All functions

build_Ej()

Build E_j tensor structure

calculate_u_statistics_pure_r_six()

Compute U-statistics HOIF-type from Order 2 to 6 in pure R code.

compute_basis_matrix()

Compute basis projection matrices

compute_gram_inverse()

Compute inverse of weighted Gram matrix

compute_hoif_estimators()

Compute HOIF Estimators for ATE

compute_residuals()

Compute residuals for both treatment groups

hoif_ate()

Main function: HOIF estimators for ATE with optional sample splitting

plot(<hoif_ate>)

Plot convergence of ATE estimates

print(<hoif_ate>)

Print method for hoif_ate objects

transform_covariates()

HOIF Estimators for Average Treatment Effect