lmcinnes / lmcinnes/pynndescent

Serialization

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Dominant language
Python
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Forks
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Description

Some objects in pynndescent are not serializable by pickle or even cloudpickle, for example pynndescent.rp_trees.FlatTree. This prevents serialization of UMAP fit objects when pynndescent is used.

Relevant UMAP issue:
lmcinnes/umap#273

Contributor guide

Open the contributing guide

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 reproducing the serialization failure for pynndescent.rp_trees.FlatTree with pickle and cloudpickle, then check how it affects UMAP fit objects as described in the linked UMAP issue. Trace the relevant object state and verify that these objects can be serialized and restored successfully.

Written by the indexing model from the issue text.

Assessment

Tech stack
python
Domain
backend
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
35/100

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