build passed. adding optional logger #26

src/boosting/gbdt.cpp

@@ -208,7 +208,7 @@ void GBDT::Train() {
                                      std::milli>(end_time - start_time) * 1e-3, iter + 1);
     if (is_early_stopping) {
         // close file with an early-stopping message
-        Log::Stdout("early stopping at iteration %d, the best iteration round is %d", iter + 1, iter + 1 - early_stopping_round_);
+        Log::Info("Early stopping at iteration %d, the best iteration round is %d\d", iter + 1, iter + 1 - early_stopping_round_);
         fclose(output_model_file);
         return;
     }

src/metric/binary_metric.hpp

@@ -230,7 +230,7 @@ public:
         auc = accum / (sum_pos *(sum_weights_ - sum_pos));
       }
       if (output_freq_ > 0 && iter % output_freq_ == 0){
-        Log::Info("Iteration:%d, %s's %s: %f\n", iter, name, "auc", loss);
+        Log::Info("Iteration:%d, %s's %s: %f\n", iter, name, "auc", auc);
       }
       return auc;
     }