Computes expected shortfall for a given ditribution
esg(spec, alpha, ...)
a character string specifying the distribution (for example, "norm" corresponds to the standard normal)
the probabilities associated with expected shortfall
other parameters
An object of the same length as alpha
, giving expected shortfall computed.
S. Chan and S. Nadarajah, Risk: An R package for risk measures, submitted
P. Artzner, F. Delbaen, J. M. Eber and D. Heath, Coherent measures of risk, Mathematical Finance, 9, 1999, 203-228 <DOI:10.1111/1467-9965.00068>