diff --git a/src/experimental_clfs/ExpClf.h b/src/experimental_clfs/ExpClf.h
index 5d28991..82098ba 100644
--- a/src/experimental_clfs/ExpClf.h
+++ b/src/experimental_clfs/ExpClf.h
@@ -46,7 +46,6 @@ namespace platform {
         bool debug = false;
         Xaode aode_;
         torch::Tensor weights_;
-        bool fitted = false;
         const std::string CLASSIFIER_NOT_FITTED = "Classifier has not been fitted";
         inline void normalize_weights(int num_instances)
         {
diff --git a/src/experimental_clfs/Xaode.hpp b/src/experimental_clfs/Xaode.hpp
index cb021e0..7ff6270 100644
--- a/src/experimental_clfs/Xaode.hpp
+++ b/src/experimental_clfs/Xaode.hpp
@@ -182,7 +182,6 @@ namespace platform {
                 }
             }
         }
-
         // -------------------------------------------------------
         // computeProbabilities
         // -------------------------------------------------------
@@ -257,7 +256,6 @@ namespace platform {
             }
             matrixState_ = MatrixState::PROBS;
         }
-
         // -------------------------------------------------------
         // predict_proba_spode
         // -------------------------------------------------------
@@ -372,10 +370,7 @@ namespace platform {
         }
         void normalize(std::vector<double>& probs) const
         {
-            double sum = 0;
-            for (double d : probs) {
-                sum += d;
-            }
+            double sum = std::accumulate(probs.begin(), probs.end(), 0.0);
             if (std::isnan(sum)) {
                 throw std::runtime_error("Can't normalize array. Sum is NaN.");
             }
@@ -420,7 +415,6 @@ namespace platform {
             active_parents.pop_back();
         }
 
-
     private:
         // -----------
         // MEMBER DATA