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High-order short-time expansions for ATM option prices under a tempered stable Lévy model
Exponential Levy models CGMY and tempered stable models short-time asymptotics at-the-money option pricing implied volatility.
2012/9/14
The short-time asymptotic behavior of option prices for a variety of models with jumps has received much attention in recent years. In the present work, a novel second-order approximation for ATM opti...
CLOSED-FORM LIKELIHOOD EXPANSIONS FOR MULTIVARIATE DIFFUSIONS
Diffusions likelihood expansions discrete observations
2014/3/13
This paper provides closed-form expansions for the log-likelihood function of multivariate diffusions sampled at discrete time intervals. The coefficients of the expansion are calculated explicitly by...