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About: M-separation     Goto   Sponge   NotDistinct   Permalink

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Type: softwareyago:Assistant109815790yago:CausalAgent100007347yago:LivingThing100004258yago:Model110324560yago:Object100002684yago:Organism100004475yago:Person100007846yago:PhysicalEntity100001930yago:WikicatGraphicalModelsyago:Worker109632518yago:YagoLegalActoryago:YagoLegalActorGeoyago:Whole100003553 New Facet based on Instances of this Class

In statistics, m-separation is a measure of disconnectedness in ancestral graphs and a generalization of d-separation for directed acyclic graphs. It is the opposite of m-connectedness. Suppose G is an ancestral graph. For given source and target nodes s and t and a set Z of nodes in G\{s, t}, m-connectedness can be defined as follows. Consider a path from s to t. An intermediate node on the path is called a collider if both edges on the path touching it are directed toward the node. The path is said to m-connect the nodes s and t, given Z, if and only if: