market view of exchange rate determination is not rejected for any currency or time span.The forecasting performance of the …

In inventory management, hierarchical forecasting (HF) is a hot issue : families of items are formed for which total … instead of forecasting.So, from a random sample we estimate both total demand and the fraction of this total that individual … aggregation of items, followed by fractioning, lead to more accurate estimates of individual demand?Thirdly, a more practical …

also the impact of aggregation of the basic data. We introduce the concept of `tentative' estimates that are close to …

problem of spurious Granger causality relationships that can arise from temporal aggregation.We outline the distortional e …, we demonstrate the importance of incorporating exact temporal aggregation restrictions on the discrete time data.We do … this by conducting causality tests in discrete time models that: (a) impose the temporal aggregation restrictions exactly …

Industry productivity is obtained by aggregation of firm productivities and inclusion of the appropriate allocative …

measured by the proximity between a firm and the best practices.Aggregation of firm efficiencies is imperfect.The bias is used …