# NegBin_GL = function(trueParam, p, q, LB, UB, MaxCdf, nHC, n, nsim, no_cores){
#
# #---------------------------------------------------------------------------------------------#
# # PURPOSE: Fit Gaussian likelihood to many realizations of synthetic Poisson data with
# # an underlying ARMA series.
# #
# # INPUTS
# # initParam initial parameters
# # trueParam true parameters
# # p,q orders of underlying ARMA model
# # LB lower bound for parameters
# # UB upper bound for parameters
# # MaxCdf cdf will be computed up to this number (for light tails cdf=1 fast)
# # n sample size
# # nsim number of realizations to be fitted
# # no_cores number of cores to be used
# # nHC number of HC to be computed
# #
# # OUTPUT
# # df parameter estimates, true values, standard errors and likelihood value
# #
# # NOTES no standard errors in cases where maximum is achieved at the boundary
# #
# # AUTHORS: James Livsey, Stefanos Kechagias, Vladas Pipiras
# #
# # DATE: April 2020
# #
# # R version 3.6.3
# #---------------------------------------------------------------------------------------------#
#
# # ---- Load libraries ----
# library(parallel)
# library(doParallel)
# library(countsFun)
#
#
# # list with true ARMA parameters
# ARMAmodel = list(NULL,NULL)
# if(p>0){ARMAmodel[[1]] = trueParam[3:(2+p)]}
# if(q>0){ARMAmodel[[2]] = trueParam[(3+p):length(trueParam)]}
#
# # Generate all the data and save it in a list
# l <- list()
# initParam <- list()
# for(r in 1:nsim){
# set.seed(r)
# l[[r]] = sim_negbin(n, ARMAmodel, MargParm[1], MargParm[2] )
# initParam[[r]] = ComputeInitNegBinMA(l[[r]],n,nHC)
# }
#
#
# # initiate and register the cluster
# cl <- makeCluster(no_cores)
# registerDoParallel(cl)
#
# # fit the gaussian log likelihood using foreach
# all = foreach(index = 1:nsim,
# .combine = rbind,
# .packages = c("countsFun")) %dopar%
# FitGaussianLikNB(initParam[[index]], l[[index]], LB, UB, c(p,q), MaxCdf, nHC)
#
#
# stopCluster(cl)
#
# # Prepare results for the plot.
# df = data.frame(matrix(ncol = 11, nrow = nsim))
#
#
# names(df) = c('r.est',
# 'p.est',
# 'theta.est',
# 'estim.method',
# 'n',
# 'theta.true',
# 'theta.se',
# 'r.true',
# 'r.se',
# 'p.true',
# 'p.se' )
#
# # fix me generalize this
# df[,1:3] = all[,1:3]
# df[,4] = 'gaussianLik'
# df[,5] = n
# df[,6] = trueParam[3]
# df[,7] = all[,6]
# df[,8] = MargParm[1]
# df[,9] = all[,4]
# df[,10] = MargParm[2]
# df[,11] = all[,5]
#
#
#
# return(df)
# }
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