pymc-devs / pymc-devs/pytensor

Sparsity support in pytensor

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enhancement gradients linalg
Dominant language
Python
Stars
644
Forks
208
Avg merge
2d 14h
Merged PRs (30d)
16

Description

Description

I'm investing implementing ALS in pytensor which is usually implemented with sparsity constructs (see implicit for reference). I quickly looked around and saw this older thread where someone asked for sparsity support. @jessegrabowski gave a first pass answer, but mentioned the support is subpar. Opening this to track any enhancements we could bring.

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 reading the linked implicit ALS API reference and the PyMC discourse thread, then review PyTensor's current sparsity support. The issue does not name files, tests, or an entry point, so first define which sparsity enhancements are required for ALS and how support will be validated.

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
Needs clarification
Newbie friendliness
25/100

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