It is very important to identify deviation mechanism of price volatility of an industry asset and the affecting factors, and it is important to give the reasonable explanation and measurement to the abnormality of price volatility of the industry asset. This paper adopts heterogeneous panel and...

Motivated by increment process modeling for two correlated random and non-random systems from a discrete-time asset pricing with both risk free asset and risky security, we propose a class of semiparametric regressions for a combination of a non-random and a random system. Unlike classical...

For multivariate nonparametric regression models, existing variable selection methods with penalization require high-dimensional nonparametric approximations in objective functions. When the dimension is high, none of methods with penalization in the literature are readily available. Also,...