V Asimit, L Peng, R Wang, A Yu - Mathematical Finance, 2019 - Wiley Online Library
In various fields of applications such as capital allocation, sensitivity analysis, and systemic risk evaluation, one often needs to compute or estimate the expectation of a random …
M Liu, F Zhu, K Zhu - Journal of Time Series Analysis, 2022 - Wiley Online Library
Inspired by the study of air quality level data, this article proposes a new model for the normalcy‐dominant ordinal time series. The proposed model is based on a new zero‐one …
This paper introduces the concept of risk parameter in conditional volatility models of the form ϵ t= σ t (θ 0) η t and develops statistical procedures to estimate this parameter. For a …
J Zhou, D Li, R Pan, H Wang - Statistica Sinica, 2020 - JSTOR
The multivariate GARCH (MGARCH) model is popular for analyzing financial time series data. However, statistical inferences for MGARCH models are quite challenging, owing to …
K Zhu - Journal of the Royal Statistical Society Series B …, 2016 - academic.oup.com
The paper uses a random-weighting (RW) method to bootstrap the critical values for the Ljung–Box or Monti portmanteau tests and weighted Ljung–Box or Monti portmanteau tests …
R Zhang, S Ling - Econometric Theory, 2015 - cambridge.org
It is well known that the least squares estimator (LSE) of an AR (p) model with iid (independent and identically distributed) noises is n1/αL (n)-consistent when the tail index α …
Y Hoga - Journal of Business & Economic Statistics, 2019 - Taylor & Francis
ABSTRACT ARMA–GARCH models are widely used to model the conditional mean and conditional variance dynamics of returns on risky assets. Empirical results suggest heavy …
K Zhu, S Ling - Journal of the American Statistical Association, 2015 - Taylor & Francis
This article develops a systematic procedure of statistical inference for the auto-regressive moving average (ARMA) model with unspecified and heavy-tailed heteroscedastic noises …
H Masuda - Stochastic Processes and their Applications, 2019 - Elsevier
We address estimation of parametric coefficients of a pure-jump Lévy driven univariate stochastic differential equation (SDE) model, which is observed at high frequency over a …