diff --git a/src/main/HyperParameters.cpp b/src/main/HyperParameters.cpp
index 719a921..1d3e5a6 100644
--- a/src/main/HyperParameters.cpp
+++ b/src/main/HyperParameters.cpp
@@ -10,14 +10,7 @@ namespace platform {
         for (const auto& item : datasets) {
             hyperparameters[item] = hyperparameters_;
         }
-    }
-    // https://www.techiedelight.com/implode-a-vector-of-strings-into-a-comma-separated-string-in-cpp/
-    std::string join(std::vector<std::string> const& strings, std::string delim)
-    {
-        std::stringstream ss;
-        std::copy(strings.begin(), strings.end(),
-            std::ostream_iterator<std::string>(ss, delim.c_str()));
-        return ss.str();
+        normalize_nested(datasets);
     }
     HyperParameters::HyperParameters(const std::vector<std::string>& datasets, const std::string& hyperparameters_file, bool best)
     {
@@ -31,7 +24,7 @@ namespace platform {
         json input_hyperparameters;
         if (best) {
             for (const auto& [key, value] : file_hyperparameters.items()) {
-                input_hyperparameters[key] = value[1];
+                input_hyperparameters[key]["hyperparameters"] = value[1];
             }
         } else {
             input_hyperparameters = file_hyperparameters["results"];
@@ -45,6 +38,24 @@ namespace platform {
             }
             hyperparameters[dataset] = input_hyperparameters[dataset]["hyperparameters"].get<json>();
         }
+        normalize_nested(datasets);
+    }
+    void HyperParameters::normalize_nested(const std::vector<std::string>& datasets)
+    {
+        for (const auto& dataset : datasets) {
+            if (hyperparameters[dataset].contains("be_hyperparams")) {
+                // Odte has base estimator hyperparameters set this way
+                hyperparameters[dataset]["be_hyperparams"] = hyperparameters[dataset]["be_hyperparams"].dump();
+            }
+        }
+    }
+    // https://www.techiedelight.com/implode-a-vector-of-strings-into-a-comma-separated-string-in-cpp/
+    std::string join(std::vector<std::string> const& strings, std::string delim)
+    {
+        std::stringstream ss;
+        std::copy(strings.begin(), strings.end(),
+            std::ostream_iterator<std::string>(ss, delim.c_str()));
+        return ss.str();
     }
     void HyperParameters::check(const std::vector<std::string>& valid, const std::string& fileName)
     {
diff --git a/src/main/HyperParameters.h b/src/main/HyperParameters.h
index ed1b948..02957c7 100644
--- a/src/main/HyperParameters.h
+++ b/src/main/HyperParameters.h
@@ -19,6 +19,7 @@ namespace platform {
         void check(const std::vector<std::string>& valid, const std::string& fileName);
         json get(const std::string& fileName);
     private:
+        void normalize_nested(const std::vector<std::string>& datasets);
         std::map<std::string, json> hyperparameters;
         bool best = false; // Used to separate grid/best hyperparameters as the format of those files are different
     };