fix max==0&&min==0

1 files changed, 1 insertions, 0 deletions

diff --git a/rampfion.rb b/rampfion.rb
index 479ca2b..23bedcb 100755
--- a/rampfion.rb
+++ b/rampfion.rb
@@ -67,6 +67,7 @@ end
 def adjust_model_scores kbest, factor
   min = kbest.map{ |k| k.scores[:decoder] }.min
   max = kbest.map{ |k| k.scores[:decoder] }.max
+  return if min==0&&max==0
   kbest.each { |k| k.scores[:decoder] = factor*((k.scores[:decoder]-min)/(max-min)) }
 end