Implementation of Negative Log Likelihood Loss Function

[jkauerl]

Pull Request Template

Description

PR including the implementation for the Negative Log Likelihood Loss Function of this issue #559 . It creates a new file called negative_log_likelihood.rs with the function called neg_log_likelihood. This implementation is for binary classifications, but can be expanded to higher dimensions.

Type of change

• [x] New feature (non-breaking change which adds functionality)

Checklist:

• [x] I ran bellow commands using the latest version of rust nightly.
• [x] I ran cargo clippy --all -- -D warnings just before my last commit and fixed any issue that was found.
• [x] I ran cargo fmt just before my last commit.
• [x] I ran cargo test just before my last commit and all tests passed.
• [x] I added my algorithm to the corresponding mod.rs file within its own folder, and in any parent folder(s).
• [x] I added my algorithm to DIRECTORY.md with the correct link.
• [x] I checked COUNTRIBUTING.md and my code follows its guidelines.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 95.06%. Comparing base (f8096d2) to head (7771e43). Report is 3 commits behind head on master.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #734 +/- ## ========================================== + Coverage 95.04% 95.06% +0.02% ========================================== Files 305 307 +2 Lines 22674 22772 +98 ========================================== + Hits 21550 21648 +98 Misses 1124 1124 ```

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[vil02]

@jkauerl are you still working on that?

[jkauerl]

@jkauerl are you still working on that?

Yes, I implemented most of the suggestions, and do not know what else is missing.