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Answers and rating deltas for
Create recency variable using previous observation in data.table
| Author | Votes | Δ |
|---|---|---|
| Frank | 2 | 0.00 |
Last visited: Dec 14, 2017, 4:32:24 PM
| Author | Votes | Δ |
|---|---|---|
| Frank | 2 | 0.00 |