From cc6e00d0915049ddd71f1347bedbb429c1795c04 Mon Sep 17 00:00:00 2001
From: SmartAI <19516876+SmartAI@users.noreply.github.com>
Date: Fri, 18 Feb 2022 10:58:52 +0800
Subject: [PATCH] fix  logit funciton error

---
 MLPP/Activation/Activation.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/MLPP/Activation/Activation.cpp b/MLPP/Activation/Activation.cpp
index 741c49b..6e15fff 100644
--- a/MLPP/Activation/Activation.cpp
+++ b/MLPP/Activation/Activation.cpp
@@ -221,7 +221,7 @@ namespace MLPP{
 
     double Activation::logit(double z, bool deriv){
         if(deriv) { return 1/z - 1/(z-1); }
-        return std::log(z / (1 + z));
+        return std::log(z / (1 - z));
     }
 
     std::vector<double> Activation::logit(std::vector<double> z, bool deriv){
@@ -881,4 +881,4 @@ namespace MLPP{
         }
         return a;
     }
-}
\ No newline at end of file
+}