This article examines the null limit distribution of quasi-likelihood ratio (QLR) statistic for testing linearity condition against smooth transition autoregressive (STAR) model. We explicitly show that QLR test weakly converges to a functional multivariate Gaussian process under linearity, which is done by resolving issue identification problem arises in two different ways null. In contrast wi...

This paper considers a linear model with time varying parameters controlled by a neural network to analyze and forecast nonlinear time series.We show that this formulation, called neural coefficient smooth transition autoregressive (NCSTAR) model, is in close relation to the threshold autoregressive (TAR) model and the smooth transition autoregressive (STAR) model with the advantage of naturall...

Regression analysis with geographic information needs to take into consideration the inherent spatial autocorrelation and heterogeneity of the data. Due to such spatial effects, it is found that local regression such as the geographically weighted regression (GWR) tends to capture the relationships better. In addition, in panel data analysis, the variable coefficient panel regression can borrow...

Detecting and modelling structural changes in time series models have attracted great attention while relatively little effort has been paid to the test of structural changes in panel data models despite their increasing importance in economics and finance. In this paper, we propose a new approach to testing structural changes in panel data models with cross-sectional dependence. The idea is to...

We empirically analyze Taylor-type equations for short-term interest rates in the United Kingdom using quarterly data from 1970Q1 to 2006Q2. Starting from strong evidence against a simple linear Taylor rule, we model nonlinearities using logistic smooth transition regression (LSTR) models. The LSTR models with time varying parameters consistently track actual interest rate movements better than...

in the present study, pistachio production and trade and influential factors on its exports in iran and the usa are compared the the .using the annual data from 1970 to 2011; this study aimed to analyze the effects of pistachio price and the effects of food security. moreover, the relationship between exchange rate and pistachio export in the iranian economy was analyzed through examining a non...

Testing the Specification of the Mincer Wage Equation I perform the joint estimation of a reduced-form dynamic model of the transition from one grade level to the next, and a Mincer wage equation, using panel data taken from the NLSY. A very high degree of flexibility is achieved by approximating the distributions of idiosyncractic grade transition shocks and wage shocks with high dimensional n...

This article explores nonlinearities in the response of speculators’ trading activity to price changes in live cattle, corn, and lean hog futures markets. Analyzing weekly data from March 4, 1997 to December 27, 2005, we reject linearity in all of these markets. Using smooth transition regression models, we find a similar structure of nonlinearities with regard to the number of different regime...