parser <- add_argument(parser, "--z_bias", help='how is the classifier biased?', default=1.5)
parser <- add_argument(parser, "--Bxy", help='coefficient of x on y', default=0.1)
parser <- add_argument(parser, "--Bzy", help='coeffficient of z on y', default=-0.1)
parser <- add_argument(parser, "--z_bias", help='how is the classifier biased?', default=1.5)
parser <- add_argument(parser, "--Bxy", help='coefficient of x on y', default=0.1)
parser <- add_argument(parser, "--Bzy", help='coeffficient of z on y', default=-0.1)