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#include <stdexcept>
#include "util/exception.hh"
#include "FeatureFunction.h"
#include "moses/Hypothesis.h"
#include "moses/Manager.h"
#include "moses/TranslationOption.h"
#include "moses/TranslationTask.h"
#include "moses/Util.h"
#include "moses/FF/DistortionScoreProducer.h"
#include <boost/foreach.hpp>
using namespace std;
namespace Moses
{
multiset<string> FeatureFunction::description_counts;
std::vector<FeatureFunction*> FeatureFunction::s_staticColl;
FeatureFunction &FeatureFunction::FindFeatureFunction(const std::string& name)
{
for (size_t i = 0; i < s_staticColl.size(); ++i) {
FeatureFunction &ff = *s_staticColl[i];
if (ff.GetScoreProducerDescription() == name) {
return ff;
}
}
throw "Unknown feature " + name;
}
void FeatureFunction::Destroy()
{
RemoveAllInColl(s_staticColl);
}
void FeatureFunction::SetupAll(TranslationTask const& ttask)
{
BOOST_FOREACH(FeatureFunction* ff, s_staticColl)
ff->Setup(ttask);
}
FeatureFunction::
FeatureFunction(const std::string& line, bool registerNow)
: m_tuneable(true)
, m_requireSortingAfterSourceContext(false)
, m_verbosity(std::numeric_limits<std::size_t>::max())
, m_numScoreComponents(1)
, m_index(0)
{
m_numTuneableComponents = m_numScoreComponents;
ParseLine(line);
// if (registerNow) Register(); // now done in FeatureFactory::DefaultSetup()
// TO DO: eliminate the registerNow parameter
}
FeatureFunction::FeatureFunction(size_t numScoreComponents, const std::string& line, bool registerNow)
: m_tuneable(true)
, m_requireSortingAfterSourceContext(false)
, m_verbosity(std::numeric_limits<std::size_t>::max())
, m_numScoreComponents(numScoreComponents)
, m_index(0)
{
m_numTuneableComponents = m_numScoreComponents;
ParseLine(line);
// if (registerNow) Register(); // now done in FeatureFactory::DefaultSetup()
// TO DO: eliminate the registerNow parameter
}
void
FeatureFunction::
Register(FeatureFunction* ff)
{
ScoreComponentCollection::RegisterScoreProducer(ff);
s_staticColl.push_back(ff);
}
FeatureFunction::~FeatureFunction() {}
void FeatureFunction::ParseLine(const std::string &line)
{
vector<string> toks = Tokenize(line);
UTIL_THROW_IF2(toks.empty(), "Empty line");
string nameStub = toks[0];
set<string> keys;
for (size_t i = 1; i < toks.size(); ++i) {
vector<string> args = TokenizeFirstOnly(toks[i], "=");
UTIL_THROW_IF2(args.size() != 2,
"Incorrect format for feature function arg: " << toks[i]);
pair<set<string>::iterator,bool> ret = keys.insert(args[0]);
UTIL_THROW_IF2(!ret.second, "Duplicate key in line " << line);
if (args[0] == "num-features") {
m_numScoreComponents = Scan<size_t>(args[1]);
m_numTuneableComponents = m_numScoreComponents;
} else if (args[0] == "name") {
m_description = args[1];
} else {
m_args.push_back(args);
}
}
// name
if (m_description == "") {
size_t index = description_counts.count(nameStub);
string descr = SPrint(nameStub) + SPrint(index);
description_counts.insert(nameStub);
m_description = descr;
}
}
void FeatureFunction::SetParameter(const std::string& key, const std::string& value)
{
if (key == "tuneable") {
m_tuneable = Scan<bool>(value);
} else if (key == "tuneable-components") {
UTIL_THROW_IF2(!m_tuneable, GetScoreProducerDescription()
<< ": tuneable-components cannot be set if tuneable=false");
SetTuneableComponents(value);
} else if (key == "require-sorting-after-source-context") {
m_requireSortingAfterSourceContext = Scan<bool>(value);
} else if (key == "verbosity") {
m_verbosity = Scan<size_t>(value);
} else if (key == "filterable") { //ignore
} else {
UTIL_THROW2(GetScoreProducerDescription() << ": Unknown argument " << key << "=" << value);
}
}
void FeatureFunction::ReadParameters()
{
while (!m_args.empty()) {
const vector<string> &args = m_args[0];
SetParameter(args[0], args[1]);
m_args.erase(m_args.begin());
}
}
std::vector<float> FeatureFunction::DefaultWeights() const
{
return std::vector<float>(this->m_numScoreComponents,1.0);
// UTIL_THROW2(GetScoreProducerDescription() << ": No default weights");
}
void FeatureFunction::SetTuneableComponents(const std::string& value)
{
std::vector<std::string> toks = Tokenize(value,",");
UTIL_THROW_IF2(toks.empty(), GetScoreProducerDescription()
<< ": Empty tuneable-components");
UTIL_THROW_IF2(toks.size()!=m_numScoreComponents, GetScoreProducerDescription()
<< ": tuneable-components value has to be a comma-separated list of "
<< m_numScoreComponents << " boolean values");
m_tuneableComponents.resize(m_numScoreComponents);
m_numTuneableComponents = m_numScoreComponents;
for (size_t i = 0; i < toks.size(); ++i) {
m_tuneableComponents[i] = Scan<bool>(toks[i]);
if (!m_tuneableComponents[i]) {
--m_numTuneableComponents;
}
}
}
// void
// FeatureFunction
// ::InitializeForInput(ttasksptr const& ttask)
// {
// InitializeForInput(*(ttask->GetSource().get()));
// }
void
FeatureFunction
::CleanUpAfterSentenceProcessing(ttasksptr const& ttask)
{
CleanUpAfterSentenceProcessing(*(ttask->GetSource().get()));
}
size_t
FeatureFunction
::GetIndex() const
{
return m_index;
}
/// set index
// @return index of the next FF
size_t
FeatureFunction
::SetIndex(size_t const idx)
{
m_index = idx;
return this->GetNumScoreComponents() + idx;
}
}
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