rapidsai/cuml

[FEA] Implement `adjusted_mutual_info_score`

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#7,294 opened on Oct 2, 2025

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feature requestgood first issue

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Description

It would be great if adjusted_mutual_info_score were made available in cuml, esp. since there is some evidence that it is preferable to the ARI in the presence of unbalanced cluster sizes, and is slower to calculate.

Contributor guide

Research direction
Study the existing mutual information implementation in cuML and the sklearn adjusted mutual info score. Implement the adjusted mutual information score using CUDA for GPU acceleration.
Tech stack
python
Domain
machine learningdata
Issue type
Feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-2 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
PythonGit
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
60