BiDD identifies causal direction by comparing dependence of predicted diffusion noise on the conditioning variable; consistency is proven only for mediator-free ANM, while hidden-mediation performance remains a conjecture.
Fom: Fourth-order moment based causal direction identification on the heteroscedastic data
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When Additive Noise Meets Unobserved Mediators: Bivariate Denoising Diffusion for Causal Discovery
BiDD identifies causal direction by comparing dependence of predicted diffusion noise on the conditioning variable; consistency is proven only for mediator-free ANM, while hidden-mediation performance remains a conjecture.