wiki-cased / tools /mosesdecoder /mert /FeatureDataIterator.cpp

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/***********************************************************************
Moses - factored phrase-based language decoder
Copyright (C) 2011- 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
***********************************************************************/
#include <iostream>
#include <sstream>
#include <boost/functional/hash.hpp>

#include "util/file_piece.hh"
#include "util/tokenize_piece.hh"

#include "FeatureArray.h"
#include "FeatureDataIterator.h"


using namespace std;
using namespace util;

namespace MosesTuning
{


int ParseInt(const StringPiece& str )
{
  char* errIndex;
  //could wrap?
  int value = static_cast<int>(strtol(str.data(), &errIndex,10));
  if (errIndex == str.data()) {
    throw util::ParseNumberException(str);
  }
  return value;
}

float ParseFloat(const StringPiece& str)
{
  char* errIndex;
  float value = static_cast<float>(strtod(str.data(), &errIndex));
  if (errIndex == str.data()) {
    throw util::ParseNumberException(str);
  }
  return value;
}

bool operator==(FeatureDataItem const& item1, FeatureDataItem const& item2)
{
  return item1.dense==item1.dense && item1.sparse==item1.sparse;
}

size_t hash_value(FeatureDataItem const& item)
{
  size_t seed = 0;
  boost::hash_combine(seed,item.dense);
  boost::hash_combine(seed,item.sparse);
  return seed;
}


FeatureDataIterator::FeatureDataIterator() {}

FeatureDataIterator::FeatureDataIterator(const string& filename)
{
  m_in.reset(new FilePiece(filename.c_str()));
  readNext();
}

FeatureDataIterator::~FeatureDataIterator() {}

void FeatureDataIterator::readNext()
{
  m_next.clear();
  try {
    StringPiece marker = m_in->ReadDelimited();
    if (marker != StringPiece(FEATURES_TXT_BEGIN)) {
      throw FileFormatException(m_in->FileName(), marker.as_string());
    }
    // size_t sentenceId =
    m_in->ReadULong();
    size_t count = m_in->ReadULong();
    size_t length = m_in->ReadULong();
    m_in->ReadLine(); //discard rest of line
    for (size_t i = 0; i < count; ++i) {
      StringPiece line = m_in->ReadLine();
      m_next.push_back(FeatureDataItem());
      for (TokenIter<AnyCharacter, true> token(line, AnyCharacter(" \t")); token; ++token) {
        TokenIter<AnyCharacterLast,false> value(*token,AnyCharacterLast("="));
        if (!value) throw FileFormatException(m_in->FileName(), line.as_string());
        StringPiece first = *value;
        ++value;
        if (!value) {
          //regular feature
          float floatValue = ParseFloat(first);
          m_next.back().dense.push_back(floatValue);
        } else {
          //sparse feature
          StringPiece second = *value;
          float floatValue = ParseFloat(second);
          m_next.back().sparse.set(first.as_string(),floatValue);
        }
      }
      if (length != m_next.back().dense.size()) {
        throw FileFormatException(m_in->FileName(), line.as_string());
      }
    }
    StringPiece line = m_in->ReadLine();
    if (line != StringPiece(FEATURES_TXT_END)) {
      throw FileFormatException(m_in->FileName(), line.as_string());
    }
  } catch (EndOfFileException &e) {
    m_in.reset();
  }
}

void FeatureDataIterator::increment()
{
  readNext();
}

bool FeatureDataIterator::equal(const FeatureDataIterator& rhs) const
{
  if (!m_in && !rhs.m_in) {
    return true;
  } else if (!m_in) {
    return false;
  } else if (!rhs.m_in) {
    return false;
  } else {
    return m_in->FileName() == rhs.m_in->FileName() &&
           m_in->Offset() == rhs.m_in->Offset();
  }
}

const vector<FeatureDataItem>& FeatureDataIterator::dereference() const
{
  return m_next;
}

}

	/***********************************************************************
	Moses - factored phrase-based language decoder
	Copyright (C) 2011- 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
	***********************************************************************/
	#include <iostream>
	#include <sstream>
	#include <boost/functional/hash.hpp>

	#include "util/file_piece.hh"
	#include "util/tokenize_piece.hh"

	#include "FeatureArray.h"
	#include "FeatureDataIterator.h"


	using namespace std;
	using namespace util;

	namespace MosesTuning
	{


	int ParseInt(const StringPiece& str )
	{
	char* errIndex;
	//could wrap?
	int value = static_cast<int>(strtol(str.data(), &errIndex,10));
	if (errIndex == str.data()) {
	throw util::ParseNumberException(str);
	}
	return value;
	}

	float ParseFloat(const StringPiece& str)
	{
	char* errIndex;
	float value = static_cast<float>(strtod(str.data(), &errIndex));
	if (errIndex == str.data()) {
	throw util::ParseNumberException(str);
	}
	return value;
	}

	bool operator==(FeatureDataItem const& item1, FeatureDataItem const& item2)
	{
	return item1.dense==item1.dense && item1.sparse==item1.sparse;
	}

	size_t hash_value(FeatureDataItem const& item)
	{
	size_t seed = 0;
	boost::hash_combine(seed,item.dense);
	boost::hash_combine(seed,item.sparse);
	return seed;
	}


	FeatureDataIterator::FeatureDataIterator() {}

	FeatureDataIterator::FeatureDataIterator(const string& filename)
	{
	m_in.reset(new FilePiece(filename.c_str()));
	readNext();
	}

	FeatureDataIterator::~FeatureDataIterator() {}

	void FeatureDataIterator::readNext()
	{
	m_next.clear();
	try {
	StringPiece marker = m_in->ReadDelimited();
	if (marker != StringPiece(FEATURES_TXT_BEGIN)) {
	throw FileFormatException(m_in->FileName(), marker.as_string());
	}
	// size_t sentenceId =
	m_in->ReadULong();
	size_t count = m_in->ReadULong();
	size_t length = m_in->ReadULong();
	m_in->ReadLine(); //discard rest of line
	for (size_t i = 0; i < count; ++i) {
	StringPiece line = m_in->ReadLine();
	m_next.push_back(FeatureDataItem());
	for (TokenIter<AnyCharacter, true> token(line, AnyCharacter(" \t")); token; ++token) {
	TokenIter<AnyCharacterLast,false> value(*token,AnyCharacterLast("="));
	if (!value) throw FileFormatException(m_in->FileName(), line.as_string());
	StringPiece first = *value;
	++value;
	if (!value) {
	//regular feature
	float floatValue = ParseFloat(first);
	m_next.back().dense.push_back(floatValue);
	} else {
	//sparse feature
	StringPiece second = *value;
	float floatValue = ParseFloat(second);
	m_next.back().sparse.set(first.as_string(),floatValue);
	}
	}
	if (length != m_next.back().dense.size()) {
	throw FileFormatException(m_in->FileName(), line.as_string());
	}
	}
	StringPiece line = m_in->ReadLine();
	if (line != StringPiece(FEATURES_TXT_END)) {
	throw FileFormatException(m_in->FileName(), line.as_string());
	}
	} catch (EndOfFileException &e) {
	m_in.reset();
	}
	}

	void FeatureDataIterator::increment()
	{
	readNext();
	}

	bool FeatureDataIterator::equal(const FeatureDataIterator& rhs) const
	{
	if (!m_in && !rhs.m_in) {
	return true;
	} else if (!m_in) {
	return false;
	} else if (!rhs.m_in) {
	return false;
	} else {
	return m_in->FileName() == rhs.m_in->FileName() &&
	m_in->Offset() == rhs.m_in->Offset();
	}
	}

	const vector<FeatureDataItem>& FeatureDataIterator::dereference() const
	{
	return m_next;
	}

	}