diff --git a/.travis.yml b/.travis.yml
index 0ce769c6..fe18df55 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -212,7 +212,7 @@ matrix:
             - libopencv-dev
       env:
         - CUDACXX=/usr/local/cuda-10.0/bin/nvcc
-        - MATRIX_EVAL="wget http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1404/x86_64/cuda-repo-ubuntu1404_10.0.130-1_amd64.deb && sudo apt-key adv --fetch-keys http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1404/x86_64/7fa2af80.pub && sudo dpkg -i cuda-repo-ubuntu1404_10.0.130-1_amd64.deb && wget http://developer.download.nvidia.com/compute/machine-learning/repos/ubuntu1404/x86_64/nvidia-machine-learning-repo-ubuntu1404_4.0-2_amd64.deb && sudo dpkg -i nvidia-machine-learning-repo-ubuntu1404_4.0-2_amd64.deb && sudo apt-get -y update && sudo apt-get install -y --no-install-recommends cuda-compiler-10-0 cuda-cudart-dev-10-0 cuda-cublas-dev-10-0 cuda-curand-dev-10-0 && sudo apt-get install -y --no-install-recommends libcudnn7-dev"
+        - MATRIX_EVAL="wget http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1404/x86_64/cuda-repo-ubuntu1404_10.0.130-1_amd64.deb && sudo apt-key adv --fetch-keys http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1404/x86_64/7fa2af80.pub && sudo dpkg -i cuda-repo-ubuntu1404_10.0.130-1_amd64.deb && wget http://developer.download.nvidia.com/compute/machine-learning/repos/ubuntu1404/x86_64/nvidia-machine-learning-repo-ubuntu1404_4.0-2_amd64.deb && sudo dpkg -i nvidia-machine-learning-repo-ubuntu1404_4.0-2_amd64.deb && sudo apt-get -y update && sudo apt-get install -y --no-install-recommends cuda-compiler-10-0 cuda-libraries-dev-10-0 cuda-cudart-dev-10-0 cuda-cublas-dev-10-0 cuda-curand-dev-10-0 && sudo apt-get install -y --no-install-recommends libcudnn7-dev"
 
     - os: linux
       compiler: clang
@@ -225,7 +225,7 @@ matrix:
             - clang-3.6
       env:
         - CUDACXX=/usr/local/cuda-10.0/bin/nvcc
-        - MATRIX_EVAL="CC=clang-3.6 && CXX=clang++-3.6 && wget http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1404/x86_64/cuda-repo-ubuntu1404_10.0.130-1_amd64.deb && sudo apt-key adv --fetch-keys http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1404/x86_64/7fa2af80.pub && sudo dpkg -i cuda-repo-ubuntu1404_10.0.130-1_amd64.deb && wget http://developer.download.nvidia.com/compute/machine-learning/repos/ubuntu1404/x86_64/nvidia-machine-learning-repo-ubuntu1404_4.0-2_amd64.deb && sudo dpkg -i nvidia-machine-learning-repo-ubuntu1404_4.0-2_amd64.deb && sudo apt-get -y update && sudo apt-get install -y --no-install-recommends cuda-compiler-10-0 cuda-cudart-dev-10-0 cuda-cublas-dev-10-0 cuda-curand-dev-10-0 && sudo apt-get install -y --no-install-recommends libcudnn7-dev"
+        - MATRIX_EVAL="CC=clang-3.6 && CXX=clang++-3.6 && wget http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1404/x86_64/cuda-repo-ubuntu1404_10.0.130-1_amd64.deb && sudo apt-key adv --fetch-keys http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1404/x86_64/7fa2af80.pub && sudo dpkg -i cuda-repo-ubuntu1404_10.0.130-1_amd64.deb && wget http://developer.download.nvidia.com/compute/machine-learning/repos/ubuntu1404/x86_64/nvidia-machine-learning-repo-ubuntu1404_4.0-2_amd64.deb && sudo dpkg -i nvidia-machine-learning-repo-ubuntu1404_4.0-2_amd64.deb && sudo apt-get -y update && sudo apt-get install -y --no-install-recommends cuda-compiler-10-0 cuda-libraries-dev-10-0 cuda-cudart-dev-10-0 cuda-cublas-dev-10-0 cuda-curand-dev-10-0 && sudo apt-get install -y --no-install-recommends libcudnn7-dev"
 
     - os: linux
       compiler: clang
@@ -240,7 +240,7 @@ matrix:
             - clang-3.8
       env:
         - CUDACXX=/usr/local/cuda-10.0/bin/nvcc
-        - MATRIX_EVAL="CC=clang-3.8 && CXX=clang++-3.8 && wget http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1404/x86_64/cuda-repo-ubuntu1404_10.0.130-1_amd64.deb && sudo apt-key adv --fetch-keys http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1404/x86_64/7fa2af80.pub && sudo dpkg -i cuda-repo-ubuntu1404_10.0.130-1_amd64.deb && wget http://developer.download.nvidia.com/compute/machine-learning/repos/ubuntu1404/x86_64/nvidia-machine-learning-repo-ubuntu1404_4.0-2_amd64.deb && sudo dpkg -i nvidia-machine-learning-repo-ubuntu1404_4.0-2_amd64.deb && sudo apt-get -y update && sudo apt-get install -y --no-install-recommends cuda-compiler-10-0 cuda-cudart-dev-10-0 cuda-cublas-dev-10-0 cuda-curand-dev-10-0 && sudo apt-get install -y --no-install-recommends libcudnn7-dev"
+        - MATRIX_EVAL="CC=clang-3.8 && CXX=clang++-3.8 && wget http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1404/x86_64/cuda-repo-ubuntu1404_10.0.130-1_amd64.deb && sudo apt-key adv --fetch-keys http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1404/x86_64/7fa2af80.pub && sudo dpkg -i cuda-repo-ubuntu1404_10.0.130-1_amd64.deb && wget http://developer.download.nvidia.com/compute/machine-learning/repos/ubuntu1404/x86_64/nvidia-machine-learning-repo-ubuntu1404_4.0-2_amd64.deb && sudo dpkg -i nvidia-machine-learning-repo-ubuntu1404_4.0-2_amd64.deb && sudo apt-get -y update && sudo apt-get install -y --no-install-recommends cuda-compiler-10-0 cuda-libraries-dev-10-0 cuda-cudart-dev-10-0 cuda-cublas-dev-10-0 cuda-curand-dev-10-0 && sudo apt-get install -y --no-install-recommends libcudnn7-dev"
 
     - os: linux
       compiler: clang
@@ -255,7 +255,7 @@ matrix:
             - clang-3.9
       env:
         - CUDACXX=/usr/local/cuda-10.0/bin/nvcc
-        - MATRIX_EVAL="CC=clang-3.9 && CXX=clang++-3.9 && wget http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1404/x86_64/cuda-repo-ubuntu1404_10.0.130-1_amd64.deb && sudo apt-key adv --fetch-keys http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1404/x86_64/7fa2af80.pub && sudo dpkg -i cuda-repo-ubuntu1404_10.0.130-1_amd64.deb && wget http://developer.download.nvidia.com/compute/machine-learning/repos/ubuntu1404/x86_64/nvidia-machine-learning-repo-ubuntu1404_4.0-2_amd64.deb && sudo dpkg -i nvidia-machine-learning-repo-ubuntu1404_4.0-2_amd64.deb && sudo apt-get -y update && sudo apt-get install -y --no-install-recommends cuda-compiler-10-0 cuda-cudart-dev-10-0 cuda-cublas-dev-10-0 cuda-curand-dev-10-0 && sudo apt-get install -y --no-install-recommends libcudnn7-dev"
+        - MATRIX_EVAL="CC=clang-3.9 && CXX=clang++-3.9 && wget http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1404/x86_64/cuda-repo-ubuntu1404_10.0.130-1_amd64.deb && sudo apt-key adv --fetch-keys http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1404/x86_64/7fa2af80.pub && sudo dpkg -i cuda-repo-ubuntu1404_10.0.130-1_amd64.deb && wget http://developer.download.nvidia.com/compute/machine-learning/repos/ubuntu1404/x86_64/nvidia-machine-learning-repo-ubuntu1404_4.0-2_amd64.deb && sudo dpkg -i nvidia-machine-learning-repo-ubuntu1404_4.0-2_amd64.deb && sudo apt-get -y update && sudo apt-get install -y --no-install-recommends cuda-compiler-10-0 cuda-libraries-dev-10-0 cuda-cudart-dev-10-0 cuda-cublas-dev-10-0 cuda-curand-dev-10-0 && sudo apt-get install -y --no-install-recommends libcudnn7-dev"
 
     - os: linux
       compiler: clang
@@ -270,7 +270,7 @@ matrix:
             - clang-4.0
       env:
         - CUDACXX=/usr/local/cuda-10.0/bin/nvcc
-        - MATRIX_EVAL="CC=clang-4.0 && CXX=clang++-4.0 && wget http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1404/x86_64/cuda-repo-ubuntu1404_10.0.130-1_amd64.deb && sudo apt-key adv --fetch-keys http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1404/x86_64/7fa2af80.pub && sudo dpkg -i cuda-repo-ubuntu1404_10.0.130-1_amd64.deb && wget http://developer.download.nvidia.com/compute/machine-learning/repos/ubuntu1404/x86_64/nvidia-machine-learning-repo-ubuntu1404_4.0-2_amd64.deb && sudo dpkg -i nvidia-machine-learning-repo-ubuntu1404_4.0-2_amd64.deb && sudo apt-get -y update && sudo apt-get install -y --no-install-recommends cuda-compiler-10-0 cuda-cudart-dev-10-0 cuda-cublas-dev-10-0 cuda-curand-dev-10-0 && sudo apt-get install -y --no-install-recommends libcudnn7-dev"
+        - MATRIX_EVAL="CC=clang-4.0 && CXX=clang++-4.0 && wget http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1404/x86_64/cuda-repo-ubuntu1404_10.0.130-1_amd64.deb && sudo apt-key adv --fetch-keys http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1404/x86_64/7fa2af80.pub && sudo dpkg -i cuda-repo-ubuntu1404_10.0.130-1_amd64.deb && wget http://developer.download.nvidia.com/compute/machine-learning/repos/ubuntu1404/x86_64/nvidia-machine-learning-repo-ubuntu1404_4.0-2_amd64.deb && sudo dpkg -i nvidia-machine-learning-repo-ubuntu1404_4.0-2_amd64.deb && sudo apt-get -y update && sudo apt-get install -y --no-install-recommends cuda-compiler-10-0 cuda-libraries-dev-10-0 cuda-cudart-dev-10-0 cuda-cublas-dev-10-0 cuda-curand-dev-10-0 && sudo apt-get install -y --no-install-recommends libcudnn7-dev"
 
     - os: linux
       compiler: clang
@@ -285,7 +285,7 @@ matrix:
             - clang-5.0
       env:
         - CUDACXX=/usr/local/cuda-10.0/bin/nvcc
-        - MATRIX_EVAL="CC=clang-5.0 && CXX=clang++-5.0 && wget http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1404/x86_64/cuda-repo-ubuntu1404_10.0.130-1_amd64.deb && sudo apt-key adv --fetch-keys http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1404/x86_64/7fa2af80.pub && sudo dpkg -i cuda-repo-ubuntu1404_10.0.130-1_amd64.deb && wget http://developer.download.nvidia.com/compute/machine-learning/repos/ubuntu1404/x86_64/nvidia-machine-learning-repo-ubuntu1404_4.0-2_amd64.deb && sudo dpkg -i nvidia-machine-learning-repo-ubuntu1404_4.0-2_amd64.deb && sudo apt-get -y update && sudo apt-get install -y --no-install-recommends cuda-compiler-10-0 cuda-cudart-dev-10-0 cuda-cublas-dev-10-0 cuda-curand-dev-10-0 && sudo apt-get install -y --no-install-recommends libcudnn7-dev"
+        - MATRIX_EVAL="CC=clang-5.0 && CXX=clang++-5.0 && wget http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1404/x86_64/cuda-repo-ubuntu1404_10.0.130-1_amd64.deb && sudo apt-key adv --fetch-keys http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1404/x86_64/7fa2af80.pub && sudo dpkg -i cuda-repo-ubuntu1404_10.0.130-1_amd64.deb && wget http://developer.download.nvidia.com/compute/machine-learning/repos/ubuntu1404/x86_64/nvidia-machine-learning-repo-ubuntu1404_4.0-2_amd64.deb && sudo dpkg -i nvidia-machine-learning-repo-ubuntu1404_4.0-2_amd64.deb && sudo apt-get -y update && sudo apt-get install -y --no-install-recommends cuda-compiler-10-0 cuda-libraries-dev-10-0 cuda-cudart-dev-10-0 cuda-cublas-dev-10-0 cuda-curand-dev-10-0 && sudo apt-get install -y --no-install-recommends libcudnn7-dev"
 
     - os: linux
       compiler: clang
@@ -301,7 +301,7 @@ matrix:
             - clang-6.0
       env:
         - CUDACXX=/usr/local/cuda-10.0/bin/nvcc
-        - MATRIX_EVAL="CC=clang-6.0 && CXX=clang++-6.0 && wget http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1404/x86_64/cuda-repo-ubuntu1404_10.0.130-1_amd64.deb && sudo apt-key adv --fetch-keys http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1404/x86_64/7fa2af80.pub && sudo dpkg -i cuda-repo-ubuntu1404_10.0.130-1_amd64.deb && wget http://developer.download.nvidia.com/compute/machine-learning/repos/ubuntu1404/x86_64/nvidia-machine-learning-repo-ubuntu1404_4.0-2_amd64.deb && sudo dpkg -i nvidia-machine-learning-repo-ubuntu1404_4.0-2_amd64.deb && sudo apt-get -y update && sudo apt-get install -y --no-install-recommends cuda-compiler-10-0 cuda-cudart-dev-10-0 cuda-cublas-dev-10-0 cuda-curand-dev-10-0 && sudo apt-get install -y --no-install-recommends libcudnn7-dev"
+        - MATRIX_EVAL="CC=clang-6.0 && CXX=clang++-6.0 && wget http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1404/x86_64/cuda-repo-ubuntu1404_10.0.130-1_amd64.deb && sudo apt-key adv --fetch-keys http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1404/x86_64/7fa2af80.pub && sudo dpkg -i cuda-repo-ubuntu1404_10.0.130-1_amd64.deb && wget http://developer.download.nvidia.com/compute/machine-learning/repos/ubuntu1404/x86_64/nvidia-machine-learning-repo-ubuntu1404_4.0-2_amd64.deb && sudo dpkg -i nvidia-machine-learning-repo-ubuntu1404_4.0-2_amd64.deb && sudo apt-get -y update && sudo apt-get install -y --no-install-recommends cuda-compiler-10-0 cuda-libraries-dev-10-0 cuda-cudart-dev-10-0 cuda-cublas-dev-10-0 cuda-curand-dev-10-0 && sudo apt-get install -y --no-install-recommends libcudnn7-dev"
 
     - os: linux
       compiler: gcc
@@ -313,7 +313,7 @@ matrix:
             - libopencv-dev
       env:
         - CUDACXX=/usr/local/cuda-10.0/bin/nvcc
-        - MATRIX_EVAL="wget http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1404/x86_64/cuda-repo-ubuntu1404_10.0.130-1_amd64.deb && sudo apt-key adv --fetch-keys http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1404/x86_64/7fa2af80.pub && sudo dpkg -i cuda-repo-ubuntu1404_10.0.130-1_amd64.deb && wget http://developer.download.nvidia.com/compute/machine-learning/repos/ubuntu1404/x86_64/nvidia-machine-learning-repo-ubuntu1404_4.0-2_amd64.deb && sudo dpkg -i nvidia-machine-learning-repo-ubuntu1404_4.0-2_amd64.deb && sudo apt-get -y update && sudo apt-get install -y --no-install-recommends cuda-compiler-10-0 cuda-cudart-dev-10-0 cuda-cublas-dev-10-0 cuda-curand-dev-10-0 && sudo apt-get install -y --no-install-recommends libcudnn7-dev"
+        - MATRIX_EVAL="wget http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1404/x86_64/cuda-repo-ubuntu1404_10.0.130-1_amd64.deb && sudo apt-key adv --fetch-keys http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1404/x86_64/7fa2af80.pub && sudo dpkg -i cuda-repo-ubuntu1404_10.0.130-1_amd64.deb && wget http://developer.download.nvidia.com/compute/machine-learning/repos/ubuntu1404/x86_64/nvidia-machine-learning-repo-ubuntu1404_4.0-2_amd64.deb && sudo dpkg -i nvidia-machine-learning-repo-ubuntu1404_4.0-2_amd64.deb && sudo apt-get -y update && sudo apt-get install -y --no-install-recommends cuda-compiler-10-0 cuda-libraries-dev-10-0 cuda-cudart-dev-10-0 cuda-cublas-dev-10-0 cuda-curand-dev-10-0 && sudo apt-get install -y --no-install-recommends libcudnn7-dev"
 
     - os: linux
       compiler: gcc
@@ -328,7 +328,7 @@ matrix:
             - g++-4.9
       env:
         - CUDACXX=/usr/local/cuda-10.0/bin/nvcc
-        - MATRIX_EVAL="CC=gcc-4.9 && CXX=g++-4.9 && wget http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1404/x86_64/cuda-repo-ubuntu1404_10.0.130-1_amd64.deb && sudo apt-key adv --fetch-keys http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1404/x86_64/7fa2af80.pub && sudo dpkg -i cuda-repo-ubuntu1404_10.0.130-1_amd64.deb && wget http://developer.download.nvidia.com/compute/machine-learning/repos/ubuntu1404/x86_64/nvidia-machine-learning-repo-ubuntu1404_4.0-2_amd64.deb && sudo dpkg -i nvidia-machine-learning-repo-ubuntu1404_4.0-2_amd64.deb && sudo apt-get -y update && sudo apt-get install -y --no-install-recommends cuda-compiler-10-0 cuda-cudart-dev-10-0 cuda-cublas-dev-10-0 cuda-curand-dev-10-0 && sudo apt-get install -y --no-install-recommends libcudnn7-dev"
+        - MATRIX_EVAL="CC=gcc-4.9 && CXX=g++-4.9 && wget http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1404/x86_64/cuda-repo-ubuntu1404_10.0.130-1_amd64.deb && sudo apt-key adv --fetch-keys http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1404/x86_64/7fa2af80.pub && sudo dpkg -i cuda-repo-ubuntu1404_10.0.130-1_amd64.deb && wget http://developer.download.nvidia.com/compute/machine-learning/repos/ubuntu1404/x86_64/nvidia-machine-learning-repo-ubuntu1404_4.0-2_amd64.deb && sudo dpkg -i nvidia-machine-learning-repo-ubuntu1404_4.0-2_amd64.deb && sudo apt-get -y update && sudo apt-get install -y --no-install-recommends cuda-compiler-10-0 cuda-libraries-dev-10-0 cuda-cudart-dev-10-0 cuda-cublas-dev-10-0 cuda-curand-dev-10-0 && sudo apt-get install -y --no-install-recommends libcudnn7-dev"
 
     - os: linux
       compiler: gcc
@@ -343,7 +343,7 @@ matrix:
             - g++-5
       env:
         - CUDACXX=/usr/local/cuda-10.0/bin/nvcc
-        - MATRIX_EVAL="CC=gcc-5 && CXX=g++-5 && wget http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1404/x86_64/cuda-repo-ubuntu1404_10.0.130-1_amd64.deb && sudo apt-key adv --fetch-keys http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1404/x86_64/7fa2af80.pub && sudo dpkg -i cuda-repo-ubuntu1404_10.0.130-1_amd64.deb && wget http://developer.download.nvidia.com/compute/machine-learning/repos/ubuntu1404/x86_64/nvidia-machine-learning-repo-ubuntu1404_4.0-2_amd64.deb && sudo dpkg -i nvidia-machine-learning-repo-ubuntu1404_4.0-2_amd64.deb && sudo apt-get -y update && sudo apt-get install -y --no-install-recommends cuda-compiler-10-0 cuda-cudart-dev-10-0 cuda-cublas-dev-10-0 cuda-curand-dev-10-0 && sudo apt-get install -y --no-install-recommends libcudnn7-dev"
+        - MATRIX_EVAL="CC=gcc-5 && CXX=g++-5 && wget http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1404/x86_64/cuda-repo-ubuntu1404_10.0.130-1_amd64.deb && sudo apt-key adv --fetch-keys http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1404/x86_64/7fa2af80.pub && sudo dpkg -i cuda-repo-ubuntu1404_10.0.130-1_amd64.deb && wget http://developer.download.nvidia.com/compute/machine-learning/repos/ubuntu1404/x86_64/nvidia-machine-learning-repo-ubuntu1404_4.0-2_amd64.deb && sudo dpkg -i nvidia-machine-learning-repo-ubuntu1404_4.0-2_amd64.deb && sudo apt-get -y update && sudo apt-get install -y --no-install-recommends cuda-compiler-10-0 cuda-libraries-dev-10-0 cuda-cudart-dev-10-0 cuda-cublas-dev-10-0 cuda-curand-dev-10-0 && sudo apt-get install -y --no-install-recommends libcudnn7-dev"
 
     - os: linux
       compiler: gcc
@@ -358,7 +358,7 @@ matrix:
             - libopencv-dev
       env:
         - CUDACXX=/usr/local/cuda-10.0/bin/nvcc
-        - MATRIX_EVAL="CC=gcc-6 && CXX=g++-6 && wget http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1404/x86_64/cuda-repo-ubuntu1404_10.0.130-1_amd64.deb && sudo apt-key adv --fetch-keys http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1404/x86_64/7fa2af80.pub && sudo dpkg -i cuda-repo-ubuntu1404_10.0.130-1_amd64.deb && wget http://developer.download.nvidia.com/compute/machine-learning/repos/ubuntu1404/x86_64/nvidia-machine-learning-repo-ubuntu1404_4.0-2_amd64.deb && sudo dpkg -i nvidia-machine-learning-repo-ubuntu1404_4.0-2_amd64.deb && sudo apt-get -y update && sudo apt-get install -y --no-install-recommends cuda-compiler-10-0 cuda-cudart-dev-10-0 cuda-cublas-dev-10-0 cuda-curand-dev-10-0 && sudo apt-get install -y --no-install-recommends libcudnn7-dev"
+        - MATRIX_EVAL="CC=gcc-6 && CXX=g++-6 && wget http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1404/x86_64/cuda-repo-ubuntu1404_10.0.130-1_amd64.deb && sudo apt-key adv --fetch-keys http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1404/x86_64/7fa2af80.pub && sudo dpkg -i cuda-repo-ubuntu1404_10.0.130-1_amd64.deb && wget http://developer.download.nvidia.com/compute/machine-learning/repos/ubuntu1404/x86_64/nvidia-machine-learning-repo-ubuntu1404_4.0-2_amd64.deb && sudo dpkg -i nvidia-machine-learning-repo-ubuntu1404_4.0-2_amd64.deb && sudo apt-get -y update && sudo apt-get install -y --no-install-recommends cuda-compiler-10-0 cuda-libraries-dev-10-0 cuda-cudart-dev-10-0 cuda-cublas-dev-10-0 cuda-curand-dev-10-0 && sudo apt-get install -y --no-install-recommends libcudnn7-dev"
 
     - os: linux
       compiler: gcc
@@ -373,7 +373,7 @@ matrix:
             - g++-7
       env:
         - CUDACXX=/usr/local/cuda-10.0/bin/nvcc
-        - MATRIX_EVAL="CC=gcc-7 && CXX=g++-7 && wget http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1404/x86_64/cuda-repo-ubuntu1404_10.0.130-1_amd64.deb && sudo apt-key adv --fetch-keys http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1404/x86_64/7fa2af80.pub && sudo dpkg -i cuda-repo-ubuntu1404_10.0.130-1_amd64.deb && wget http://developer.download.nvidia.com/compute/machine-learning/repos/ubuntu1404/x86_64/nvidia-machine-learning-repo-ubuntu1404_4.0-2_amd64.deb && sudo dpkg -i nvidia-machine-learning-repo-ubuntu1404_4.0-2_amd64.deb && sudo apt-get -y update && sudo apt-get install -y --no-install-recommends cuda-compiler-10-0 cuda-cudart-dev-10-0 cuda-cublas-dev-10-0 cuda-curand-dev-10-0 && sudo apt-get install -y --no-install-recommends libcudnn7-dev"
+        - MATRIX_EVAL="CC=gcc-7 && CXX=g++-7 && wget http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1404/x86_64/cuda-repo-ubuntu1404_10.0.130-1_amd64.deb && sudo apt-key adv --fetch-keys http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1404/x86_64/7fa2af80.pub && sudo dpkg -i cuda-repo-ubuntu1404_10.0.130-1_amd64.deb && wget http://developer.download.nvidia.com/compute/machine-learning/repos/ubuntu1404/x86_64/nvidia-machine-learning-repo-ubuntu1404_4.0-2_amd64.deb && sudo dpkg -i nvidia-machine-learning-repo-ubuntu1404_4.0-2_amd64.deb && sudo apt-get -y update && sudo apt-get install -y --no-install-recommends cuda-compiler-10-0 cuda-libraries-dev-10-0 cuda-cudart-dev-10-0 cuda-cublas-dev-10-0 cuda-curand-dev-10-0 && sudo apt-get install -y --no-install-recommends libcudnn7-dev"
 
     - os: linux
       compiler: gcc
@@ -388,7 +388,7 @@ matrix:
             - g++-8
       env:
         - CUDACXX=/usr/local/cuda-10.0/bin/nvcc
-        - MATRIX_EVAL="CC=gcc-8 && CXX=g++-8 && wget http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1404/x86_64/cuda-repo-ubuntu1404_10.0.130-1_amd64.deb && sudo apt-key adv --fetch-keys http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1404/x86_64/7fa2af80.pub && sudo dpkg -i cuda-repo-ubuntu1404_10.0.130-1_amd64.deb && wget http://developer.download.nvidia.com/compute/machine-learning/repos/ubuntu1404/x86_64/nvidia-machine-learning-repo-ubuntu1404_4.0-2_amd64.deb && sudo dpkg -i nvidia-machine-learning-repo-ubuntu1404_4.0-2_amd64.deb && sudo apt-get -y update && sudo apt-get install -y --no-install-recommends cuda-compiler-10-0 cuda-cudart-dev-10-0 cuda-cublas-dev-10-0 cuda-curand-dev-10-0 && sudo apt-get install -y --no-install-recommends libcudnn7-dev"
+        - MATRIX_EVAL="CC=gcc-8 && CXX=g++-8 && wget http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1404/x86_64/cuda-repo-ubuntu1404_10.0.130-1_amd64.deb && sudo apt-key adv --fetch-keys http://developer.download.nvidia.com/compute/cuda/repos/ubuntu1404/x86_64/7fa2af80.pub && sudo dpkg -i cuda-repo-ubuntu1404_10.0.130-1_amd64.deb && wget http://developer.download.nvidia.com/compute/machine-learning/repos/ubuntu1404/x86_64/nvidia-machine-learning-repo-ubuntu1404_4.0-2_amd64.deb && sudo dpkg -i nvidia-machine-learning-repo-ubuntu1404_4.0-2_amd64.deb && sudo apt-get -y update && sudo apt-get install -y --no-install-recommends cuda-compiler-10-0 cuda-libraries-dev-10-0 cuda-cudart-dev-10-0 cuda-cublas-dev-10-0 cuda-curand-dev-10-0 && sudo apt-get install -y --no-install-recommends libcudnn7-dev"
 
 before_install:
   - travis_retry eval "${MATRIX_EVAL}"
diff --git a/src/detector.c b/src/detector.c
index d189d6b8..46d19615 100644
--- a/src/detector.c
+++ b/src/detector.c
@@ -754,7 +754,7 @@ float validate_detector_map(char *datacfg, char *cfgfile, char *weightfile, floa
     int* truth_classes_count = (int*)calloc(classes, sizeof(int));
 
     // For multi-class precision and recall computation
-    float *avg_iou_per_class = (int*)calloc(classes, sizeof(int));
+    float *avg_iou_per_class = (float*)calloc(classes, sizeof(float));
     int *tp_for_thresh_per_class = (int*)calloc(classes, sizeof(int));
     int *fp_for_thresh_per_class = (int*)calloc(classes, sizeof(int));
 
@@ -1083,10 +1083,10 @@ float validate_detector_map(char *datacfg, char *cfgfile, char *weightfile, floa
     free(fp_for_thresh_per_class);
 
     fprintf(stderr, "Total Detection Time: %f Seconds\n", (double)(time(0) - start));
-    printf("\nSet -map_points flag:\n");
-    printf(" `-map_points 101` for MS COCO \n");
-    printf(" `-map_points 11` for PascalVOC 2007 (uncomment `difficult` in voc.data) \n");
-    printf(" `-map_points 0` (AUC) for ImageNet, PascalVOC 2010-2012, your custom dataset\n");
+    printf("\nSet -points flag:\n");
+    printf(" `-points 101` for MS COCO \n");
+    printf(" `-points 11` for PascalVOC 2007 (uncomment `difficult` in voc.data) \n");
+    printf(" `-points 0` (AUC) for ImageNet, PascalVOC 2010-2012, your custom dataset\n");
     if (reinforcement_fd != NULL) fclose(reinforcement_fd);
 
     // free memory