StackRating
An Elo-based rating system for Stack Overflow
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Answers and rating deltas for
Aggregate or create a third column on basis of two columns ,using Dplyr Patient_id, and Date
Author
Votes
Δ
Vlo
0
-0.04
akrun
0
+0.04
Last visited: Jun 24, 2017, 4:58:10 PM