diff --git a/scripts/matlab/mmn.m b/scripts/matlab/mmn.m
new file mode 100644
index 0000000..951693b
--- /dev/null
+++ b/scripts/matlab/mmn.m
@@ -0,0 +1,3 @@
+function [S1] = mmn(S)
+S1 = (S - min(S(:))) ./ (max(S(:)) - min(S(:)));
+end
diff --git a/scripts/matlab/rocPoint.m b/scripts/matlab/rocPoint.m
new file mode 100644
index 0000000..d858fac
--- /dev/null
+++ b/scripts/matlab/rocPoint.m
@@ -0,0 +1,8 @@
+function [ta score] = getROC(t,f,th)
+% [ta] = getROC(t,f,th)
+    [a1 a2] = min(abs(f - th));
+    ta = t(a2);
+    score = a2;
+    if max(f) == 0
+        ta = 1.0;
+    end