ASP-based Discovery of Semi-Markovian Causal Models under Weaker Assumptions

ASP-based Discovery of Semi-Markovian Causal Models under Weaker Assumptions

Zhalama, Jiji Zhang, Frederick Eberhardt, Wolfgang Mayer, Mark Junjie Li

Proceedings of the Twenty-Eighth International Joint Conference on Artificial Intelligence
Main track. Pages 1488-1494. https://doi.org/10.24963/ijcai.2019/206

In recent years the possibility of relaxing the so-called Faithfulness assumption in automated causal discovery has been investigated. The investigation showed (1) that the Faithfulness assumption can be weakened in various ways that in an important sense preserve its power, and (2) that weakening of Faithfulness may help to speed up methods based on Answer Set Programming. However, this line of work has so far only considered the discovery of causal models without latent variables. In this paper, we study weakenings of Faithfulness for constraint-based discovery of semi-Markovian causal models, which accommodate the possibility of latent variables, and show that both (1) and (2) remain the case in this more realistic setting.
Keywords:
Knowledge Representation and Reasoning: Action, Change and Causality
Machine Learning: Learning Graphical Models
Uncertainty in AI: Graphical Models
Constraints and SAT: SAT: Applications