方法证据记录
EGARCH model
The Exponential GARCH (EGARCH) model, introduced by Nelson (1991), extends the standard GARCH framework by modelling the logarithm of conditional variance. This ensures variance is always positive without parameter constraints and, crucially, allows negative and positive shocks to have asymmetric effects on volatility — capturing the well-known leverage effect in financial markets.
源记录
引文逐字复制自方法源记录。这些引文不代表任何层级的验证。
Exponential Generalized Autoregressive Conditional Heteroscedasticity Model
分类方法记录 · regression-model / econometrics
- Nelson, D. B. (1991). Conditional heteroskedasticity in asset returns: A new approach. Econometrica, 59(2), 347–370. · DOI 10.2307/2938260
- Bollerslev, T. (1986). Generalized autoregressive conditional heteroskedasticity. Journal of Econometrics, 31(3), 307–327. · DOI 10.1016/0304-4076(86)90063-1
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