Research output: Contribution to journal › Article › peer-review
Network quantile autoregression. / Zhu, Xuening; Wang, Weining; Wang, Hansheng; Härdle, Wolfgang Karl .
In: Journal of Econometrics, Vol. 212, No. 1, 09.2019, p. 345-358.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Network quantile autoregression
AU - Zhu, Xuening
AU - Wang, Weining
AU - Wang, Hansheng
AU - Härdle, Wolfgang Karl
PY - 2019/9
Y1 - 2019/9
N2 - The complex tail dependency structure in a dynamic network with a large number of nodes is an important object to study. We propose a network quantile autoregression model (NQAR), which characterizes the dynamic quantile behavior. Our NQAR model consists of a system of equations, of which we relate a response to its connected nodes and node specific characteristics in a quantile autoregression process. We show the estimation of the NQAR model and the asymptotic properties with assumptions on the network structure. For this propose we develop a network Bahadur representation that gives us direct insight into the parameter asymptotics. Moreover, innovative tail-event driven impulse functions are defined. Finally, we demonstrate the usage of our model by investigating the financial contagions in the Chinese stock market accounting for shared ownership of companies. We find higher network dependency when the market is exposed to a higher volatility level.
AB - The complex tail dependency structure in a dynamic network with a large number of nodes is an important object to study. We propose a network quantile autoregression model (NQAR), which characterizes the dynamic quantile behavior. Our NQAR model consists of a system of equations, of which we relate a response to its connected nodes and node specific characteristics in a quantile autoregression process. We show the estimation of the NQAR model and the asymptotic properties with assumptions on the network structure. For this propose we develop a network Bahadur representation that gives us direct insight into the parameter asymptotics. Moreover, innovative tail-event driven impulse functions are defined. Finally, we demonstrate the usage of our model by investigating the financial contagions in the Chinese stock market accounting for shared ownership of companies. We find higher network dependency when the market is exposed to a higher volatility level.
U2 - 10.1016/j.jeconom.2019.04.034
DO - 10.1016/j.jeconom.2019.04.034
M3 - Article
VL - 212
SP - 345
EP - 358
JO - Journal of Econometrics
JF - Journal of Econometrics
SN - 0304-4076
IS - 1
ER -