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SAT-Based Causal Discovery under Weaker Assumptions
Proceedings of the 33rd Conference on Uncertainty in Artificial Intelligence, PMLR R15:671-680, 2017.
Abstract
Using the flexibility of recently developed methods for causal discovery based on Boolean satisfiability (SAT) solvers, we en- code a variety of assumptions that weaken the Faithfulness assumption. The encoding results in a number of SAT-based algorithms whose asymptotic correctness relies on weaker condi- tions than are standardly assumed. This imple- mentation of a whole set of assumptions in the same platform enables us to systematically ex- plore the effect of weakening the Faithfulness assumption on causal discovery. An important effect, suggested by simulation results, is that adopting weaker assumptions greatly allevi- ates the problem of conflicting constraints and substantially shortens solving time. As a re- sult, SAT-based causal discovery is potentially more scalable under weaker assumptions.