Search Results for author: Laiwan Chan

Found 7 papers, 1 papers with code

Domain Generalization via Multidomain Discriminant Analysis

no code implementations25 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.

Domain Generalization Learning Theory

A Kernel Embedding-based Approach for Nonstationary Causal Model Inference

no code implementations23 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.

Causal Discovery

Causal Inference and Mechanism Clustering of A Mixture of Additive Noise Models

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.

Causal Inference Clustering

Causal Inference on Discrete Data via Estimating Distance Correlations

no code implementations21 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.

Causal Inference

Confounder Detection in High Dimensional Linear Models using First Moments of Spectral Measures

no code implementations19 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.

regression

Bridging Information Criteria and Parameter Shrinkage for Model Selection

no code implementations8 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.

Model Selection

Causal discovery with scale-mixture model for spatiotemporal variance dependencies

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.

Causal Discovery

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