factor forest stats (show size post pruning, and portion kept) and cdec --scale_prune_srclen

git-svn-id: https://ws10smt.googlecode.com/svn/trunk@96 ec762483-ff6d-05da-a07a-a48fb63a330f

1 files changed, 17 insertions, 0 deletions

diff --git a/decoder/viterbi.cc b/decoder/viterbi.cc
index 582dc5b2..7f52d08c 100644
--- a/decoder/viterbi.cc
+++ b/decoder/viterbi.cc
@@ -6,6 +6,23 @@
 
 using namespace std;
 
+std::string viterbi_stats(Hypergraph const& hg, std::string const& name, bool estring, bool etree)
+{
+  ostringstream o;
+  o << hg.stats(name);
+  if (estring) {
+    vector<WordID> trans;
+    const prob_t vs = ViterbiESentence(hg, &trans);
+    o<<name<<"       Viterbi: "<<log(vs)<<endl;
+    o<<name<<"       Viterbi: "<<TD::GetString(trans)<<endl;
+  }
+  if (etree) {
+    o<<name<<"          tree: "<<ViterbiETree(hg)<<endl;
+  }
+  return o.str();
+}
+
+
 string ViterbiETree(const Hypergraph& hg) {
   vector<WordID> tmp;
   const prob_t p = Viterbi<vector<WordID>, ETreeTraversal, prob_t, EdgeProb>(hg, &tmp);