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Package 'extRemes' - What are R and CRAN?

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12 ci.fevd<br />

Value<br />

likelihood, <strong>and</strong> smaller values curiously tend to be better, but not too small! Smaller values <strong>are</strong> also<br />

more efficient). Further, one should really look at the plot of the profile-likelihood to make sure that<br />

this is the case, <strong>and</strong> that resulting CIs <strong>are</strong> accurately estimated (perhaps using the locator function<br />

to be sure). Nevertheless, an attempt is made to find the limits automatically. To look at the plot<br />

along with the horizontal line, m - q, <strong>and</strong> vertical lines through the MLE (thin black dashed) <strong>and</strong> the<br />

CIs (thick dashed blue), use the verbose = TRUE argument in the call to ci. This is not an explicit<br />

argument, but available nonetheless (see examples below).<br />

See any text on EVA/EVT for more details (e.g., Coles 2001; Beirlant et al 2004; de Haan <strong>and</strong><br />

Ferreira 2006).<br />

Either a numeric vector of length 3 (if only one parameter/return level is used) or a matrix. In either<br />

case, they will have class “ci”.<br />

Author(s)<br />

Eric Gillel<strong>and</strong><br />

References<br />

Beirlant, J., Goegebeur, Y., Teugels, J. <strong>and</strong> Segers, J. (2004). Statistics of Extremes: Theory <strong>and</strong><br />

Applications. Chichester, West Sussex, Engl<strong>and</strong>, UK: Wiley, ISBN 9780471976479, 522pp.<br />

Coles, S. (2001). An introduction to statistical modeling of extreme values, London: Springer-<br />

Verlag.<br />

de Haan, L. <strong>and</strong> Ferreira, A. (2006). Extreme Value Theory: An Introduction. New York, NY, USA:<br />

Springer, 288pp.<br />

See Also<br />

fevd, ci.rl.ns.fevd.bayesian, ci<br />

Examples<br />

data(Fort)<br />

fit

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