opw	opw
prob_rank_givenEffect	prob_rank_givenEffect
prob_rank_givenEffect_approx	prob_rank_givenEffect_approx
prob_rank_givenEffect_exact	prob_rank_givenEffect_exact
prob_rank_givenEffect_simu	prob_rank_givenEffect_simu
weight_binary	weight_binary
weight_by_delta	weight_by_delta
weight_continuous	weight_continuous
