Title
Repetitive causal discovery of linear non-Gaussian acyclic models in the presence of latent confounders
Abstract
Causal discovery from data affected by latent confounders is an important and difficult challenge. Causal functional model-based approaches have not been used to present variables whose relationships are affected by latent confounders, while some constraint-based methods can present them. This paper proposes a causal functional model-based method called repetitive causal discovery (RCD) to discover the causal structure of observed variables affected by latent confounders. RCD repeats inferring the causal directions between a small number of observed variables and determines whether the relationships are affected by latent confounders. RCD finally produces a causal graph where a bidirected arrow indicates the pair of variables that have the same latent confounders and a directed arrow indicates the causal direction of a pair of variables that are not affected by the same latent confounder. The results of experimental validation using simulated data and real-world data confirmed that RCD is effective in identifying latent confounders and causal directions between observed variables.
Year
DOI
Venue
2022
10.1007/s41060-021-00282-0
International Journal of Data Science and Analytics
Keywords
DocType
Volume
Causal discovery, Causal structures, Latent confounders
Journal
13
Issue
ISSN
Citations 
2
2364-415X
0
PageRank 
References 
Authors
0.34
2
2
Name
Order
Citations
PageRank
Takashi Nicholas Maeda100.34
Shohei Shimizu249245.80