Update presentations.md

Author: jrudoler

presentations.md

@@ -21,7 +21,7 @@ Get on the [listserv for announcements](https://groups.google.com/forum/#!forum/
 | Feb 10     | None  | TBD   |
 | Feb 17     | None  | None  |
 | Feb 24     | Melanie Segado  | How to pretrain a model |
-| Mar 3      | Joey Rudoler| TBD  |
+| Mar 3      | Joey Rudoler| Representations in neural networks  |
 | Mar 10     | TBD  | TBD   |
 | Mar 17     | TBD  | TBD   |
 | Mar 24     | TBD  | TBD   |