Expectiles behave as expected

Expectiles' results are analogous to those of value-at-risk and expected shortfall


A recent criticism of the expected shortfall risk measure is that it is not elicitable (Gneiting 2011). This means that one cannot, in a backtesting procedure, make point forecasts of it and check whether the forecasting procedureworks (see Cont, Deguest and Scandolo (2010) for a fuller discussion of this concept). The discussion of this is still at an early stage, and the author is not convinced that it is an insuperable problem. However, Ziegel (2013) has recently pointed out that expectiles,

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