[doc] Update competition winning solutions list with recent entries#12087
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trivialfis merged 1 commit intodmlc:masterfrom Mar 16, 2026
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Add three verified 1st-place wins where XGBoost was a primary model: - ACM RecSys Challenge 2021 (Schifferer, Deotte, Titericz, Liu) - Kaggle Playground Series S5E2 Backpack Prediction (Deotte, Feb 2025) - March Machine Learning Mania 2025 (Odeh, $50K prize)
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Pull request overview
Updates the demo documentation by adding three recent 1st-place competition solutions where XGBoost was a primary model, expanding the “winning solutions” list referenced in #6173.
Changes:
- Added ACM RecSys Challenge 2021 1st-place solution entry with writeup/paper links
- Added Kaggle Playground Series S5E2 (Feb 2025) 1st-place solution entry with discussion link
- Added March Machine Learning Mania 2025 1st-place solution entry with writeup link
Comments suppressed due to low confidence (1)
demo/README.md:1
- These new bullets use slightly different phrasing than nearby entries (e.g., many lines above use 'winner in' and sometimes 'Link to [Discussion]' with consistent capitalization). Consider adjusting the wording/capitalization to match the prevailing style in this list to keep it easy to scan and consistent.
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trivialfis
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Mar 16, 2026
PavelGuzenfeld
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Mar 19, 2026
Add section documenting 3 merged PRs (dmlc#12087, dmlc#12089, dmlc#12094), 1 open PR (dmlc#12086), and 3 closed/superseded PRs.
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Summary
Add three recent 1st-place competition wins where XGBoost was a primary model
to the winning solutions list in
demo/README.md:Ensemble of 5 XGBoost + 3 neural network models.
Single XGBoost model with 500 engineered features.
XGBoost outperformed CatBoost and LightGBM.
All entries are verified with public writeups/discussions.
Contributes to #6173