Polynomial Degree Optimization

Definition

Polynomial degree optimization represents the systematic selection of the optimal order for a mathematical function used to fit empirical volatility surfaces or pricing models in cryptocurrency derivatives. By adjusting the complexity of a polynomial regression, analysts effectively balance the trade-off between model bias and variance to prevent overfitting to noisy market data. This process ensures that implied volatility curves remain numerically stable during periods of high liquidity stress or extreme price dislocation.