mirror of
https://github.com/moses-smt/mosesdecoder.git
synced 2024-12-25 21:03:22 +03:00
361 lines
12 KiB
C++
361 lines
12 KiB
C++
// $Id$
|
|
|
|
#include "TreeInput.h"
|
|
#include "StaticData.h"
|
|
#include "Util.h"
|
|
#include "XmlOption.h"
|
|
#include "FactorCollection.h"
|
|
#include "moses/TranslationModel/PhraseDictionary.h"
|
|
|
|
using namespace std;
|
|
|
|
namespace Moses
|
|
{
|
|
|
|
/**
|
|
* Process a sentence with xml annotation
|
|
* Xml tags may specifiy additional/replacing translation options
|
|
* and reordering constraints
|
|
*
|
|
* \param line in: sentence, out: sentence without the xml
|
|
* \param res vector with translation options specified by xml
|
|
* \param reorderingConstraint reordering constraint zones specified by xml
|
|
* \param walls reordering constraint walls specified by xml
|
|
*/
|
|
bool TreeInput::ProcessAndStripXMLTags(string &line, std::vector<XMLParseOutput> &sourceLabels, std::vector<XmlOption*> &xmlOptions)
|
|
{
|
|
//parse XML markup in translation line
|
|
|
|
// no xml tag? we're done.
|
|
if (line.find_first_of('<') == string::npos) {
|
|
return true;
|
|
}
|
|
|
|
// hack. What pt should XML trans opt be assigned to?
|
|
PhraseDictionary *firstPt = NULL;
|
|
if (PhraseDictionary::GetColl().size() == 0) {
|
|
firstPt = PhraseDictionary::GetColl()[0];
|
|
}
|
|
|
|
// break up input into a vector of xml tags and text
|
|
// example: (this), (<b>), (is a), (</b>), (test .)
|
|
vector<string> xmlTokens = TokenizeXml(line);
|
|
|
|
// we need to store opened tags, until they are closed
|
|
// tags are stored as tripled (tagname, startpos, contents)
|
|
typedef pair< string, pair< size_t, string > > OpenedTag;
|
|
vector< OpenedTag > tagStack; // stack that contains active opened tags
|
|
|
|
string cleanLine; // return string (text without xml)
|
|
size_t wordPos = 0; // position in sentence (in terms of number of words)
|
|
|
|
// keep this handy for later
|
|
const vector<FactorType> &outputFactorOrder = StaticData::Instance().GetOutputFactorOrder();
|
|
// const string &factorDelimiter = StaticData::Instance().GetFactorDelimiter();
|
|
|
|
// loop through the tokens
|
|
for (size_t xmlTokenPos = 0 ; xmlTokenPos < xmlTokens.size() ; xmlTokenPos++) {
|
|
// not a xml tag, but regular text (may contain many words)
|
|
if(!isXmlTag(xmlTokens[xmlTokenPos])) {
|
|
// add a space at boundary, if necessary
|
|
if (cleanLine.size()>0 &&
|
|
cleanLine[cleanLine.size() - 1] != ' ' &&
|
|
xmlTokens[xmlTokenPos][0] != ' ') {
|
|
cleanLine += " ";
|
|
}
|
|
cleanLine += xmlTokens[xmlTokenPos]; // add to output
|
|
wordPos = Tokenize(cleanLine).size(); // count all the words
|
|
}
|
|
|
|
// process xml tag
|
|
else {
|
|
// *** get essential information about tag ***
|
|
|
|
// strip extra boundary spaces and "<" and ">"
|
|
string tag = Trim(TrimXml(xmlTokens[xmlTokenPos]));
|
|
VERBOSE(3,"XML TAG IS: " << tag << std::endl);
|
|
|
|
if (tag.size() == 0) {
|
|
TRACE_ERR("ERROR: empty tag name: " << line << endl);
|
|
return false;
|
|
}
|
|
|
|
// check if unary (e.g., "<wall/>")
|
|
bool isUnary = ( tag[tag.size() - 1] == '/' );
|
|
|
|
// check if opening tag (e.g. "<a>", not "</a>")g
|
|
bool isClosed = ( tag[0] == '/' );
|
|
bool isOpen = !isClosed;
|
|
|
|
if (isClosed && isUnary) {
|
|
TRACE_ERR("ERROR: can't have both closed and unary tag <" << tag << ">: " << line << endl);
|
|
return false;
|
|
}
|
|
|
|
if (isClosed)
|
|
tag = tag.substr(1); // remove "/" at the beginning
|
|
if (isUnary)
|
|
tag = tag.substr(0,tag.size()-1); // remove "/" at the end
|
|
|
|
// find the tag name and contents
|
|
string::size_type endOfName = tag.find_first_of(' ');
|
|
string tagName = tag;
|
|
string tagContent = "";
|
|
if (endOfName != string::npos) {
|
|
tagName = tag.substr(0,endOfName);
|
|
tagContent = tag.substr(endOfName+1);
|
|
}
|
|
|
|
// *** process new tag ***
|
|
|
|
if (isOpen || isUnary) {
|
|
// put the tag on the tag stack
|
|
OpenedTag openedTag = make_pair( tagName, make_pair( wordPos, tagContent ) );
|
|
tagStack.push_back( openedTag );
|
|
VERBOSE(3,"XML TAG " << tagName << " (" << tagContent << ") added to stack, now size " << tagStack.size() << endl);
|
|
}
|
|
|
|
// *** process completed tag ***
|
|
|
|
if (isClosed || isUnary) {
|
|
// pop last opened tag from stack;
|
|
if (tagStack.size() == 0) {
|
|
TRACE_ERR("ERROR: tag " << tagName << " closed, but not opened" << ":" << line << endl);
|
|
return false;
|
|
}
|
|
OpenedTag openedTag = tagStack.back();
|
|
tagStack.pop_back();
|
|
|
|
// tag names have to match
|
|
if (openedTag.first != tagName) {
|
|
TRACE_ERR("ERROR: tag " << openedTag.first << " closed by tag " << tagName << ": " << line << endl );
|
|
return false;
|
|
}
|
|
|
|
// assemble remaining information about tag
|
|
size_t startPos = openedTag.second.first;
|
|
string tagContent = openedTag.second.second;
|
|
size_t endPos = wordPos;
|
|
|
|
// span attribute overwrites position
|
|
string span = ParseXmlTagAttribute(tagContent,"span");
|
|
if (! span.empty()) {
|
|
vector<string> ij = Tokenize(span, "-");
|
|
if (ij.size() != 1 && ij.size() != 2) {
|
|
TRACE_ERR("ERROR: span attribute must be of the form \"i-j\" or \"i\": " << line << endl);
|
|
return false;
|
|
}
|
|
startPos = atoi(ij[0].c_str());
|
|
if (ij.size() == 1) endPos = startPos + 1;
|
|
else endPos = atoi(ij[1].c_str()) + 1;
|
|
}
|
|
|
|
VERBOSE(3,"XML TAG " << tagName << " (" << tagContent << ") spanning " << startPos << " to " << (endPos-1) << " complete, commence processing" << endl);
|
|
|
|
if (startPos == endPos) {
|
|
TRACE_ERR("WARNING: tag " << tagName << " span is empty. Ignoring: " << line << endl);
|
|
continue;
|
|
} else if (startPos > endPos) {
|
|
TRACE_ERR("ERROR: tag " << tagName << " startPos > endPos: " << line << endl);
|
|
return false;
|
|
}
|
|
|
|
// may be either a input span label ("label"), or a specified output translation "translation"
|
|
string label = ParseXmlTagAttribute(tagContent,"label");
|
|
string translation = ParseXmlTagAttribute(tagContent,"translation");
|
|
|
|
// specified label
|
|
if (translation.length() == 0 && label.length() > 0) {
|
|
WordsRange range(startPos,endPos-1); // really?
|
|
XMLParseOutput item(label, range);
|
|
sourceLabels.push_back(item);
|
|
}
|
|
|
|
// specified translations -> vector of phrases, separated by "||"
|
|
if (translation.length() > 0 && StaticData::Instance().GetXmlInputType() != XmlIgnore) {
|
|
vector<string> altTexts = TokenizeMultiCharSeparator(translation, "||");
|
|
vector<string> altLabel = TokenizeMultiCharSeparator(label, "||");
|
|
vector<string> altProbs = TokenizeMultiCharSeparator(ParseXmlTagAttribute(tagContent,"prob"), "||");
|
|
//TRACE_ERR("number of translations: " << altTexts.size() << endl);
|
|
for (size_t i=0; i<altTexts.size(); ++i) {
|
|
// set target phrase
|
|
TargetPhrase targetPhrase(firstPt);
|
|
// targetPhrase.CreateFromString(Output, outputFactorOrder,altTexts[i],factorDelimiter, NULL);
|
|
targetPhrase.CreateFromString(Output, outputFactorOrder,altTexts[i], NULL);
|
|
|
|
// set constituent label
|
|
string targetLHSstr;
|
|
if (altLabel.size() > i && altLabel[i].size() > 0) {
|
|
targetLHSstr = altLabel[i];
|
|
} else {
|
|
const UnknownLHSList &lhsList = StaticData::Instance().GetUnknownLHS();
|
|
UnknownLHSList::const_iterator iterLHS = lhsList.begin();
|
|
targetLHSstr = iterLHS->first;
|
|
}
|
|
Word *targetLHS = new Word(true);
|
|
targetLHS->CreateFromString(Output, outputFactorOrder, targetLHSstr, true);
|
|
UTIL_THROW_IF2(targetLHS->GetFactor(0) == NULL,
|
|
"Null factor left-hand-side");
|
|
targetPhrase.SetTargetLHS(targetLHS);
|
|
|
|
// not tested
|
|
Phrase sourcePhrase = this->GetSubString(WordsRange(startPos,endPos-1));
|
|
|
|
// get probability
|
|
float probValue = 1;
|
|
if (altProbs.size() > i && altProbs[i].size() > 0) {
|
|
probValue = Scan<float>(altProbs[i]);
|
|
}
|
|
// convert from prob to log-prob
|
|
float scoreValue = FloorScore(TransformScore(probValue));
|
|
targetPhrase.SetXMLScore(scoreValue);
|
|
targetPhrase.EvaluateInIsolation(sourcePhrase);
|
|
|
|
// set span and create XmlOption
|
|
WordsRange range(startPos+1,endPos);
|
|
XmlOption *option = new XmlOption(range,targetPhrase);
|
|
assert(option);
|
|
xmlOptions.push_back(option);
|
|
|
|
VERBOSE(2,"xml translation = [" << range << "] " << targetLHSstr << " -> " << altTexts[i] << " prob: " << probValue << endl);
|
|
}
|
|
altTexts.clear();
|
|
altProbs.clear();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
// we are done. check if there are tags that are still open
|
|
if (tagStack.size() > 0) {
|
|
TRACE_ERR("ERROR: some opened tags were never closed: " << line << endl);
|
|
return false;
|
|
}
|
|
|
|
// return de-xml'ed sentence in line
|
|
line = cleanLine;
|
|
return true;
|
|
}
|
|
|
|
//! populate this InputType with data from in stream
|
|
int TreeInput::Read(std::istream& in,const std::vector<FactorType>& factorOrder)
|
|
{
|
|
const StaticData &staticData = StaticData::Instance();
|
|
|
|
string line;
|
|
if (getline(in, line, '\n').eof())
|
|
return 0;
|
|
// remove extra spaces
|
|
//line = Trim(line);
|
|
|
|
std::vector<XMLParseOutput> sourceLabels;
|
|
ProcessAndStripXMLTags(line, sourceLabels, m_xmlOptions);
|
|
|
|
// do words 1st - hack
|
|
stringstream strme;
|
|
strme << line << endl;
|
|
|
|
Sentence::Read(strme, factorOrder);
|
|
|
|
// size input chart
|
|
size_t sourceSize = GetSize();
|
|
m_sourceChart.resize(sourceSize);
|
|
|
|
for (size_t pos = 0; pos < sourceSize; ++pos) {
|
|
m_sourceChart[pos].resize(sourceSize - pos);
|
|
}
|
|
|
|
// do source labels
|
|
vector<XMLParseOutput>::const_iterator iterLabel;
|
|
for (iterLabel = sourceLabels.begin(); iterLabel != sourceLabels.end(); ++iterLabel) {
|
|
const XMLParseOutput &labelItem = *iterLabel;
|
|
const WordsRange &range = labelItem.m_range;
|
|
const string &label = labelItem.m_label;
|
|
AddChartLabel(range.GetStartPos() + 1, range.GetEndPos() + 1, label, factorOrder);
|
|
}
|
|
|
|
// default label
|
|
for (size_t startPos = 0; startPos < sourceSize; ++startPos) {
|
|
for (size_t endPos = startPos; endPos < sourceSize; ++endPos) {
|
|
NonTerminalSet &list = GetLabelSet(startPos, endPos);
|
|
if (list.size() == 0 || !staticData.GetDefaultNonTermOnlyForEmptyRange()) {
|
|
AddChartLabel(startPos, endPos, staticData.GetInputDefaultNonTerminal(), factorOrder);
|
|
}
|
|
}
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
//! Output debugging info to stream out
|
|
void TreeInput::Print(std::ostream &out) const
|
|
{
|
|
out << *this << "\n";
|
|
}
|
|
|
|
//! create trans options specific to this InputType
|
|
TranslationOptionCollection* TreeInput::CreateTranslationOptionCollection() const
|
|
{
|
|
|
|
return NULL;
|
|
}
|
|
|
|
void TreeInput::AddChartLabel(size_t startPos, size_t endPos, const Word &label
|
|
, const std::vector<FactorType>& /* factorOrder */)
|
|
{
|
|
UTIL_THROW_IF2(!label.IsNonTerminal(),
|
|
"Label must be a non-terminal");
|
|
|
|
SourceLabelOverlap overlapType = StaticData::Instance().GetSourceLabelOverlap();
|
|
NonTerminalSet &list = GetLabelSet(startPos, endPos);
|
|
switch (overlapType) {
|
|
case SourceLabelOverlapAdd:
|
|
list.insert(label);
|
|
break;
|
|
case SourceLabelOverlapReplace:
|
|
if (list.size() > 0) // replace existing label
|
|
list.clear();
|
|
list.insert(label);
|
|
break;
|
|
case SourceLabelOverlapDiscard:
|
|
if (list.size() == 0)
|
|
list.insert(label);
|
|
break;
|
|
}
|
|
}
|
|
|
|
void TreeInput::AddChartLabel(size_t startPos, size_t endPos, const string &label
|
|
, const std::vector<FactorType>& factorOrder)
|
|
{
|
|
Word word(true);
|
|
const Factor *factor = FactorCollection::Instance().AddFactor(Input, factorOrder[0], label, true); // TODO - no factors
|
|
word.SetFactor(0, factor);
|
|
|
|
AddChartLabel(startPos, endPos, word, factorOrder);
|
|
}
|
|
|
|
std::ostream& operator<<(std::ostream &out, const TreeInput &input)
|
|
{
|
|
out<< static_cast<Phrase const&>(input) << " ||| ";
|
|
|
|
size_t size = input.GetSize();
|
|
for (size_t startPos = 0; startPos < size; ++startPos) {
|
|
for (size_t endPos = startPos; endPos < size; ++endPos) {
|
|
const NonTerminalSet &labelSet = input.GetLabelSet(startPos, endPos);
|
|
NonTerminalSet::const_iterator iter;
|
|
for (iter = labelSet.begin(); iter != labelSet.end(); ++iter) {
|
|
const Word &word = *iter;
|
|
UTIL_THROW_IF2(!word.IsNonTerminal(),
|
|
"Word must be a non-terminal");
|
|
out << "[" << startPos <<"," << endPos << "]="
|
|
<< word << "(" << word.IsNonTerminal() << ") ";
|
|
}
|
|
}
|
|
}
|
|
|
|
return out;
|
|
}
|
|
|
|
|
|
} // namespace
|
|
|