Oh I guess I made a copy and paste mistake. Change the line to sh:object
p3point_validation:Melanoma because that's the rdf:type you want to infer?
Holger
On 30/06/2020 13:53, Emily Zhang wrote:
Thank for the quick reply, Holger! It make sense that I should define
the rule under Patient class. However, how can I link the rule to
"Melanoma" since its the the instance of patient should be inferred
as? Should I define the "melanoma" as the sh:node under sh:filtershape?
Thanks again,
Emily
在 2020年6月29日星期一 UTC-5下午10:30:58，Holger Knublauch写道：
Hi Emily,
the definition below doesn't look correct: you can only use
sh:values rules in a property shape, not in a class or node shape.
Also, any such rule would need to be attached to the class Patient
because you want to apply it to all instances of that class to
infer an additional triple. It may work better if you have
something like
:Patient
sh:rule [
a sh:TripleRule ;
sh:subject sh:this;
sh:predicate rdf:type ;
sh:object p3point_validation:Patient ;
sh:condition [
# your sh:filterShape, i.e. start with sh:property
sh:property [
sh:path p3point_validation:point_dermfeatures ;
sh:in (
p3point_validation:Atypical
p3point_validation:Asymmetry
p3point_validation:Blue_white_structure
) ;
sh:maxCount 3 ; # Are those constraints really needed?
sh:minCount 2 ;
] ;
]
]
HTH
Holger
On 30/06/2020 13:14, Emily Zhang wrote:
Thanks so much for the detailed reply! I actually found out that
sh:in might be a better choice for me.
To give a summary of my question:
It's a inference question that all the instances of "Patient" who
has the property of "3point_dermfeatures" that satisfy the
constrain: (a): their features are within the range of "Atypical,
Asymmetry, blue_white_structure"; (b): the number of all the
features are in the range [2,3]; should be inferred to as having
the disease of "Melanoma".
However, when I tried to "Run Inferences" for the instance of
"Patient", nothing returned. Do you think it has something to do
with my source code?
Here is the source code I've edited according to to tutorial.
p3point_validation:Melanoma
rdf:type owl:Class ;
rdf:type sh:NodeShape ;
rdfs:subClassOf owl:Thing ;
sh:values [
sh:filterShape [
sh:property [
sh:path p3point_validation:point_dermfeatures ;
sh:in (
p3point_validation:Atypical
p3point_validation:Asymmetry
p3point_validation:Blue_white_structure
) ;
sh:maxCount 3 ;
sh:minCount 2 ;
] ;
] ;
sh:nodes [
sh:path p3point_validation:Patient ;
] ;
] ;
.
在 2020年6月29日星期一 UTC-5下午7:04:49，Irene Polikoff写道：
Hi Emily,
I am not sure I understand the question. OWL is OWL and SHACL
is SHACL. They are different languages with different
semantics. OWL is based on the Open World Assumption and
SHACL is not.
You can combine OWL axioms and SHACL constraints and rules in
the same RDF graph if this is what you mean by “using together”.
There are similarities between SHACL and OWL and you can find
constraint components in SHACL that are similar to certain
OWL restrictions. If your question is “what in SHACL would be
similar to the OWL allValueFrom and someValuesFrom
restrictions", then:
For allValuesFrom, if values are resources, use sh:class -
this means that all values must be members of the specified
class. If values are literals, use sh:datatype.
OWL someValuesFrom is simply a short hand for a qualified
cardinality restriction with min = 1. In other words, at
least one value must satisfy the restriction, others could be
different. In SHACL, you could use qualified value shapes for
something similar to the qualified cardinality restrictions.
See
https://www.w3.org/TR/shacl/#QualifiedValueShapeConstraintComponent
<https://www.w3.org/TR/shacl/#QualifiedValueShapeConstraintComponent>.
There is no short hand for someValuesFrom in the spec, we we
have defined dash:hasValueWithClass in the dash
(http://datashapes.org/dash) namespace. You can find it at
http://datashapes.org/dash.ttl
<http://datashapes.org/dash.ttl> and some documentation at
http://datashapes.org/dash.
You can also take a look at the mapping from OWL to SHACL
that is used by TopBraid to auto-generate SHACL from
RDFS/OWL. It is described in
https://www.topquadrant.com/from-owl-to-shacl-in-an-automated-way/
<https://www.topquadrant.com/from-owl-to-shacl-in-an-automated-way/>.
For the most up to date version of the rules, see the file in
the workspace.
Regards,
Irene
On Jun 29, 2020, at 6:47 PM, Emily Zhang
<zxy10...@gmail.com> wrote:
Hi Irene,
Just wondering if I can use SHACL and the OWL function
"allvaluesfrom" or "somevaluesfrom" together? I do see there
is "hasvalue" function embedded in the SHACL file, however,
I didn't find the other two functions.
Thanks,
Emily
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