Implementation of Average Marginal Ranking Loss Function

[jkauerl]

Pull Request Template

Description

PR including the implementation for the Marginal Ranking Loss Function of this issue #559 . It creates a new file called marginal_ranking.rs with the function called mrg_ranking_loss. This implementation is inspired on the documentation of PyTorch of Marginal Ranking.

Type of change

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

Checklist:

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

PD: Im new to Rust and Open Source so I would love a clarification regarding the items I did not checked. Also let me know if I should squash the commits. Last PR had a wrong branch name #733.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 95.06%. Comparing base (1d9c510) to head (c7cb14b).
Report is 36 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #742      +/-   ##
==========================================
+ Coverage   94.95%   95.06%   +0.11%     
==========================================
  Files         303      309       +6     
  Lines       22533    22796     +263     
==========================================
+ Hits        21396    21672     +276     
+ Misses       1137     1124      -13     

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[jkauerl]

Made some pretty major updates following suggestions I have recieved before.