Dynamic Foreign Currency Trading Guided by Adaptive Forecasting

An-Sing Chen and Mark T. Leung
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An-Sing Chen: Department of Finance, National Chung Cheng University, Ming-Hsiung, Chia-Yi, Taiwan 621, R.O.C
Mark T. Leung: Department of Operations and Decision Technologies, School of Business, Indiana University, Bloomington, IN 47405, USA

Review of Pacific Basin Financial Markets and Policies (RPBFMP), 1998, vol. 01, issue 03, 383-418

Abstract: The difficulty in predicting exchange rates has been a long-standing problem in international finance as most standard econometric methods are unable to produce significantly better forecasts than the random walk model. Recent studies provide some evidence for the ability of multivariate time-series models to generate better forecasts. At the same time, artificial neural network models have been emerging as alternatives to predict exchange rates. In this paper we propose a nonlinear forecast model combining the neural network with the multivariate econometric framework. This hybrid model contains two forecasting stages. A time series approach based on Bayesian Vector Autoregression (BVAR) models is applied to the first stage of forecasting. The estimates from BVAR are then used by the nonparametric General Regression Neural Network (GRNN) to generate enhanced forecasts. To evaluate the economic impact of forecasts, we develop a set of currency trading rules guided by these models. The optimal conditions implied by the investment rules maximize the expected profits given the expected changes in exchange rates and the interest rate differentials between domestic and foreign countries. Both empirical and simulation experiments suggest that the proposed nonlinear adaptive forecasting model not only produces better forecasts but also results in higher investment returns than other types of models. The effect of risk aversion is also considered in the investment simulation.

JEL-codes: G1 G2 G3 (search for similar items in EconPapers)
Date: 1998
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DOI: 10.1142/S0219091598000247

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