W3C home > Mailing lists > Public > semantic-web@w3.org > July 2011

Re: Reasoning

From: Ignazio Palmisano <ipalmisano.mailings@gmail.com>
Date: Mon, 18 Jul 2011 10:44:28 +0100
Message-ID: <CAD2jOMMCHxv5O8o58bUJAxQuBY7-gkp7T+BH8cAHZ77Q9SDvsg@mail.gmail.com>
To: semantic-web@w3.org
2011/7/18 Markus Krötzsch <markus.kroetzsch@cs.ox.ac.uk>:
> On 18/07/11 08:27, Cristiano Longo wrote:
>>
>> Morning all,
>> in the far future I planned to implement a description logic reasoner.
>> May you give me some hints or pointers about the pratical (I yet know
>> the algorithm) for implementing such a reasoner?
>
> Dear Christian,
>
> description logics come in various flavours to match different application
> areas. These different logics also match different profiles of OWL: OWL EL,
> OWL QL, OWL RL, and OWL DL (there is also OWL Full but its semantics is not
> description logics based though both are compatible to some extent).
>
> EL, QL, RL are more lightweight for better scalability (for example OWL RL
> has been implemented in distributed settings with billions of assertions;
> and EL has been used to classify ontologies with hundreds of thousands of
> classes in a few seconds; QL is meant for ontology-based data access to
> large databases). OWL DL provides the full modelling support of all DL
> features that OWL has. Lightweight languages are generally easier to
> implement but any efficient implementation will need a lot of engineering..
> Just implementing an algorithm from a research paper will not lead to good
> results.
>
> So before you can start, you really need to decide which description
> logic/OWL profile you want to support. This is closely related to another
> important questions: why do you want to implement your own tool instead of
> just using an existing one?


Or contributing effort to / extending an existing reasoner; there is a
number of open source ones available.
HTH,
I.

>
> Regards
>
> Markus
>
> --
> Dr. Markus Krötzsch
> Department of Computer Science, University of Oxford
> Room 306, Parks Road, OX1 3QD Oxford, United Kingdom
> +44 (0)1865 283529               http://korrekt.org/
>
>
Received on Wednesday, 20 July 2011 06:35:29 UTC

This archive was generated by hypermail 2.3.1 : Tuesday, 1 March 2016 07:42:29 UTC