Calculate balanced precision

[kelly-sovacool]

Issues

• Resolves Calculate the area under the balanced precision-recall curve (AUBPRC) #330.

Change(s) made

• New function calc_balanced_precision() implements Equation 1 & 7 from Wu et al. 2021 (10.1016/j.ajhg.2021.08.012).
• Examples show how to calculate and plot balanced precision and AUBPRC.

Checklist

(Strikethrough any points that are not applicable.)

• Write unit tests for any new functionality or bug fixes.
• Update docs if there are any API changes:
  • roxygen comments
  • [ ] vignettes Opened New vignette for visualizing performance and feature importance #334 to do this later.
• Update NEWS.md if this includes any user-facing changes.
• The check workflow succeeds on your most recent commit. This is always required before the PR can be merged.

[codecov-commenter]

Codecov Report

Patch coverage: 100.00% and no project coverage change.

Comparison is base (1c5fa41) 98.26% compared to head (1f7be32) 98.26%.

❗ Current head 1f7be32 differs from pull request most recent head bfa2345. Consider uploading reports for the commit bfa2345 to get more accurate results

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #333   +/-   ##
=======================================
  Coverage   98.26%   98.26%           
=======================================
  Files          13       13           
  Lines        1152     1155    +3     
=======================================
+ Hits         1132     1135    +3     
  Misses         20       20           

Impacted Files	Coverage Δ
R/performance.R	100.00% <100.00%> (ø)
R/plot.R	79.16% <100.00%> (ø)

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[sklucas]

Adding functionality for calculating balanced precision - approved.