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##'Toolkit for Bayesian estimation of the dependence structure
##' in Multivariate Extreme Value parametric models, with possible use of Bayesian model Averaging techniques
##' Includes a Generic MCMC sampler. Estimation of the marginal
##' distributions is a prerequisite, \emph{e.g.} using one of the
##' packages
##' \code{ismev}, \code{evd}, \code{evdbayes} or \code{POT}. This package handles data sets which are assumed
##' to be marginally unit-Frechet distributed.
##' @name BMAmevt-package
##' @aliases BMAmevt
##' @docType package
##' @title Bayesian Model Averaging for Multivariate Extremes
##' @author Anne Sabourin
##' @seealso \code{evdbayes}
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##' Five-dimensional air quality dataset recorded in Leeds(U.K.), during five winter seasons.
##'
##' Contains 590 daily maxima of five air pollutants
##' (respectively PM10, N0, NO2, 03, S02) recorded in Leeds (U.K.)
##' during five winter seasons (1994-1998, November-February included). Contains NA's.
##' @name winterdat
##' @docType data
##' @format A \eqn{590*5} matrix.
##' @source \url{https://uk-air.defra.gov.uk/}
##' @keywords datasets
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##' Multivariate data set with margins following unit Frechet
##' distribution.
##'
##' Five-variate dataset which margins follow unit-Frechet distributions,
##' obtained from \code{\link{winterdat}} by probability integral
##' transform.
##' Marginal estimation was performed by maximum likelihood estimation of a Generalized Pareto distribution over marginal thresholds corresponding to \eqn{0.7} quantiles, following
##' Cooley \emph{et.al.} (see reference below). The \dQuote{non extreme} part of the marginal distributions was approximated by the empirical distribution function.
##' @name frechetdat
##' @docType data
##' @format A \eqn{601*5} - matrix:
##' @references COOLEY, D., DAVIS, R. and NAVEAU, P. (2010). The pairwise beta distribution: A flexible parametric multivariate model for extremes. \emph{Journal of Multivariate Analysis 101, 2103-2117}.
##' @keywords datasets
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##' Tri-variate \sQuote{angular} data set approximately distributed according to a multivariate extremes angular distribution
##'
##' The data set is constructed from coordinates (columns) \eqn{1,2,3} of \code{\link{frechetdat}}.
##' It contains 100 angular points corresponding to the tri-variate vectors \eqn{V=(X,Y,Z)} with largest \eqn{L^1}{L1} norm (\eqn{||V||=X+Y+Z}). The angular points are obtained by \sQuote{normalizing}: \emph{e.g.},
##' \eqn{x=X/||V||}. Thus,
##' each row in \code{Leeds} is a point on the two-dimensional simplex : \eqn{x+y+z=1}.
##' @name Leeds
##' @docType data
##' @format A \eqn{100*3} - matrix.
##' @references COOLEY, D., DAVIS, R. and NAVEAU, P. (2010). The pairwise beta distribution: A flexible parametric multivariate model for extremes. \emph{Journal of Multivariate Analysis 101, 2103-2117}
##'
##' RESNICK, S. (1987). Extreme values, regular variation, and point processes, \emph{Applied Probability. A, vol. 4,
##' Series of the Applied Probability Trust. Springer-Verlag, New York}.
##' @keywords datasets
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##' Multivariate data set with margins following unit Frechet distribution.
##'
##' The data set contains 590 (transformed) daily maxima of five air pollutants recorded in Leeds (U.K.) during five winter seasons (1994-1998). Contains NA's. Marginal transformation to unit Frechet was performed by Cooley \emph{et.al.} (see reference below).##' \eqn{x=X/||V||}. Thus,
##' @name Leeds.frechet
##' @docType data
##' @format A \eqn{590*5} - matrix:
##' @references COOLEY, D., DAVIS, R. and NAVEAU, P. (2010). The pairwise beta distribution: A flexible parametric multivariate model for extremes. \emph{Journal of Multivariate Analysis 101, 2103-2117}
##' @keywords datasets
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##' Default hyper-parameters for the Pairwise Beta model.
##'
##' The log-transformed dependence parameters are a priori independent, Gausian. This list contains the means and standard deviation for the prior distributions.
##' @name pb.Hpar
##' @docType data
##' @format A list of four parameters: \describe{
##'
##' \item{ mean.alpha}{
##' Mean of the log-transformed global dependence parameter. Default to \eqn{0} )
##' }
##'
##' \item{sd.alpha}{Standard deviation of the log-transformed global dependence parameter. Default to \eqn{3}.
##' }
##'\item{mean.beta}{
##' Mean of each of the log-transformed pairwise dependence parameters.
##' Default to \eqn{0} )
##' }
##' \item{sd.beta}{Standard deviation of each of the log-transformed
##' pairwise dependence parameters. Default to \eqn{3}.
##' }
##' }
##' @keywords dataset
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##' Default MCMC tuning parameter for the Pairwise Beta model.
##'
##' The proposal for the log-transformed parameters are Gaussian, centered at the current value.
##' @name pb.MCpar
##' @docType data
##' @format A list made of a single element: \code{sd},
##' the standard deviation of the normal proposition kernel (on the log-transformed parameter). Default to
##' \eqn{0.35}.
##' @keywords dataset
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##' Default hyper-parameters for the NL model.
##'
##' The logit-transformed parameters for the NL model are \emph{a priori}
##' Gaussian. The list has the same format as \code{\link{pb.Hpar}}.
##' @name nl.Hpar
##' @docType data
##' @format A list of four parameters: \describe{
##' \item{mean.alpha, sd.alpha}{%
##' Mean and standard deviation of the normal prior distribution for the logit-transformed global dependence parameter \eqn{alpha} .
##' Default to \eqn{0, 3}.
##' }
##' \item{mean.beta, sd.beta}{Idem for the pairwise dependence parameters.
##' }
##' }
##' @keywords dataset
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##' Default MCMC tuning parameter for the Nested Asymmetric logistic model.
##'
##' The proposals (on the logit-scale) are Gaussian, centered aroud the current value.
##' @name nl.MCpar
##' @docType data
##' @format A list made of a single element: \code{sd}. The standard deviation of the normal proposition kernel centered at the (logit-transformed)
##' current state. Default to \eqn{0.35}.
##' @keywords dataset
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##' Example of valid Dirichlet mixture parameter for tri-variate extremes.
##'
##' The Dirichlet mixture density has three components, the center of mass of the three columns of \code{Mu}, with weights \code{wei} is \eqn{(1/3,1/3,1/3)}: the centroid of the two dimensional unit simplex.
##' @name dm.expar.D3k3
##' @docType data
##' @format A list made of \describe{
##' \item{Mu}{ A \eqn{3*3} matrix, which rows sum to one, such that the
##' center of mass of the three column vectors (weighted with \code{wei}) is the centroid of the simplex: each column is the center of a Dirichlet mixture component. }
##' \item{wei}{A vector of length three, summing to one: the mixture weights}
##' \item{lnu}{ A vector of length three: the logarithm of the concentration parameters. }
##' }
##' @keywords dataset
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##' @importFrom grDevices dev.new gray
##'
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