Browsing Category: Data Techniques

sports betting backtest leakage

Sports Betting Backtests Can Look Accurate for the Wrong Reason: The Hidden Danger of Future Data

A sports betting model can appear accurate in historical testing while using information that was not available when its predictions were supposedly made. This problem, called data leakage, can make ordinary models look unusually powerful and turn realistic betting costs into misleading profitability estimates. The central question is simple: Could the analyst actually have known […]