# Horse racing as an ML ranking problem: 1.18M runners, walk-forward validation and a very strong market baseline [D] > Source: > Published: 2026-09-14 01:00:28+00:00 Hi 👋 long time lurker It’s been a few years since the last post about Horse Racing within this sub. A few years ago I was reading a popular science book and came across the story Bill Benter and the statistical models his team developed for Hong Kong racing. What stayed with me wasn’t simply the ide