From 2277965dfcb979a0377b28b7ba61c24b06cb6f06 Mon Sep 17 00:00:00 2001
From: Yannik Schmidt <yannik.schmidt@thermoscan.de>
Date: Sat, 20 Jun 2020 15:07:50 +0200
Subject: [PATCH] change norm calculation

---
 python/backends/trueskillWrapper.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/python/backends/trueskillWrapper.py b/python/backends/trueskillWrapper.py
index d034d55..2da88d9 100644
--- a/python/backends/trueskillWrapper.py
+++ b/python/backends/trueskillWrapper.py
@@ -98,7 +98,7 @@ def predictOutcome(teamA, teamB):
     # than a random point from  normDistB is normA - normB and then the
     # "1 - Cumulative Distribution Function" (cdf) aka the "Survival Function" (sf)
     # of the resulting distribution being greater than zero
-    prob = scipy.stats.norm(loc=muTeamA-muTeamB, scale=math.sqrt(sigmaTeamB**2+sigmaTeamA**2)).sf(0)
+    prob = scipy.stats.norm(loc=muTeamB-muTeamA, scale=sigmaTeamB+sigmaTeamA).sf(0)
     if prob >= 0.5:
         return (0, prob)
     elif prob < 0.5: