DAGs

Bird

fly: yes

Ostrich

fly: no

Pet-bird

Fifi

fly:?

Quaker

pacifist: true

Republican

pacifist: false

Maggie

pacifist: ?

Birds: want specific knowledge to dominate general.

Pacifists: want to report ambiguity rather than reach arbitrary conclusion.

Can we modify algorithm using path length to solve the problem?

isa

isa

isa

isa

instance

instance

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