influence diagram


influence diagram

[′in‚flü·əns ‚dī·ə‚gram] (systems engineering) A graph-theoretic representation of a decision, which may include four types of nodes (decision, chance, value, and deterministic), directed arcs between the nodes (which identify dependencies between them), a marginal or conditional probability distribution defined at each chance node, and a mathematical function associated with each of the other types of node.