6 ms·
Naming it Cause and Effect is misleading; it makes it seem like bayes rule only applies when there is a causal relation somewhere. It also make the symmetry of
by jhdevos 13y ago
Naming it Cause and Effect is misleading; it makes it seem like bayes rule only applies when there is a causal relation somewhere. It also make the symmetry of the first line seem off. I would write the first line as
P(A and B are both true)
= P (A is true) x P (B is also true, given that we know A is already true)
= P (B is true) x P (A is also true, given that we know B is already true)
- wfunction 13y agoI was actually going to write A and B at first, but then realized that wouldn't show the relationship of the formula to the disease example very obviously. I thought it'd be better to make it easier to understand (and more practical) by showing how it helps you infer causes from effects.