There are a lot of DBAs who still don't even know T-SQL programming, execution plan analysis, or SSIS. If you havn't already, then learn that before straying into the deep end of the pool with something like machine learning. I mean, folks expect the DBA to be the smartest guy in the room when it comes to SQL, and they depend on you to keep the SQL Server instance running smoothly. However, most organizations are doing data science anytime soon, and even if they were, they'd hire a dedicated person with a specialization in that area or outsource it to consultants... not the in-house DBA.