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Regression
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Regression in “Blocks World“ – applying the regression algorithm
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Step 1:
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Goal state s
n
= G = on(B, Table) ^ on(C, B) ^ on(A, C) ^ clear(A) ^ handEmpty
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Step 2:
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Applicable actions: stack(A,C)
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Step 3:
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regress(G, stack(A,C)) =
G \
add(stack
)
∪
pre(stack
)
=
on(B, Table) ^ on(C, B) ^ on(A, C) ^ clear(A) ^ handEmpty
\
on(A,C) ^ handEmpty ^ clear(A)
∪
hoding(A) ^ clear(C) = on(B, Table) ^ on(C, B) ^ holding(A) ^ clear(C)
Speaker notes:
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