lmcinnes / lmcinnes/umap

Docstring issues in random_projection_split functions

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documentation help wanted
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Description

Hi,

[angular_random_projection_split](https://github.com/lmcinnes/umap/blob/d286224a86dfe730c76f082c6f523b69b57bd0f8/umap/rp_tree.py#L29-L53), [euclidean_random_projection_split](https://github.com/lmcinnes/umap/blob/d286224a86dfe730c76f082c6f523b69b57bd0f8/umap/rp_tree.py#L132-L156), [sparse_angular_random_projection_split](https://github.com/lmcinnes/umap/blob/d286224a86dfe730c76f082c6f523b69b57bd0f8/umap/rp_tree.py#L221-L250) and [sparse_euclidean_random_projection_split](https://github.com/lmcinnes/umap/blob/d286224a86dfe730c76f082c6f523b69b57bd0f8/umap/rp_tree.py#L331-L360) all have the same docstring issue (the Returns section doesn't match what is returned by the function).

`hyperplane_offset` seems to always be a float. `hyperplane` (or `hyperplane_vector`) seems a bit harder to infer (it will likely be different for different functions).

#### angular_random_projection_split

https://github.com/lmcinnes/umap/blob/d286224a86dfe730c76f082c6f523b69b57bd0f8/umap/rp_tree.py#L45-L53

https://github.com/lmcinnes/umap/blob/d286224a86dfe730c76f082c6f523b69b57bd0f8/umap/rp_tree.py#L128

#### euclidean_random_projection_split

https://github.com/lmcinnes/umap/blob/d286224a86dfe730c76f082c6f523b69b57bd0f8/umap/rp_tree.py#L148-L156

https://github.com/lmcinnes/umap/blob/d286224a86dfe730c76f082c6f523b69b57bd0f8/umap/rp_tree.py#L217

#### sparse_angular_random_projection_split

https://github.com/lmcinnes/umap/blob/d286224a86dfe730c76f082c6f523b69b57bd0f8/umap/rp_tree.py#L242-L250

https://github.com/lmcinnes/umap/blob/d286224a86dfe730c76f082c6f523b69b57bd0f8/umap/rp_tree.py#L327

#### sparse_euclidean_random_projection_split

https://github.com/lmcinnes/umap/blob/d286224a86dfe730c76f082c6f523b69b57bd0f8/umap/rp_tree.py#L352-L360

https://github.com/lmcinnes/umap/blob/d286224a86dfe730c76f082c6f523b69b57bd0f8/umap/rp_tree.py#L436

Contributor guide

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start in umap/rp_tree.py by reading the Returns sections and return statements of angular_random_projection_split, euclidean_random_projection_split, sparse_angular_random_projection_split, and sparse_euclidean_random_projection_split. Update each docstring so its documented values and types match what the function returns, including hyperplane_offset and hyperplane or hyperplane_vector. Done means all four Returns sections accurately describe their outputs.

Written by the indexing model from the issue text.

Assessment

Tech stack
python
Domain
documentation
Issue type
Documentation
Difficulty
2/5
Estimated time
1-3 hours
Activity status
Stale
Clarity
Clearly specified
Newbie friendliness
52/100

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