Reword comment

date_selection.py

@@ -26,8 +26,7 @@ def rank_dates_by_wilson(articles, start_date, end_date):
                 if pub_date != mentioned_date and start_date <= mentioned_date <= end_date:
                     pub_to_mention_count[(pub_date, mentioned_date)] += 1
 
-    # the edge weight for each published -> mentioned pair
-    # is how often it occurs * the temporal distance between the dates
+    # the edge weight for each published -> mentioned pair is (occurrence count) * (temporal distance between the dates)
     edges = []
     for pub_date, mentioned_date in pub_to_mention_count.keys():
         date_diff = (datetime.strptime(pub_date, '%Y-%m-%d') - datetime.strptime(mentioned_date, '%Y-%m-%d')).days