From da222df300e4f87ad185a7decbf119ad56aa34e0 Mon Sep 17 00:00:00 2001
From: Chris Dyer <redpony@gmail.com>
Date: Fri, 29 Jan 2010 15:56:59 +0000
Subject: word aligner checkin

---
 decoder/ff_wordalign.cc | 17 +++++++++++++++++
 decoder/ff_wordalign.h  | 19 +++++++++++++++++++
 2 files changed, 36 insertions(+)

(limited to 'decoder')

diff --git a/decoder/ff_wordalign.cc b/decoder/ff_wordalign.cc
index c1b66a5e..e3fa91d4 100644
--- a/decoder/ff_wordalign.cc
+++ b/decoder/ff_wordalign.cc
@@ -84,6 +84,23 @@ void RelativeSentencePosition::TraversalFeaturesImpl(const SentenceMetadata& sme
 //  cerr << f_len_ << " " << e_len_ << " [" << edge.i_ << "," << edge.j_ << "|" << edge.prev_i_ << "," << edge.prev_j_ << "]\t" << edge.rule_->AsString() << "\tVAL=" << val << endl;
 }
 
+MarkovJumpFClass::MarkovJumpFClass(const string& param) :
+    FeatureFunction(1) {
+  cerr << "    MarkovJumpFClass" << endl;
+  cerr << "Reading source POS tags from " << param << endl;
+  ReadFile rf(param);
+  istream& in = *rf.stream();
+  while(in) {
+    string line;
+    getline(in, line);
+    if (line.empty()) continue;
+    vector<WordID> v;
+    TD::ConvertSentence(line, &v);
+    pos_.push_back(v);
+  }
+  cerr << "  (" << pos_.size() << " lines)\n";
+}
+
 MarkovJump::MarkovJump(const string& param) :
     FeatureFunction(1),
     fid_(FD::Convert("MarkovJump")),
diff --git a/decoder/ff_wordalign.h b/decoder/ff_wordalign.h
index 582e8c9f..c5404887 100644
--- a/decoder/ff_wordalign.h
+++ b/decoder/ff_wordalign.h
@@ -54,6 +54,25 @@ class MarkovJump : public FeatureFunction {
   std::string template_;
 };
 
+class MarkovJumpFClass : public FeatureFunction {
+ public:
+  MarkovJumpFClass(const std::string& param);
+  virtual void FinalTraversalFeatures(const void* context,
+                                      SparseVector<double>* features) const;
+ protected:
+  virtual void TraversalFeaturesImpl(const SentenceMetadata& smeta,
+                                     const Hypergraph::Edge& edge,
+                                     const std::vector<const void*>& ant_contexts,
+                                     SparseVector<double>* features,
+                                     SparseVector<double>* estimated_features,
+                                     void* context) const;
+ private:
+  void FireFeature(WordID src,
+                   WordID trg,
+                   SparseVector<double>* features) const;
+  std::vector<std::vector<WordID> > pos_;
+};
+
 typedef std::map<WordID, int> Class2FID;
 typedef std::map<WordID, Class2FID> Class2Class2FID;
 class SourcePOSBigram : public FeatureFunction {
-- 
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