Table 2.

Comparison of synthetic data generated from IST data, evaluated by two utility metrics (lower values indicate better performance)

Metric	Methods
	Our method	NORTA-J	GAN	VAE	QVAE	QP-VAE
$\overline{\psi }$	$0.091\pm 0.03$	$0.085\pm 0.04$	$0.114\pm 0.01$	$0.106\pm 0.03$	$0.094\pm 0.03$	$0.041\pm 0.00$
${\psi }_{\mathit{ratio}}$	$2.449\pm 0.94$	$2.707\pm 1.15$	$3.084\pm 0.25$	$2.85\pm 0.92$	$2.525\pm 0.82$	$1.277\pm 0.11$