Class DeductiveClosure
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Entry point to generate the deductive closure of a graph. The exact
choice deductive closure is controlled by a class reference. The
important initialization parameter is the closure_class: a
Class object referring to a subclass of Closure.Core.
Although this package includes a number of such subclasses (OWLRL_Semantics, RDFS_Semantics, RDFS_OWLRL_Semantics, and OWLRL_Extension), the user can use his/her own if
additional rules are implemented.
Note that owl:imports statements are not interpreted in this
class, that has to be done beforehand on the graph that is to be
expanded.
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closure_class,
improved_datatypes=True,
rdfs_closure=False,
axiomatic_triples=False,
datatype_axioms=False) |
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expand(self,
graph)
Expand the graph using forward chaining, and with the relevant
closure type. |
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use_improved_datatypes_conversions()
Switch the system to use the improved datatype conversion routines. |
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use_rdflib_datatypes_conversions()
Switch the system to use the generic (RDFLib) datatype conversion
routines |
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boolean
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improved_datatype_generic = False
Whether the improved set of lexical-to-Python conversions should be
used for datatype handling in general, ie, not only for a
particular instance and not only for inference purposes.
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boolean
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axiomatic_triples
Whether relevant axiomatic triples are added before chaining, except
for datatype axiomatic triples.
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Closure.Core
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closure_class
the class instance used to expand the graph
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boolean
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datatype_axioms
Whether further datatype axiomatic triples are added to the output.
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boolean
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rdfs_closure
Whether the RDFS closure should also be executed.
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__init__(self,
closure_class,
improved_datatypes=True,
rdfs_closure=False,
axiomatic_triples=False,
datatype_axioms=False)
(Constructor)
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- Parameters:
closure_class (subclass of Closure.Core) - a closure class reference.rdfs_closure (boolean) - whether RDFS rules are executed or notaxiomatic_triples (boolean) - Whether relevant axiomatic triples are added before chaining,
except for datatype axiomatic triples. Default: False.datatype_axioms (boolean) - Whether further datatype axiomatic triples are added to the
output. Default: false.improved_datatypes (boolean) - Whether the improved set of lexical-to-Python conversions should
be used for datatype handling. See the introduction for more
details. Default: True.
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Expand the graph using forward chaining, and with the relevant closure
type.
- Parameters:
graph (rdflib.Graph) - the RDF graph
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improved_datatype_generic
Whether the improved set of lexical-to-Python conversions should be used
for datatype handling in general, ie, not only for a particular
instance and not only for inference purposes. Default: False.
- Type:
- boolean
- Value:
-
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axiomatic_triples
Whether relevant axiomatic triples are added before chaining, except for
datatype axiomatic triples. Default: False.
- Type:
- boolean
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datatype_axioms
Whether further datatype axiomatic triples are added to the output.
Default: false.
- Type:
- boolean
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rdfs_closure
Whether the RDFS closure should also be executed. Default: False.
- Type:
- boolean
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