- From: John Goodwin <John.Goodwin@ordnancesurvey.co.uk>
- Date: Mon, 17 Nov 2008 17:06:20 -0000
- To: "Jens Lehmann" <lehmann@informatik.uni-leipzig.de>
- Cc: "Chris Bizer" <chris@bizer.de>, <public-lod@w3.org>, "Semantic Web" <semantic-web@w3.org>, <dbpedia-discussion@lists.sourceforge.net>
Hi Jens, > We specified the domains and ranges as disjunctions of classes (not > intersection). See the W3C specification of owl:unionOf [1]. The version I downloaded from http://wiki.dbpedia.org/Downloads32 had all the range restrictions as owl:intersectionOf. Or rather properties like "publisher" had lists of classes as the range, and OWL editors/reasoners will interpret that as intersection and not union. > The domain and range axioms help to structure DBpedia and clarify the > meaning of certain properties. While there is room for improvement, it > is not an option to remove all of them. I think some of them are are definitely worth keeping, especially where related to people and places, but I thought a few were a bit overspecified. Anyway keep up the good work...:) John . This email is only intended for the person to whom it is addressed and may contain confidential information. If you have received this email in error, please notify the sender and delete this email which must not be copied, distributed or disclosed to any other person. Unless stated otherwise, the contents of this email are personal to the writer and do not represent the official view of Ordnance Survey. Nor can any contract be formed on Ordnance Survey's behalf via email. We reserve the right to monitor emails and attachments without prior notice. Thank you for your cooperation. Ordnance Survey Romsey Road Southampton SO16 4GU Tel: 08456 050505 http://www.ordnancesurvey.co.uk
Received on Monday, 17 November 2008 17:11:54 UTC