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Re: Implementing OWL2-RL with a RETE rule engine.

From: Jakub Kotowski <jakubkotowski@gmx.net>
Date: Mon, 19 Apr 2010 21:29:43 +0200
Message-ID: <4BCCAF27.7010403@gmx.net>
To: Olivier Rossel <olivier.rossel@gmail.com>
CC: Semantic Web <semantic-web@w3.org>, public-cwm-talk@w3.org
Dear Olivier,

Olivier Rossel wrote:
> do you think that cwm's architecture is suitable as a rule engine for OWL2RL?

I'm not an expert on cwm (or OWL for that matter) but I think that most
OWL 2 RL rules are expressible in N3 rules. You would have to come up
with a way to translate the rules with "false" in the head and I am not
sure how the LIST[] expression would be translated to N3 (see for
example rule eq-diff2).

Anyway, by directly translating the OWL 2 RL rules into N3 you maybe
would be able to do OWL 2 RL reasoning using cwm but it probably
wouldn't be very efficient or scalable (e.g. materializing all
owl:sameAs triples probably isn't the best thing to do).

What is your use case?

I'm CCing the cwm mailing list perhaps someone will know more.

Jakub


> 
> 
> On Mon, Apr 19, 2010 at 4:25 PM, Jakub Kotowski <jakubkotowski@gmx.net> wrote:
>> Dear Olivier,
>>
>> Olivier Rossel schrieb:
>>> Is there a reference list of all the rules to be implemented by a
>> rules engine
>>> to be fully compliant with RL?
>> The rules are given already in the spec:
>> http://www.w3.org/TR/owl2-profiles/#Reasoning_in_OWL_2_RL_and_RDF_Graphs_using_Rules
>>
>>> Or, even better, a reference implementation of OWL2-RL for an existing
>>> rules engine?
>> I don't know about any _reference_ implementation but there are some
>> initial implementations - I know Ivan Herman made one and there are
>> other (such as the SAOR reasoner [2]) that are close to OWL 2 RL which
>> partly implement the pD* [1] semantics.
>>
>> Regards,
>> Jakub
>>
>>
>> [1] http://linkinghub.elsevier.com/retrieve/pii/S1570826805000144
>> [2]
>> http://axel.deri.ie/presentations/20081029saor_ISWC_btriples_challenge.pdf
>>
> 
Received on Monday, 19 April 2010 19:30:23 GMT

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