Hi Pantelis,

chung wrote:
> Hi Nina,
>  At http://www.opentox.org/data/documents/development/RDF%
> 20files/AlgorithmTypes/view?searchterm=Algorithm%20Types%20ontology (the
> ontology for all algorithm types we use in OT), all algorithm types,
> appear to be Resources, not Literals. However in
> http://www.opentox.org/data/documents/development/RDF%
> 20files/JavaOnly/JenaExamples , the object which answers the question:
>
> <http://myservice.com/algorithm/id>
> <http://www.opentox.org/api/1.1#isA> ?obj
>
> is a literal. The corresponding triple is:
>
> Subject: 
> http://opentox.ntua.gr:3000/algorithm/mlr
> Predicate:
> http://www.opentox.org/api/1.1#isA 
> Object:
> "http://www.opentox.org/algorithmTypes.owl#RegressionEagerSingleTarget"
>
> Is this correct? If yes, should we use literals in that case or
> resources?
>
>   
|Should be resources,  not literals (the Range of isA property is a
resource).  I'll update the example ASAP.
> The same holds for the supported statistics. The java code snippet
> produces an RDF which includes the triple:
>
> http://opentox.ntua.gr:3000/algorithm/mlr
> http://www.opentox.org/api/1.1#statisticsSupported
> "statistics-1"^^http://www.w3.org/2001/XMLSchema#string
>
> Shouldn't the object
> ("statistics-1"^^http://www.w3.org/2001/XMLSchema#string ) be a Resource
> instead of a string? Was it a Resource, one assign propertied on it -
> For example one could declare its type etc.
>   
In the current opentox.owl supported statistics are simply literals
(just to follow the old XML spec), but I agree it will be better if
"statisticsSupported" are indeed resources.
On another note, statisticsSupported are closely related to the
Validation service, which already has defined several statistics,
specific to classification and regression models.  I am not sure how/if
Validation service (or another client or service) uses the information
from "statisticsSupported" field, but it would be good if this
information is somehow exploited. 

Tobias, Martin, what do you think?

Best regards,
Nina
> These phenomena do not appear in the RDF representation of a dataset
> where most elements are Resources instead of Literals.
>
> On Tue, 2009-12-08 at 13:45 +0200, Nina Jeliazkova wrote:
>   
>> Hi Pantelis,
>>
>> In principle yes (the Class of the resource should be defined and this
>> is done via RDFType), but there is already in the example
>>
>> 	OT.OTClass.Dataset.createOntClass(jenaModel);
>>
>> which does the same , if jenaModel is OntModel.
>>     
>
> When I add this piece of code, the following triple is additionally
> included in the representation:
>
> * http://sth.com/dataset/1 
> * http://www.w3.org/1999/02/22-rdf-syntax-ns#type
> * http://www.opentox.org/api/1.1#Dataset
>
> which is absent if
> dataset.addRDFType(OT.OTClass.Dataset.createProperty(datasetModel)); is
> not included. Otherwise the only triple present is this:
>
> * http://www.opentox.org/api/1.1#Dataset
> * http://www.w3.org/1999/02/22-rdf-syntax-ns#type
> * http://www.w3.org/2002/07/owl#Class
>
> which simply implies that Dataset is of type Class (this doesn't provide
> information about the dataset itself, as an instance, but only for the
> resource http://www.opentox.org/api/1.1#Dataset . So this way, we have
> not defined that http://sth.com/dataset/1 is of type
> http://www.opentox.org/api/1.1#Dataset which in turn is a Class.
>
>
> Best Regards,
> Pantelis
>
>   
>> Regards,
>> Nina
>> chung wrote:
>>     
>>> Hi Nina, 
>>>  I think we have to include the following line in the code for the
>>> creation of an RDF representation for datasets:
>>>
>>> dataset.addRDFType(OT.OTClass.Dataset.createProperty(datasetModel));
>>>
>>> This declares that the Resource under consideration is a Dataset.
>>>
>>> P.S. Thanks for the snippets!
>>>
>>> Best regards,
>>> Pantelis
>>>   
>>>       
>>     
>
>
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