mirror of
https://github.com/moses-smt/mosesdecoder.git
synced 2025-01-08 20:46:59 +03:00
a9c8f44896
This is one of those little chores in managing a long-lived C++ project: standard C headers like stdio.h and math.h now have their own place in the C++ standard as resp. cstdio, cmath, and so on. In this branch the #include names are updated for the moses/ subdirectory; more branches to follow. C++11 adds cstdint, but to support compilation with the previous standard, that change is left for later.
125 lines
4.2 KiB
C++
125 lines
4.2 KiB
C++
#include "moses/PP/SourceLabelsPhraseProperty.h"
|
|
#include <iostream>
|
|
#include <cstdio>
|
|
#include <cstdlib>
|
|
#include <sstream>
|
|
#include <string>
|
|
#include <queue>
|
|
#include <cassert>
|
|
#include <limits>
|
|
|
|
namespace Moses
|
|
{
|
|
|
|
void SourceLabelsPhraseProperty::ProcessValue(const std::string &value)
|
|
{
|
|
std::istringstream tokenizer(value);
|
|
|
|
if (! (tokenizer >> m_nNTs)) { // first token: number of non-terminals (incl. left-hand side)
|
|
UTIL_THROW2("SourceLabelsPhraseProperty: Not able to read number of non-terminals. Flawed property? " << value);
|
|
}
|
|
assert( m_nNTs > 0 );
|
|
|
|
if (! (tokenizer >> m_totalCount)) { // second token: overall rule count
|
|
UTIL_THROW2("SourceLabelsPhraseProperty: Not able to read overall rule count. Flawed property? " << value);
|
|
}
|
|
assert( m_totalCount > 0.0 );
|
|
|
|
|
|
|
|
// read source-labelled rule items
|
|
|
|
std::priority_queue<float> ruleLabelledCountsPQ;
|
|
|
|
while (tokenizer.peek() != EOF) {
|
|
// try {
|
|
|
|
SourceLabelsPhrasePropertyItem item;
|
|
size_t numberOfLHSsGivenRHS = std::numeric_limits<std::size_t>::max();
|
|
|
|
if (m_nNTs == 1) {
|
|
|
|
item.m_sourceLabelsRHSCount = m_totalCount;
|
|
|
|
} else { // rule has right-hand side non-terminals, i.e. it's a hierarchical rule
|
|
|
|
for (size_t i=0; i<m_nNTs-1; ++i) { // RHS source non-terminal labels
|
|
size_t sourceLabelRHS;
|
|
if (! (tokenizer >> sourceLabelRHS) ) { // RHS source non-terminal label
|
|
UTIL_THROW2("SourceLabelsPhraseProperty: Not able to read right-hand side label index. Flawed property? " << value);
|
|
}
|
|
item.m_sourceLabelsRHS.push_back(sourceLabelRHS);
|
|
}
|
|
|
|
if (! (tokenizer >> item.m_sourceLabelsRHSCount)) {
|
|
UTIL_THROW2("SourceLabelsPhraseProperty: Not able to read right-hand side count. Flawed property? " << value);
|
|
}
|
|
|
|
if (! (tokenizer >> numberOfLHSsGivenRHS)) {
|
|
UTIL_THROW2("SourceLabelsPhraseProperty: Not able to read number of left-hand sides. Flawed property? " << value);
|
|
}
|
|
}
|
|
|
|
for (size_t i=0; i<numberOfLHSsGivenRHS && tokenizer.peek()!=EOF; ++i) { // LHS source non-terminal labels seen with this RHS
|
|
size_t sourceLabelLHS;
|
|
if (! (tokenizer >> sourceLabelLHS)) { // LHS source non-terminal label
|
|
UTIL_THROW2("SourceLabelsPhraseProperty: Not able to read left-hand side label index. Flawed property? " << value);
|
|
}
|
|
float ruleSourceLabelledCount;
|
|
if (! (tokenizer >> ruleSourceLabelledCount)) {
|
|
UTIL_THROW2("SourceLabelsPhraseProperty: Not able to read count. Flawed property? " << value);
|
|
}
|
|
item.m_sourceLabelsLHSList.push_back( std::make_pair(sourceLabelLHS,ruleSourceLabelledCount) );
|
|
ruleLabelledCountsPQ.push(ruleSourceLabelledCount);
|
|
}
|
|
|
|
m_sourceLabelItems.push_back(item);
|
|
|
|
// } catch (const std::exception &e) {
|
|
// UTIL_THROW2("SourceLabelsPhraseProperty: Read error. Flawed property?");
|
|
// }
|
|
}
|
|
|
|
// keep only top N label vectors
|
|
const size_t N=50;
|
|
|
|
if (ruleLabelledCountsPQ.size() > N) {
|
|
|
|
float topNRuleLabelledCount = std::numeric_limits<int>::max();
|
|
for (size_t i=0; !ruleLabelledCountsPQ.empty() && i<N; ++i) {
|
|
topNRuleLabelledCount = ruleLabelledCountsPQ.top();
|
|
ruleLabelledCountsPQ.pop();
|
|
}
|
|
|
|
size_t nKept=0;
|
|
std::list<SourceLabelsPhrasePropertyItem>::iterator itemIter=m_sourceLabelItems.begin();
|
|
while (itemIter!=m_sourceLabelItems.end()) {
|
|
if (itemIter->m_sourceLabelsRHSCount < topNRuleLabelledCount) {
|
|
itemIter = m_sourceLabelItems.erase(itemIter);
|
|
} else {
|
|
std::list< std::pair<size_t,float> >::iterator itemLHSIter=(itemIter->m_sourceLabelsLHSList).begin();
|
|
while (itemLHSIter!=(itemIter->m_sourceLabelsLHSList).end()) {
|
|
if (itemLHSIter->second < topNRuleLabelledCount) {
|
|
itemLHSIter = (itemIter->m_sourceLabelsLHSList).erase(itemLHSIter);
|
|
} else {
|
|
if (nKept >= N) {
|
|
itemLHSIter = (itemIter->m_sourceLabelsLHSList).erase(itemLHSIter,(itemIter->m_sourceLabelsLHSList).end());
|
|
} else {
|
|
++nKept;
|
|
++itemLHSIter;
|
|
}
|
|
}
|
|
}
|
|
if ((itemIter->m_sourceLabelsLHSList).empty()) {
|
|
itemIter = m_sourceLabelItems.erase(itemIter);
|
|
} else {
|
|
++itemIter;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
};
|
|
|
|
} // namespace Moses
|
|
|