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Working Paper
Virtue or Mirage? Complexity in Exchange Rate Prediction
This paper investigates whether the “virtue of complexity” (VoC), documented in equity return prediction, extends to exchange rate forecasting. Using nonlinear Ridge regressions with Random Fourier Features (Ridge–RFF), we compare the predictive performance of complex models against linear regression and the robust random walk benchmark. Forecasts are constructed across three sets of economic fundamentals—traditional monetary, expanded monetary and non-monetary, and Taylor-rule predictors—with nominal complexity varied through rolling training windows of 12, 60, and 120 months. Our ...
Discussion Paper
Measuring Global Bank Complexity
Paraphrasing a famous Supreme Court opinion: “I know bank complexity when I see it.” This expression probably speaks to the truth that, if we look at a given banking organization, we ought to be able to state whether it is more or less “complex.” And yet, such an approach hardly offers any guidance if one wants to understand the intricacies of global banks and to monitor and regulate them. What should be the appropriate metrics? It seems to us that there is not a consensus just yet on what complexity might mean in the context of banking. The global dimension of a bank adds many ...