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Horse racing tackled as ML ranking problem with 1.18M runners

A personal project called Hoofs has been developed to tackle horse racing as a machine learning ranking problem, focusing on British and Irish races. The project has compiled approximately 1.18 million historical runner records and a feature bank of around 1,700 potential signals per runner. Models estimate win and place probabilities, with evaluation conducted chronologically using walk-forward validation to prevent future information leakage. While the model-only win AUC is around 0.729, the market baseline shows a stronger AUC of approximately 0.790, highlighting the challenge of extracting information not already reflected in market prices. AI

IMPACT Demonstrates the application of ML ranking and walk-forward validation to complex, real-world prediction problems.

RANK_REASON The item describes a personal project applying ML techniques to a specific domain (horse racing) and presents results, fitting the research category. [lever_c_demoted from research: ic=1 ai=0.7]

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AI-generated summary · Google Gemini · from 1 sources. How we write summaries →

Horse racing tackled as ML ranking problem with 1.18M runners

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The item describes a personal project applying ML techniques to a specific domain (horse racing) and presents results, fitting the research category. [lever_c_demoted from research: ic=1 ai=0.7]
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COVERAGE [1]

  1. r/MachineLearning TIER_1 English(EN) · /u/gcampb41 ·

    Horse racing as an ML ranking problem: 1.18M runners, walk-forward validation and a very strong market baseline [D]

    <!-- SC_OFF --><div class="md"><p>Hi 👋 long time lurker </p> <p>It’s been a few years since the last post about Horse Racing within this sub. </p> <p>A few years ago I was reading a popular science book and came across the story Bill Benter and the statistical models his team dev…