add code for printing out information about a translation (ie, distortion, dropped words, etc)

git-svn-id: https://mosesdecoder.svn.sourceforge.net/svnroot/mosesdecoder/trunk@496 1f5c12ca-751b-0410-a591-d2e778427230

moses-cmd/src/Makefile.am

@@ -1,5 +1,5 @@
 bin_PROGRAMS = moses 
-moses_SOURCES = Main.cpp IOCommandLine.cpp  IOFile.cpp 
+moses_SOURCES = Main.cpp IOCommandLine.cpp  IOFile.cpp TranslationAnalysis.cpp
 AM_CPPFLAGS = -W -Wall -ffor-scope -D_FILE_OFFSET_BITS=64 -D_LARGE_FILES
 
 moses_LDADD = -lmoses

moses-cmd/src/TranslationAnalysis.cpp

@@ -0,0 +1,73 @@
+#include <iostream>
+#include <sstream>
+#include <algorithm>
+#include "Hypothesis.h"
+#include "TranslationAnalysis.h"
+
+namespace TranslationAnalysis {
+
+void PrintTranslationAnalysis(std::ostream &os, const Hypothesis* hypo)
+{
+  std::vector<const Hypothesis*> translationPath;
+  while (hypo) {
+    translationPath.push_back(hypo);
+    hypo = hypo->GetPrevHypo();
+  }
+  std::reverse(translationPath.begin(), translationPath.end());
+
+  std::vector<std::string> droppedWords;
+  std::vector<const Hypothesis*>::iterator tpi = translationPath.begin();
+  ++tpi;  // skip initial translation state
+	std::vector<std::string> sourceMap;
+	std::vector<std::string> targetMap;
+  for (; tpi != translationPath.end(); ++tpi) {
+		std::ostringstream sms;
+		std::ostringstream tms;
+    std::string target = (*tpi)->GetTargetPhraseStringRep();
+    std::string source = (*tpi)->GetSourcePhraseStringRep();
+		WordsRange twr = (*tpi)->GetCurrTargetWordsRange();
+		WordsRange swr = (*tpi)->GetCurrSourceWordsRange();
+		bool epsilon = false;
+    if (target == "") {
+      target="<EPSILON>";
+			epsilon = true;
+      droppedWords.push_back(source);
+    }
+    os << "       SOURCE: " << swr << " " << source << std::endl
+       << "TRANSLATED AS: "               << target << std::endl;
+		size_t twr_i = twr.GetStartPos();
+		size_t swr_i = swr.GetStartPos();
+		if (!epsilon) { sms << twr_i; }
+		if (epsilon) { tms << "del(" << swr_i << ")"; } else { tms << swr_i; }
+		swr_i++; twr_i++;
+		for (; twr_i <= twr.GetEndPos(); twr_i++) {
+			sms << '-' << twr_i;
+		}
+		for (; swr_i <= swr.GetEndPos(); swr_i++) {
+			tms << '-' << swr_i;
+		}
+		if (!epsilon) targetMap.push_back(sms.str());
+		sourceMap.push_back(tms.str());
+  }
+	std::vector<std::string>::iterator si = sourceMap.begin();
+	std::vector<std::string>::iterator ti = targetMap.begin();
+	os << "SOURCE:";
+	for (; si != sourceMap.end(); ++si) {
+		os << " " << *si;
+	}
+	os << std::endl << "TARGET:";
+	for (; ti != targetMap.end(); ++ti) {
+		os << " " << *ti;
+	}
+	os << std::endl;
+
+  if (droppedWords.size() > 0) {
+    std::vector<std::string>::iterator dwi = droppedWords.begin();
+    os << "WORDS/PHRASES DROPPED:" << std::endl;
+    for (; dwi != droppedWords.end(); ++dwi) {
+      os << "\t" << *dwi << std::endl;
+    }
+  }
+}
+
+}

moses-cmd/src/TranslationAnalysis.h

@@ -0,0 +1,19 @@
+#ifndef _TRANSLATION_ANALYSIS_H_
+#define _TRANSLATION_ANALYSIS_H_
+
+#include <iostream>
+
+class Hypothesis;
+
+namespace TranslationAnalysis
+{
+
+/***
+ * print details about the translation represented in hypothesis to
+ * os.  Included information: phrase alignment, words dropped, scores
+ */
+void PrintTranslationAnalysis(std::ostream &os, const Hypothesis* hypo);
+
+}
+
+#endif