Exercise 26.1 - Causal reasoning in the sprinkler network

Answers

For question (a) and (b), a perfect intervention cuts out links to W , so the probability that the sprinkler is on is:

0.5 × 0.9 + 0.5 × 0.1 = 0.5 ,

so is that in case the sprinkler is off.

For question (c), the probability is 0.1, since interfering with the root node of a PGM affectes neither the graphical structure, nor the information propagation within.

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2021-03-24 13:42
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