no code implementations • 25 Jul 2019 • Shoubo Hu, Kun Zhang, Zhitang Chen, Laiwan Chan
Domain generalization (DG) aims to incorporate knowledge from multiple source domains into a single model that could generalize well on unseen target domains.
no code implementations • 23 Sep 2018 • Shoubo Hu, Zhitang Chen, Laiwan Chan
Although nonstationary data are more common in the real world, most existing causal discovery methods do not take nonstationarity into consideration.
1 code implementation • NeurIPS 2018 • Shoubo Hu, Zhitang Chen, Vahid Partovi Nia, Laiwan Chan, Yanhui Geng
The inference of the causal relationship between a pair of observed variables is a fundamental problem in science, and most existing approaches are based on one single causal model.
no code implementations • 21 Mar 2018 • Furui Liu, Laiwan Chan
In this paper, we deal with the problem of inferring causal directions when the data is on discrete domain.
no code implementations • 19 Mar 2018 • Furui Liu, Laiwan Chan
Based on an assumption of rotation invariant generating process of the model, recent study shows that the spectral measure induced by the regression coefficient vector with respect to the covariance matrix of $X_n$ is close to a uniform measure in purely causal cases, but it differs from a uniform measure characteristically in the presence of a scalar confounder.
no code implementations • 8 Jul 2013 • Kun Zhang, Heng Peng, Laiwan Chan, Aapo Hyvarinen
Model selection based on classical information criteria, such as BIC, is generally computationally demanding, but its properties are well studied.
no code implementations • NeurIPS 2012 • Zhitang Chen, Kun Zhang, Laiwan Chan
In conventional causal discovery, structural equation models (SEM) are directly applied to the observed variables, meaning that the causal effect can be represented as a function of the direct causes themselves.