We propose a semiparametric factor model, which approximates the implied volatility surface (IVS) in a finite dimensional function space. Unlike standard principal component approaches typically used to reduce complexity, our approach is tailored to the degenerated design of IVS data. In...

This study estimates real income and relative price elasticities of demand for US exports and imports of tourism with annual data from 1973-2002. Overall, there is empirical support for the model of tourism expenditure. With one exception, the estimated parameters have the correct signs, and...

We investigate the effects of world income and the relative price of tourism in Thailand on Thailand's exports of tourism. In contrast to previous studies, we test for stationarity and cointegration of the variables of the model. We find that the variables are not stationary in level form, but...