Feature Drift

Definition

Feature drift represents a degradation in predictive performance occurring when the statistical properties of input variables diverge from the distribution utilized during the initial training of a quantitative model. In cryptocurrency derivatives, this phenomenon often manifests as market microstructure shifts where historical relationships between spot prices, funding rates, and volatility surfaces no longer hold under new liquidity regimes. Analysts observe this when latent variables governing price discovery evolve, rendering previously optimized trading algorithms or Greeks-based hedging strategies suboptimal.