This paper proposes an automatic procedure to identify threshold autoregressive models and specify the values of thresholds. The proposed procedure is based on the time-varying estimation of the parameters using an arranged autoregression. The proposed method not only allows for the automatic...

It is well-known that economic and financial time series are characterized by nonlinearities. The literature does not agree, however, on the actual causes of such nonlinearities. In this paper, I investigate whether dynamics at different frequencies present different degree of nonlinearity, and...

In this paper nonlinear structures in German bank stock returns are investigated in a stochastic modelling framework. In the first step we show the existence of a nonlinear return structure by means of the McLeod-Li and the BDS test. In the second step we focus our analysis on the kinds of...