SheffieldML/GPy

Remove GPy/util/symbolic.py, GPy/util/functions.py and GPy/util/ln_diff_erfs.py

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#930 opened on Jun 8, 2021

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good first issue

Description

These source files contain logic for symbolic math and automatic differentiation. They are deprecated now due to the maturation of other autodifferentiation packages (e.g. JAX, PyTorch, TensorFlow). As a result, they are no longer necessary and represent scope creep for the GPy project.

This issue will be considered solved when:

  1. The source files in the title are removed
  2. The tests are adjusted to accommodate their removal

Contributor guide

Tech stack
python
Domain
backendmachine learning
Issue type
refactor
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
fresh
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
clear
Prerequisites
Basic PythonFamiliarity with GPy codebaseUnderstanding of unit testing
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
85
Research direction
Locate the files GPy/util/symbolic.py, GPy/util/functions.py, and GPy/util/ln diff erfs.py in the repository. Remove them using git. Then, run the test suite (likely using pytest or nosetests) to identify any failing tests that reference these files. Update those tests to remove imports and dependencies. No new functionality is needed; this is a cleanup task.