add explicit set requirement

cantino · Mar 7, 2020 · 2732b8f · 2732b8f
1 parent abd566a
commit 2732b8f
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/lib/reckon/cosine_similarity.rb b/lib/reckon/cosine_similarity.rb
@@ -1,4 +1,5 @@
 require 'matrix'
+require 'set'
 
 # Implementation of consine similarity using TF-IDF for vectorization.
 # Used to suggest which account a transaction should be assigned to