est.sh                  The main algorithm for estimating the Shapley
                        value
est.shcoa               Estimating the Shapley value based on component
                        orthogonal array (COA) with a prime power d
est.shcoa.prime         Estimating the Shapley value based on component
                        orthogonal array (COA) with a prime d
est.shls                Estimating the Shapley value based on Latin
                        square (LS)
est.shsrs               Estimating the Shapley value based on simple
                        random sampling (SRS)
est.shstrrs             Estimating the Shapley value based on
                        structured simple random sampling (StrRS)
gfpoly.add              Polynomial additive defined on GF(s) with a
                        prime s
gfpoly.div              Polynomial division defined on GF(s) with a
                        prime s
gfpoly.multi            Polynomial mutiplication defined on GF(s) with
                        a prime s
is.prime                Determine whether an integer is a prime
onecoa                  Generate a component orthogonal array (COA)
                        with a prime power d
onecoa.prime            Generate a component orthogonal array (COA)
                        with a prime d
onels                   Generate an Latin square (LS)
poly.div                Polynomial division
structed.perm           Generate the structured samples of simple
                        random samples
