পদ্ধতির তুলনা করুন

	Heston (১৯৯৩) প্রবর্তিত স্টোকাস্টিক ভলাটিলিটি মডেল	GARCH মডেল (ভলাটিলিটি পূর্বাভাস)
ক্ষেত্র	অর্থায়ন	অর্থমিতি
পরিবার	Regression model	Regression model
উদ্ভবের বছর	1993	1986
প্রবর্তক	Steven L. Heston	Tim Bollerslev
ধরন	Continuous-time stochastic volatility model	Conditional volatility model
মৌলিক উৎস	Heston, S. L. (1993). A Closed-Form Solution for Options with Stochastic Volatility with Applications to Bond and Currency Options. Review of Financial Studies, 6(2), 327-343.	Bollerslev, T. (1986). Generalized Autoregressive Conditional Heteroskedasticity. Journal of Econometrics, 31(3), 307–327.
অপর নাম	Heston model, SV model, continuous-time stochastic volatility, Stokastik Volatilite Modeli (Heston, SV)	GARCH, GARCH(1,1), conditional volatility model, GARCH Modeli (Oynaklık Tahmini)
সম্পর্কিত	5	5
সারসংক্ষেপ	The stochastic volatility model is a continuous-time option-pricing and risk framework in which volatility follows its own random process rather than staying constant. The Heston model, introduced by Steven Heston in 1993, gives the variance a mean-reverting square-root (CIR) dynamic and yields a closed-form option price; it is the continuous-time counterpart of GARCH.	The Generalized Autoregressive Conditional Heteroskedasticity (GARCH) model, introduced by Tim Bollerslev in 1986, models the time-varying conditional variance of a financial time series. It captures volatility clustering and the ARCH effect, and is the standard tool for estimating risk and volatility in return series.