เปรียบเทียบวิธี

	ทฤษฎีค่าสุดขีด (Extreme Value Theory: EVT)	Conditional Value-at-Risk (Expected Shortfall)	Exponential GARCH (EGARCH)	ความผันผวนที่รับรู้ได้และแบบจำลอง HAR
สาขาวิชา	การเงิน	การเงิน	เศรษฐมิติ	การเงิน
ตระกูล	Regression model	Regression model	Regression model	Regression model
ปีกำเนิด	2001	2000	1991	2009
ผู้ริเริ่ม	Coles (textbook treatment); McNeil, Frey & Embrechts	Rockafellar & Uryasev (2000); Acerbi & Tasche (2002)	Nelson	Corsi (HAR model); Andersen, Bollerslev, Diebold & Labys (realized volatility)
ประเภท	Tail / extreme-event model	Coherent tail-risk measure	Conditional volatility model (asymmetric GARCH variant)	Time-series regression of realized variance
แหล่งต้นตำรับ	Coles, S. (2001). An Introduction to Statistical Modeling of Extreme Values. Springer. ISBN: 978-1852334598	Rockafellar, R. T. & Uryasev, S. (2000). Optimization of Conditional Value-at-Risk. Journal of Risk, 2(3), 21-41.	Nelson, D. B. (1991). Conditional Heteroskedasticity in Asset Returns: A New Approach. Econometrica, 59(2), 347-370.	Corsi, F. (2009). A Simple Approximate Long-Memory Model of Realized Volatility. Journal of Financial Econometrics, 7(2), 174-196.
ชื่อเรียกอื่น	EVT, generalized extreme value, generalized Pareto distribution, peaks over threshold	CVaR, expected shortfall, average value-at-risk, tail VaR	exponential GARCH, Nelson's EGARCH, asymmetric GARCH, EGARCH — Üstel GARCH	realized variance, HAR model, heterogeneous autoregressive model of realized volatility, HAR-RV
ที่เกี่ยวข้อง	5	5	4	5
สรุป	Extreme Value Theory is a statistical framework for modelling the rare events that live in the tail of a probability distribution. As developed in Coles (2001) and applied to risk by McNeil, Frey & Embrechts (2005), it offers two standard routes: the Generalized Extreme Value (GEV) distribution for block maxima and the Generalized Pareto Distribution (GPD), used in the peaks-over-threshold approach, for exceedances above a high threshold.	Conditional Value-at-Risk (CVaR), also called Expected Shortfall, is a coherent tail-risk measure that quantifies the conditional expectation of losses beyond the Value-at-Risk threshold. It was introduced for optimization by Rockafellar and Uryasev (2000) and shown to be coherent by Acerbi and Tasche (2002), and it has replaced VaR as the regulatory standard under Basel III/IV.	EGARCH is an asymmetric GARCH variant, introduced by Nelson in 1991, that models the leverage effect in which bad news raises volatility more than good news of the same size. It captures the negative-shock asymmetry of financial return series by modelling the logarithm of the conditional variance.	Realized volatility estimates an asset's variance directly from high-frequency intraday returns rather than from a parametric latent process. The Heterogeneous Autoregressive (HAR) model of Corsi (2009), building on the realized-volatility framework of Andersen, Bollerslev, Diebold and Labys (2003), forecasts this measure by combining daily, weekly, and monthly volatility components, and is a strong alternative to GARCH for volatility prediction.