From 0f73fa5b8bd5441300d01f1106d5c71909e2ca97 Mon Sep 17 00:00:00 2001
From: Wenhao-H <wenhao.huang.work@gmail.com>
Date: Mon, 22 Oct 2018 11:29:05 -0400
Subject: [PATCH] small fixes

---
 src/mlpack/methods/cf/cf.hpp                                   | 3 +++
 src/mlpack/methods/cf/normalization/combined_normalization.hpp | 2 +-
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/mlpack/methods/cf/cf.hpp b/src/mlpack/methods/cf/cf.hpp
index f44517eb94..5154c60d53 100644
--- a/src/mlpack/methods/cf/cf.hpp
+++ b/src/mlpack/methods/cf/cf.hpp
@@ -179,6 +179,9 @@ class CFType
   //! Get the cleaned data matrix.
   const arma::sp_mat& CleanedData() const { return cleanedData; }
 
+  //! Get the normalization object.
+  const NormalizationType& Normalization() const { return normalization; }
+
   /**
    * Generates the given number of recommendations for all users.
    *
diff --git a/src/mlpack/methods/cf/normalization/combined_normalization.hpp b/src/mlpack/methods/cf/normalization/combined_normalization.hpp
index 3bd36a8451..6836707f14 100644
--- a/src/mlpack/methods/cf/normalization/combined_normalization.hpp
+++ b/src/mlpack/methods/cf/normalization/combined_normalization.hpp
@@ -93,7 +93,7 @@ class CombinedNormalization
   /**
    * Return normalizations tuple.
    */
-  TupleType Normalizations() const
+  const TupleType& Normalizations() const
   {
     return normalizations;
   }