Dana Van Aken

Links to knob data in are invalid when plotting multiple metrics

1

In the session view, the knob data links under "Filtered Results" are invalid when after plotting 2+ metrics. (The knob data links are valid when only plotting a single metric)....

The three GPR implementations in our ML lib are scattered and need refactoring. Suggested changes: - Move the [numpy](https://github.com/cmu-db/ottertune/blob/master/server/analysis/gp.py) and [tensorflow](https://github.com/cmu-db/ottertune/blob/master/server/analysis/gp_tf.py) implementations into the [gpr](https://github.com/cmu-db/ottertune/tree/master/server/analysis/gpr) module (this is currently where...