Kucherenko et al. (2011) classify it as a Type C function, meaning that it has dominant high-order interaction terms and a high effective dimension. Bratley, P., & Fox, B. L. (1988). Algorithm 659: ...

The exact value of the integral with this function as an integrand is 1 (Gerstner & Griebel, 1998). The variance and variation are easily obtained, because the function is formed from the products of ...