monotone-at-punction" is set
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if (staticData.UseReorderingConstraint() && GetSize()>0) {
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m_reorderingConstraint.SetMonotoneAtPunctuation( GetSubString( WordsRange(0,GetSize()-1 ) ) );
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}
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// set walls obtained from xml
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for(size_t i=0; i<xmlWalls.size(); i++)
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if( xmlWalls[i] < GetSize() ) // no buggy walls, please
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m_reorderingConstraint.SetWall( xmlWalls[i], true );
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m_reorderingConstraint.FinalizeWalls();
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return 1;
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}
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void Sentence::ProcessPlaceholders(const std::vector< std::pair<size_t, std::string> > &placeholders)
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{
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FactorType placeholderFactor = StaticData::Instance().GetPlaceholderFactor();
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if (placeholderFactor == NOT_FOUND) {
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return;
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}
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for (size_t i = 0; i < placeholders.size(); ++i) {
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size_t pos = placeholders[i].first;
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const string &str = placeholders[i].second;
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const Factor *factor = FactorCollection::Instance().AddFactor(str);
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Word &word = Phrase::GetWord(pos);
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word[placeholderFactor] = factor;
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}
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}
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TranslationOptionCollection*
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Sentence::CreateTranslationOptionCollection() const
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{
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size_t maxNoTransOptPerCoverage = StaticData::Instance().GetMaxNoTransOptPerCoverage();
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float transOptThreshold = StaticData::Instance().GetTranslationOptionThreshold();
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TranslationOptionCollection *rv= new TranslationOptionCollectionText(*this, maxNoTransOptPerCoverage, transOptThreshold);
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assert(rv);
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return rv;
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}
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void Sentence::Print(std::ostream& out) const
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{
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out<<*static_cast<Phrase const*>(this);
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}
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bool Sentence::XmlOverlap(size_t startPos, size_t endPos) const
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{
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for (size_t pos = startPos; pos <= endPos ; pos++) {
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if (pos < m_xmlCoverageMap.size() && m_xmlCoverageMap[pos]) {
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return true;
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}
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}
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return false;
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}
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void Sentence::GetXmlTranslationOptions(std::vector <TranslationOption*> &list) const
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{
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for (std::vector<XmlOption*>::const_iterator iterXMLOpts = m_xmlOptions.begin();
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iterXMLOpts != m_xmlOptions.end(); ++iterXMLOpts) {
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const XmlOption &xmlOption = **iterXMLOpts;
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const WordsRange &range = xmlOption.range;
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const TargetPhrase &targetPhrase = xmlOption.targetPhrase;
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TranslationOption *transOpt = new TranslationOption(range, targetPhrase);
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list.push_back(transOpt);
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}
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}
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void Sentence::GetXmlTranslationOptions(std::vector <TranslationOption*> &list, size_t startPos, size_t endPos) const
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{
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//iterate over XmlOptions list, find exact source/target matches
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for (std::vector<XmlOption*>::const_iterator iterXMLOpts = m_xmlOptions.begin();
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iterXMLOpts != m_xmlOptions.end(); ++iterXMLOpts) {
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const XmlOption &xmlOption = **iterXMLOpts;
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const WordsRange &range = xmlOption.range;
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if (startPos == range.GetStartPos()
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&& endPos == range.GetEndPos()) {
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const TargetPhrase &targetPhrase = xmlOption.targetPhrase;
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TranslationOption *transOpt = new TranslationOption(range, targetPhrase);
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list.push_back(transOpt);
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}
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}
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}
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std::vector <ChartTranslationOptions*> Sentence::GetXmlChartTranslationOptions() const
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{
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const StaticData &staticData = StaticData::Instance();
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std::vector <ChartTranslationOptions*> ret;
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// XML Options
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// this code is a copy of the 1 in Sentence.
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//only fill the vector if we are parsing XML
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if (staticData.GetXmlInputType() != XmlPassThrough ) {
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//TODO: needed to handle exclusive
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//for (size_t i=0; i<GetSize(); i++) {
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// m_xmlCoverageMap.push_back(false);
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//}
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//iterXMLOpts will be empty for XmlIgnore
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//look at each column
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for(std::vector<XmlOption*>::const_iterator iterXmlOpts = m_xmlOptions.begin();
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iterXmlOpts != m_xmlOptions.end(); iterXmlOpts++) {
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const XmlOption &xmlOption = **iterXmlOpts;
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TargetPhrase *targetPhrase = new TargetPhrase(xmlOption.targetPhrase);
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WordsRange *range = new WordsRange(xmlOption.range);
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const StackVec emptyStackVec; // hmmm... maybe dangerous, but it is never consulted
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TargetPhraseCollection *tpc = new TargetPhraseCollection;
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tpc->Add(targetPhrase);
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ChartTranslationOptions *transOpt = new ChartTranslationOptions(*tpc, emptyStackVec, *range, 0.0f);
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ret.push_back(transOpt);
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//TODO: needed to handle exclusive
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//for(size_t j=transOpt->GetSourceWordsRange().GetStartPos(); j<=transOpt->GetSourceWordsRange().GetEndPos(); j++) {
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// m_xmlCoverageMap[j]=true;
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//}
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}
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}
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return ret;
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}
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void Sentence::CreateFromString(const std::vector<FactorType> &factorOrder
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, const std::string &phraseString
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, const std::string &factorDelimiter)
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{
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Phrase::CreateFromString(Input, factorOrder, phraseString, factorDelimiter, NULL);
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}
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}
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