No more nil handling for TVD.

evansenter · Jun 26, 2012 · 9d91643 · 9d91643
1 parent 4d59d65
commit 9d91643
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/lib/diverge.rb b/lib/diverge.rb
@@ -36,7 +36,7 @@ def jensen_shannon
   alias :js :jensen_shannon
 
   def total_variation_distance
-    0.5 * p.zip(q).inject(0.0) { |sum, (i, j)| sum + ((i || 0) - (j || 0)).abs }
+    0.5 * p.zip(q).inject(0.0) { |sum, (i, j)| sum + (i - j).abs }
   end
 
   alias :tvd :total_variation_distance