#immorality

3 questions from Probabilistic & Graphical Models

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mediumAI-checkedProbabilistic & Graphical Models

Which of the three DAGs below encode the same set of independencies (are I-equivalent)?

Three DAGs over v, w, x, y, z with the same skeleton v-w-x-y-z. Graph 1: v to w, w to x, x to y, z to y. Graph 2: w to v, x to w, x to y, z to y. Graph 3: w to v, x to w, y to x, z to y.

All three graphs1
Graphs 1 and 2 only2
Graphs 2 and 3 only3
None of them, since the arrows between $v$ , $w$ and $x$ differ4

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