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Predikce měnových kurzů
Dror, Marika ; Pánková, Václava (advisor) ; Arltová, Markéta (referee) ; Hančlová, Jana (referee)
The thesis investigates different exchange rate models and their forecasting performance. The work takes previous literature overview and summarize their findings. Despite the significant amount of papers which were done on the topic of exchange rate forecast, basically none of them cannot find an appropriate model which would outperform a forecast of a simple random walk in every horizon or for any currency pair. However, there are some positive findings in specific cases (e.g. for specific pair or for specific time horizon). The study provides up-to-date analysis of four exchange rates (USD/CZK, USD/ILS, USD/GBP and USD/EUR) for the period of time from January 2000 to August 2013 and analyse forecasting performance of seven exchange rate models (uncovered interest rate parity model, purchasing power parity model, monetary model, monetary model with error correction, Taylor rule model, hidden Markov model and ESTAR model). Although, the results are in advantage of Taylor rule model, especially for the exchange rate of USD/CZK, I cannot prove that the forecasting performance is significantly better than the random walk model. Except of the overall analysis, the work suppose instabilities in the time. Stock and Watson (2003) found that the forecast predictability is not stable over time. As a consequence, the econometric model can give us better forecast than random walk process at some period of time, however at other period, the forecasting ability can be worse than random walk. Based on Fluctuation test of Giacomini and Rossi (2010a) every model is analysed how the out-of-sample forecast ability changes over time.
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Does 'news' approach outperform monetary model in exchange rate determination?
Weichetová, Lenka ; Jílek, Josef (advisor) ; Štěpánek, Pavel (referee)
This thesis aims to contribute in the field of exchange rate determination. Firstly, it sums results of previous studies (theoretical as well as empirical ones). Consequently, it investigates two approaches to exchange rate determination, and compares their theoretical and empirical performance. Firstly, monetary model is introduced, and secondly 'news' model is presented. Since 'news' model incorporates rational expectations and considers interest rate endogenous, it is expected to give better results in comparison with monetary model. Six exchange rates were chosen for the empirical analysis. They are analyzed in period July 2000 -- June 2012. As expected, 'news' model outperforms monetary model. However, since the volatility of exchange rate is much bigger in reality than both of the models are able to explain, neither of the models can be considered as satisfactory. It is the same result which has been presented in older studies that investigated these models.
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