diff --git a/paddle/gserver/evaluators/Evaluator.cpp b/paddle/gserver/evaluators/Evaluator.cpp
index ae7508e2bb117a60492e0c28230f2fbb4b14915e..4689222e3ade62f20bfb4fcac5edb3ba62f48cfd 100644
--- a/paddle/gserver/evaluators/Evaluator.cpp
+++ b/paddle/gserver/evaluators/Evaluator.cpp
@@ -449,6 +449,21 @@ double AucEvaluator::calcAuc() const {
   }
 }
 
+real AucEvaluator::getValueImpl() const { return calcAuc(); }
+
+std::string AucEvaluator::getTypeImpl() const {
+  if (colIdx_ == -1) {
+    return "last-column-auc";
+  } else {
+    return "auc";
+  }
+}
+
+static InitFunction __reg_type_auc__([]() {
+  Evaluator::registrar_.registerClass("last-column-auc",
+                                      [] { return new AucEvaluator(-1); });
+});
+
 // class RankAucEvaluator
 REGISTER_EVALUATOR(rankauc, RankAucEvaluator);
 
@@ -873,8 +888,6 @@ Evaluator* Evaluator::create(const EvaluatorConfig& config) {
     evaluator = new SumEvaluator();
   } else if (config.type() == "last-column-sum") {
     evaluator = new ColumnSumEvaluator(-1);
-  } else if (config.type() == "last-column-auc") {
-    evaluator = new AucEvaluator(-1);
   } else {
     evaluator = registrar_.createByType(config.type());
   }
@@ -1253,4 +1266,6 @@ public:
 };
 REGISTER_EVALUATOR(classification_error_printer, ClassificationErrorPrinter);
 
+std::string DummyEvaluator::getTypeImpl() const { return "dummy"; }
+
 }  // namespace paddle
diff --git a/paddle/gserver/evaluators/Evaluator.h b/paddle/gserver/evaluators/Evaluator.h
index 5770847309670ef1856cfb9255fa847c24513b56..bf08aa07f0ce3108cbf395f3d52ded1845bac9a0 100644
--- a/paddle/gserver/evaluators/Evaluator.h
+++ b/paddle/gserver/evaluators/Evaluator.h
@@ -19,6 +19,7 @@ limitations under the License. */
 #include "paddle/parameter/Argument.h"
 #include "paddle/pserver/ParameterClient2.h"
 #include "paddle/utils/ClassRegistrar.h"
+#include "paddle/utils/Error.h"
 
 namespace paddle {
 
@@ -117,6 +118,34 @@ public:
 
   static ClassRegistrar<Evaluator> registrar_;
 
+  virtual void getNames(std::vector<std::string>* names) {
+    names->clear();
+    names->push_back(config_.name());
+  }
+
+  virtual real getValue(const std::string& name,
+                        paddle::Error* err = nullptr) const {
+    if (name != config_.name() && err != nullptr) {
+      *err = paddle::Error("no such name of evaluator %s", name.c_str());
+      return .0f;
+    }
+    return this->getValueImpl();
+  }
+
+  virtual std::string getType(const std::string& name,
+                              paddle::Error* err = nullptr) const {
+    if (name != config_.name() && err != nullptr) {
+      *err = paddle::Error("no such name of evaluator %s", name.c_str());
+      return std::string();
+    }
+    return this->getTypeImpl();
+  }
+
+protected:
+  virtual real getValueImpl() const { return .0f; }
+
+  virtual std::string getTypeImpl() const { return "base"; }
+
 protected:
   EvaluatorConfig config_;
   double numSamples_;
@@ -135,6 +164,10 @@ public:
   }
   virtual void finish() {}
   virtual void printStats(std::ostream&) const {}
+
+  // Evaluator interface
+protected:
+  std::string getTypeImpl() const;
 };
 /**
  * @brief evaluate AUC using colIdx-th column as prediction.
@@ -191,6 +224,11 @@ private:
   }
 
   double calcAuc() const;
+
+  // Evaluator interface
+protected:
+  real getValueImpl() const;
+  std::string getTypeImpl() const;
 };
 
 /**