So sánh phương pháp

	Định giá Crank-Nicolson	Biến động cục bộ (Dupire)
Lĩnh vực	Tài chính định lượng	Tài chính định lượng
Họ	Machine learning	Regression model
Năm ra đời	1947	1994
Người khởi xướng	John Crank and Phyllis Nicolson	Bruno Dupire
Loại	PDE Solver	Equity/FX Model
Công trình gốc	Crank, J., & Nicolson, P. (1947). A practical method for numerical evaluation of solutions of partial differential equations of the heat-conduction type. Mathematical Proceedings of the Cambridge Philosophical Society, 43(1), 50-67.	Dupire, B. (1994). Pricing with a smile. Risk Magazine, 7(1), 18-20.
Tên gọi khác	CN Method, Implicit Finite Difference	Deterministic Volatility Function, DVF
Liên quan	3	4
Tóm tắt	The Crank-Nicolson method is a widely-used implicit finite difference scheme for solving PDEs in option pricing. It provides second-order accuracy in both space and time, unconditional stability, and can efficiently price derivatives with early exercise features (American options) or complex boundary conditions.	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.