icecube/skyllh

Add King distribution as spatial PDF

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#285 opened on Mar 31, 2026

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enhancementgood first issue

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Description

Michael implemented it for csky. There is a draft PR at the moment: https://github.com/icecube/csky/pull/207.

It could be a nice and efficient replacement for the ultra-complex KDE implementation if it also produces unbiased MLEs.

For starters, I would like to test this on the NT v005p04.

Contributor guide

Research direction
Study the existing KDE implementation in skyllh and the draft PR in csky for King distribution. Understand the mathematical formulation and how to integrate it as a spatial PDF. Test on NT v005p04 dataset.
Tech stack
python
Domain
backend
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.
Half day
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
Pythonstatistics
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
50