Incomplete_Loglikelihood_binomiale
                        Calculate the incomplete loglikelihood from
                        mixture of binomial
adcampaign              Advertising campaign dataset
extract_id              Extract levels as numeric from id column of the
                        dataset
extract_target          Extract target value of GLM
extract_variables       Extract variables from GLM model
init_design_matrices    Initialize design matrices from dataframe to
                        cluster
init_lambda             Initialize the vector lambda of mixture
                        proportion
init_subset             Initialize the estimation of beta
init_tau                Initialize the matrix probability of each
                        levels id to be in the clusters
log_density_binom       Calculate de log density of a binomial
my_BIC                  Calculate the Bayesian Information Criterion
                        (BIC)
my_ICL                  Calculate the Integrated Complete Likelihood
                        (ICL)
runEM                   Run an EM algorithm to obtain a mixture of
                        binomial with K clusters
update_beta             M-step : update of beta parameters
update_tau              E-step : update of tau
update_w                M-step : Update the diagonal matrix W from beta
                        iterative equation
update_z                M-step : Update the matrix of working variables
                        Z from beta iterative equation
