قارن الطرق

	نموذج هول-وايت	التقلب المحلي (Dupire)	نموذج SABR
المجال	التمويل الكمي	التمويل الكمي	التمويل الكمي
العائلة	Regression model	Regression model	Regression model
سنة النشأة	1990	1994	2002
صاحب الطريقة	John C. Hull and Alan White	Bruno Dupire	Patrick S. Hagan
النوع	Interest Rate Model	Equity/FX Model	Interest Rate Model
المصدر التأسيسي	Hull, J., & White, A. (1990). Pricing interest-rate-derivative securities. Review of Financial Studies, 3(4), 573-592.	Dupire, B. (1994). Pricing with a smile. Risk Magazine, 7(1), 18-20.	Hagan, P. S., Kumar, D., Lesniewski, A. S., & Woodward, D. E. (2002). Managing smile risk. Wilmott Magazine, 1, 84-108.
الأسماء البديلة	Extended Vasicek, Generalized Vasicek	Deterministic Volatility Function, DVF	Stochastic Volatility Model
ذات صلة	4	4	4
الملخص	The Hull-White model (1990) is a one-factor short-rate model with time-dependent mean reversion and volatility, designed to fit the initial yield curve exactly. It generalizes the Vasicek model to allow better calibration to observed bond and derivative prices, and is widely used for pricing interest rate exotics and managing interest rate risk.	Dupire's local volatility model (1994) is a deterministic framework that extracts a term and strike-dependent volatility function from market option prices. Unlike constant volatility, local volatility perfectly fits the observed implied volatility smile and is implemented via finite difference methods for European and American option pricing.	The SABR (Stochastic Alpha-Beta-Rho) model is a stochastic volatility framework introduced by Hagan et al. in 2002 for valuing interest rate derivatives. It captures the smile effect in implied volatility through correlated Brownian motions and has become industry standard for swaption and caplet pricing.