From 86ee3e15a441aec72eaebdd0389fa925da2316c7 Mon Sep 17 00:00:00 2001
From: Matthias Huck <huck@i6.informatik.rwth-aachen.de>
Date: Wed, 29 Jan 2014 18:37:42 +0000
Subject: new version of the `score` tool which is now capable of dealing with
 additional properties in an appropriate manner

---
 phrase-extract/DomainFeature.cpp | 173 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 173 insertions(+)
 create mode 100644 phrase-extract/DomainFeature.cpp

(limited to 'phrase-extract/DomainFeature.cpp')

diff --git a/phrase-extract/DomainFeature.cpp b/phrase-extract/DomainFeature.cpp
new file mode 100644
index 000000000..2f99a8709
--- /dev/null
+++ b/phrase-extract/DomainFeature.cpp
@@ -0,0 +1,173 @@
+#include "DomainFeature.h"
+#include "ExtractionPhrasePair.h"
+#include "tables-core.h"
+#include "InputFileStream.h"
+#include "SafeGetline.h"
+
+#define TABLE_LINE_MAX_LENGTH 1000
+
+using namespace std;
+
+namespace MosesTraining
+{
+
+// handling of domain names: load database with sentence-id / domain name info
+void Domain::load( const std::string &domainFileName )
+{
+  Moses::InputFileStream fileS( domainFileName );
+  istream *fileP = &fileS;
+  while(true) {
+    char line[TABLE_LINE_MAX_LENGTH];
+    SAFE_GETLINE((*fileP), line, TABLE_LINE_MAX_LENGTH, '\n', __FILE__);
+    if (fileP->eof()) break;
+    // read
+    vector< string > domainSpecLine = tokenize( line );
+    int lineNumber;
+    if (domainSpecLine.size() != 2 ||
+        ! sscanf(domainSpecLine[0].c_str(), "%d", &lineNumber)) {
+      std::cerr << "ERROR: in domain specification line: '" << line << "'" << endl;
+      exit(1);
+    }
+    // store
+    string &name = domainSpecLine[1];
+    spec.push_back( make_pair( lineNumber, name ));
+    if (name2id.find( name ) == name2id.end()) {
+      name2id[ name ] = list.size();
+      list.push_back( name );
+    }
+  }
+}
+
+// get domain name based on sentence number
+string Domain::getDomainOfSentence( int sentenceId ) const
+{
+  for(size_t i=0; i<spec.size(); i++) {
+    if (sentenceId <= spec[i].first) {
+      return spec[i].second;
+    }
+  }
+  return "undefined";
+}
+
+DomainFeature::DomainFeature(const string& domainFile) : m_propertyKey("domain")
+{
+  //process domain file
+  m_domain.load(domainFile);
+}
+
+void DomainFeature::addPropertiesToPhrasePair(ExtractionPhrasePair &phrasePair, 
+                                              float count, 
+                                              int sentenceId) const
+{
+  std::string value = m_domain.getDomainOfSentence(sentenceId);
+  phrasePair.AddProperty(m_propertyKey, value, count);
+}
+
+void DomainFeature::add(const ScoreFeatureContext& context,
+                        std::vector<float>& denseValues,
+                        std::map<std::string,float>& sparseValues)  const
+{
+  const map<string,float> *domainCount = context.phrasePair.GetProperty(m_propertyKey);
+  assert( domainCount != NULL );
+  add(*domainCount, 
+      context.phrasePair.GetCount(), 
+      context.maybeLog, 
+      denseValues, sparseValues);
+}
+
+void SubsetDomainFeature::add(const map<string,float>& domainCount, 
+                              float count,
+                              const MaybeLog& maybeLog,
+                              std::vector<float>& denseValues,
+                              std::map<std::string,float>& sparseValues)  const
+{
+  if (m_domain.list.size() > 6) {
+    UTIL_THROW_IF(m_domain.list.size() > 6, ScoreFeatureArgumentException,
+                  "too many domains for core domain subset features");
+  }
+  size_t bitmap = 0;
+  for(size_t bit = 0; bit < m_domain.list.size(); bit++) {
+    if (domainCount.find( m_domain.list[ bit ] ) != domainCount.end()) {
+      bitmap += 1 << bit;
+    }
+  }
+  for(size_t i = 1; i < (1 << m_domain.list.size()); i++) {
+    denseValues.push_back(maybeLog( (bitmap == i) ? 2.718 : 1 ));
+  }
+}
+
+void SparseSubsetDomainFeature::add(const map<string,float>& domainCount,float count,
+                                    const MaybeLog& maybeLog,
+                                    std::vector<float>& denseValues,
+                                    std::map<std::string,float>& sparseValues)  const
+{
+  typedef vector<string>::const_iterator I;
+  ostringstream key;
+  key << "doms";
+  for (I i = m_domain.list.begin(); i != m_domain.list.end(); ++i) {
+    if (domainCount.find(*i) != domainCount.end()) {
+      key << "_" << *i;
+    }
+  }
+  sparseValues[key.str()] = 1;
+}
+
+
+void RatioDomainFeature::add(const map<string,float>& domainCount,float count,
+                             const MaybeLog& maybeLog,
+                             std::vector<float>& denseValues,
+                             std::map<std::string,float>& sparseValues)  const
+{
+  typedef vector< string >::const_iterator I;
+  for (I i = m_domain.list.begin(); i != m_domain.list.end(); i++ ) {
+    map<string,float>::const_iterator dci = domainCount.find(*i);
+    if (dci == domainCount.end() ) {
+      denseValues.push_back(maybeLog( 1 ));
+    } else {
+      denseValues.push_back(maybeLog(exp( dci->second / count ) ));
+    }
+  }
+}
+
+
+void SparseRatioDomainFeature::add(const map<string,float>& domainCount,float count,
+                                   const MaybeLog& maybeLog,
+                                   std::vector<float>& denseValues,
+                                   std::map<std::string,float>& sparseValues)  const
+{
+  typedef map< string, float >::const_iterator I;
+  for (I i=domainCount.begin(); i != domainCount.end(); i++) {
+    sparseValues["domr_" + i->first] =  (i->second / count);
+  }
+}
+
+
+void IndicatorDomainFeature::add(const map<string,float>& domainCount,float count,
+                                 const MaybeLog& maybeLog,
+                                 std::vector<float>& denseValues,
+                                 std::map<std::string,float>& sparseValues)  const
+{
+  typedef vector< string >::const_iterator I;
+  for (I i = m_domain.list.begin(); i != m_domain.list.end(); i++ ) {
+    map<string,float>::const_iterator dci = domainCount.find(*i);
+    if (dci == domainCount.end() ) {
+      denseValues.push_back(maybeLog( 1 ));
+    } else {
+      denseValues.push_back(maybeLog(2.718));
+    }
+  }
+}
+
+void SparseIndicatorDomainFeature::add(const map<string,float>& domainCount,float count,
+                                       const MaybeLog& maybeLog,
+                                       std::vector<float>& denseValues,
+                                       std::map<std::string,float>& sparseValues)  const
+{
+  typedef map< string, float >::const_iterator I;
+  for (I i=domainCount.begin(); i != domainCount.end(); i++) {
+    sparseValues["dom_" + i->first] = 1;
+  }
+}
+
+}
+
-- 
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