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Table 1 Causal Interactions and their Corresponding Elicitation Questions in the DeMorgan Model

From: Bayesian network model to distinguish between intentional attacks and accidental technical failures: a case study of floodgates

Type of Causal Interaction

Elicitation Question

Leak

“What is the probability that the child is in their non-distinguished state given that the parents are in their distinguished states?”

Cause, Barrier

Note: There is a difference between the non-distinguished state of a cause and barrier.

“What is the probability that the child is in their non-distinguished state given that all the parents are in their distinguished states, except Xi and no other unmodelled causal factors are present?”.

Inhibitor, Requirement

Note: There is a difference between the non-distinguished state of an inhibitor and requirement.

“What is the probability that the child is in their distinguished state given that the parents are in their distinguished states, except Ui and no other unmodelled causal factors are present?”.