lmcinnes / lmcinnes/umap

Forcing exact high dimensional graph computation

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Dominant language
Python
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Description

While performing some experiments and reading the code it seems for more than N(=4096) points the algorithm always does an approximate nearest neighbor search. Is there a way to force it to search for the exact nearest neighbors?

I don't want to pass the NxN matrix externally as I'd like to have the transform() functionality available.

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 by tracing the transform() entry point and the N=4096 nearest-neighbor decision described in the issue. Determine the scope of supporting exact nearest-neighbor search without requiring an external NxN matrix; done means transform() remains available while using exact neighbors for high-dimensional inputs.

Written by the indexing model from the issue text.

Assessment

Tech stack
python
Domain
machine-learning
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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