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#include "ff_basic.h"
#include "fast_lexical_cast.hpp"
#include "hg.h"
using namespace std;
// Hiero and Joshua use log_10(e) as the value, so I do to
WordPenalty::WordPenalty(const string& param) :
fid_(FD::Convert("WordPenalty")),
value_(-1.0 / log(10)) {
if (!param.empty()) {
cerr << "Warning WordPenalty ignoring parameter: " << param << endl;
}
}
void WordPenalty::TraversalFeaturesImpl(const SentenceMetadata& smeta,
const Hypergraph::Edge& edge,
const std::vector<const void*>& ant_states,
SparseVector<double>* features,
SparseVector<double>* estimated_features,
void* state) const {
(void) smeta;
(void) ant_states;
(void) state;
(void) estimated_features;
features->set_value(fid_, edge.rule_->EWords() * value_);
}
SourceWordPenalty::SourceWordPenalty(const string& param) :
fid_(FD::Convert("SourceWordPenalty")),
value_(-1.0 / log(10)) {
if (!param.empty()) {
cerr << "Warning SourceWordPenalty ignoring parameter: " << param << endl;
}
}
void SourceWordPenalty::TraversalFeaturesImpl(const SentenceMetadata& smeta,
const Hypergraph::Edge& edge,
const std::vector<const void*>& ant_states,
SparseVector<double>* features,
SparseVector<double>* estimated_features,
void* state) const {
(void) smeta;
(void) ant_states;
(void) state;
(void) estimated_features;
features->set_value(fid_, edge.rule_->FWords() * value_);
}
ArityPenalty::ArityPenalty(const std::string& param) {
string fname = "Arity_";
unsigned MAX=DEFAULT_MAX_ARITY;
using namespace boost;
if (!param.empty())
MAX=lexical_cast<unsigned>(param);
for (unsigned i = 0; i <= MAX; ++i) {
WordID fid=FD::Convert(fname+lexical_cast<string>(i));
fids_.push_back(fid);
}
// pretty up features vector in case FD was frozen. doesn't change anything
while (!fids_.empty() && fids_.back()==0) fids_.pop_back();
}
void ArityPenalty::TraversalFeaturesImpl(const SentenceMetadata& smeta,
const Hypergraph::Edge& edge,
const std::vector<const void*>& ant_states,
SparseVector<double>* features,
SparseVector<double>* estimated_features,
void* state) const {
(void) smeta;
(void) ant_states;
(void) state;
(void) estimated_features;
unsigned a=edge.Arity();
if (a < fids_.size()) features->set_value(fids_[a], 1.0);
}
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