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// $Id$
#ifndef moses_ConfusionNet_h
#define moses_ConfusionNet_h
#include <vector>
#include <iostream>
#include "Word.h"
#include "InputType.h"
#include "NonTerminal.h"
#include "util/exception.hh"
namespace Moses
{
class FactorCollection;
class TranslationOptionCollection;
class Sentence;
class TranslationTask;
/** An input to the decoder where each position can be 1 of a number of words,
* each with an associated probability. Compared with a sentence, where each position is a word
*/
class ConfusionNet : public InputType
{
public:
typedef std::vector<std::pair<Word, ScorePair > > Column;
protected:
std::vector<Column> data;
NonTerminalSet m_defaultLabelSet;
bool ReadFormat0(std::istream&,const std::vector<FactorType>& factorOrder);
bool ReadFormat1(std::istream&,const std::vector<FactorType>& factorOrder);
void String2Word(const std::string& s,Word& w,const std::vector<FactorType>& factorOrder);
public:
ConfusionNet();
virtual ~ConfusionNet();
ConfusionNet(Sentence const& s);
InputTypeEnum GetType() const {
return ConfusionNetworkInput;
}
const Column& GetColumn(size_t i) const {
UTIL_THROW_IF2(i >= data.size(),
"Out of bounds. Trying to access " << i << " when vector only contains " << data.size());
return data[i];
}
const Column& operator[](size_t i) const {
return GetColumn(i);
}
virtual size_t GetColumnIncrement(size_t i, size_t j) const; //! returns 1 for CNs
bool Empty() const {
return data.empty();
}
size_t GetSize() const {
return data.size();
}
void Clear() {
data.clear();
}
bool ReadF(std::istream&,const std::vector<FactorType>& factorOrder,int format=0);
virtual void Print(std::ostream&) const;
int Read(std::istream& in,const std::vector<FactorType>& factorOrder,
AllOptions const& opts);
Phrase GetSubString(const Range&) const; //TODO not defined
std::string GetStringRep(const std::vector<FactorType> factorsToPrint) const; //TODO not defined
const Word& GetWord(size_t pos) const;
TranslationOptionCollection*
CreateTranslationOptionCollection(ttasksptr const& ttask) const;
const NonTerminalSet &GetLabelSet(size_t /*startPos*/, size_t /*endPos*/) const {
return m_defaultLabelSet;
}
};
std::ostream& operator<<(std::ostream& out,const ConfusionNet& cn);
}
#endif
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