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EY Urban Heat Island Challenge

$3 500 USD
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Earth Observation
Geospatial Analysis
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Dec 12, 25
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wizzard
How Public and Private test set was split
Platform · 22 Dec 2025, 11:27 · 1

Hi @Joel, how was the public and private test set split, was is it based on stratified sampling or it was just a random split.

The rules dont mention how

Public-Private Split: Zindi maintains a public leaderboard and a private leaderboard for each challenge. The Public Leaderboard includes approximately 30% of the test dataset. The private leaderboard will be revealed at the close of the challenge and contains the remaining 70% of the test set.

It may help me understand why I'm overfitting.

Discussion 1 answer
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meganomaly
Zindi

Hi @wizzard We used a spatial grid split to create the public-private split.

23 Dec 2025, 08:31
Upvotes 1