August 2009
Intermediate to advanced
456 pages
14h 8m
English
Content preview from Foundations of Semantic Web Technologies
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78 Foundations of Semantic Web Technologies
s p o .
IP
IR
.I .I .I
triple
p
I
s
I
o
I
I
EXT
(p
I
)
I
EXT
FIGURE 3.4: Criterion for the validity of a triple with respect to an
interpretation
is to let a graph that contains blank nodes be valid, if everyone of these blank
nodes can be replaced by a resource, such that the res ulting bnode-free graph
is valid. Hence, let A be a function assigning a resource from IR to every blank
node occurring in G. Moreover, we define for such a mapping A and a given
interpretation I a sort of combined interpretation I+A that behaves exactly
like I on the URIs and literals but additionally uses A to assign resources to
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