Smix                    Survival function of discrete extreme value
                        mixture distribution
Supp                    Survival function of discrete power law
cran_dependencies       Dependencies of CRAN packages
df_to_graph             Construct the giant component of the network
                        from two data frames
dmix                    Probability mass function (PMF) of discrete
                        extreme value mixture distribution
dupp                    Probability mass function (PMF) of discrete
                        power law
get_dep_all             Obtain one type of dependencies of a package
                        directly
get_dep_df              Obtain the data frame of multiple kinds of
                        dependencies
mcmc_mix                Markov chain Monte Carlo for discrete extreme
                        value mixture distribution
mcmc_upp                Markov chain Monte Carlo for discrete power law
topo_sort_kahn          Return a sorted vector of nodes id
