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DEDUCTIVE MODELS
OF ABDUCTION
Some of the explanations entail their
con
clusion only in a
defeasible
way
(there are many potential
explanations)
-
Nonmonotonicity
-
Generalizations
Explanations are relatively
implausible
Suitable technical tools
able to capture the notion of
An
explanation
for
b
relative to background
theory T will be any
a
that,
together with T, entails
b
(normally with the
additional condition that
{
a
}
È
T
be
consistent
)
The abductive conclusion
a
has to
cover
the situation
b
T
È
{
a
}
`
b
The abductive conclusion
a
does not
have to introduce
inconsistencies
in
the background theory
T
È
b
0
Øa
preference among explanations
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