Reset adaptive threshold between epochs

[djdameln]

Description

• Add call to reset method of AdaptiveThreshold metrics. This makes sure that the targets and predictions of previous epochs are cleared before computing the threshold.

• AdaptiveThreshold class now inherits from PrecisionRecallCurve to prevent having to re-implement update and reset methods.

• Fixes question about AdaptiveThreshold, possible bug? #457

Changes

• Bug fix (non-breaking change which fixes an issue)
• Refactor (non-breaking change which refactors the code base)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

Checklist

• My code follows the pre-commit style and check guidelines of this project.
• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing tests pass locally with my changes

[samet-akcay]

Thanks for addressing this

[ashwinvaidya17]

Thanks