From faa4da4835e0622387e2ab1f6481875c5243c5c9 Mon Sep 17 00:00:00 2001
From: caoying03 <caoying03@baidu.com>
Date: Mon, 4 Sep 2017 13:02:27 +0800
Subject: [PATCH] fix ctc edit distance in v2 API.

---
 .../gserver/evaluators/CTCErrorEvaluator.cpp  | 56 +++++++++++++++----
 1 file changed, 46 insertions(+), 10 deletions(-)

diff --git a/paddle/gserver/evaluators/CTCErrorEvaluator.cpp b/paddle/gserver/evaluators/CTCErrorEvaluator.cpp
index 132119015f..8e2dc020cd 100644
--- a/paddle/gserver/evaluators/CTCErrorEvaluator.cpp
+++ b/paddle/gserver/evaluators/CTCErrorEvaluator.cpp
@@ -26,6 +26,7 @@ private:
   int numTimes_, numClasses_, numSequences_, blank_;
   real deletions_, insertions_, substitutions_;
   int seqClassficationError_;
+  mutable std::unordered_map<std::string, real> evalResults_;
 
   std::vector<int> path2String(const std::vector<int>& path) {
     std::vector<int> str;
@@ -183,6 +184,18 @@ private:
     return stringAlignment(gtStr, recogStr);
   }
 
+  void storeLocalValues() const {
+    evalResults_["error"] = numSequences_ ? totalScore_ / numSequences_ : 0;
+    evalResults_["deletion_error"] =
+        numSequences_ ? deletions_ / numSequences_ : 0;
+    evalResults_["insertion_error"] =
+        numSequences_ ? insertions_ / numSequences_ : 0;
+    evalResults_["substitution_error"] =
+        numSequences_ ? substitutions_ / numSequences_ : 0;
+    evalResults_["sequence_error"] =
+        (real)seqClassficationError_ / numSequences_;
+  }
+
 public:
   CTCErrorEvaluator()
       : numTimes_(0),
@@ -245,16 +258,12 @@ public:
   }
 
   virtual void printStats(std::ostream& os) const {
-    os << config_.name() << "="
-       << (numSequences_ ? totalScore_ / numSequences_ : 0);
-    os << "  deletions error"
-       << "=" << (numSequences_ ? deletions_ / numSequences_ : 0);
-    os << "  insertions error"
-       << "=" << (numSequences_ ? insertions_ / numSequences_ : 0);
-    os << "  substitutions error"
-       << "=" << (numSequences_ ? substitutions_ / numSequences_ : 0);
-    os << "  sequences error"
-       << "=" << (real)seqClassficationError_ / numSequences_;
+    storeLocalValues();
+    os << config_.name() << "=" << evalResults_["error"];
+    os << " deletions error = " << evalResults_["deletion_error"];
+    os << " insertions error = " << evalResults_["insertion_error"];
+    os << " substitution error = " << evalResults_["substitution_error"];
+    os << " sequence error = " << evalResults_["sequence_error"];
   }
 
   virtual void distributeEval(ParameterClient2* client) {
@@ -272,6 +281,33 @@ public:
     seqClassficationError_ = (int)buf[4];
     numSequences_ = (int)buf[5];
   }
+
+  void getNames(std::vector<std::string>* names) {
+    storeLocalValues();
+    names->reserve(names->size() + evalResults_.size());
+    for (auto it = evalResults_.begin(); it != evalResults_.end(); ++it) {
+      names->push_back(config_.name() + "." + it->first);
+    }
+  }
+
+  real getValue(const std::string& name, Error* err) const {
+    storeLocalValues();
+
+    const std::string delimiter(".");
+    std::string::size_type foundPos = name.find(delimiter, 0);
+    CHECK(foundPos != std::string::npos);
+
+    auto it = evalResults_.find(
+        name.substr(foundPos + delimiter.size(), name.length()));
+    if (it == evalResults_.end()) {
+      *err = Error("Evaluator does not have the key %s", name.c_str());
+      return 0.0f;
+    }
+
+    return it->second;
+  }
+
+  std::string getTypeImpl() const { return "ctc_edit_distance"; }
 };
 
 REGISTER_EVALUATOR(ctc_edit_distance, CTCErrorEvaluator);
-- 
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