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Re: Huge .owl files

From: Chris Dollin <kers@hplb.hpl.hp.com>
Date: Thu, 26 Jan 2006 08:18:43 +0000
To: "Martin Hepp \(DERI\)" <martin.hepp@deri.org>, <l14103@alunos.uevora.pt>, <semanticweb@yahoogroups.com>, <semantic-web@w3.org>
Message-Id: <200601260818.43423.kers@hplb.hpl.hp.com>

On Wednesday 25 January 2006 20:17, Martin Hepp \(DERI\) wrote:
> Hi ClŠudio:
> You can use eClassOWL for that. eClassOWL is a real eBusiness ontology for
> products and services and contains more than 75,000 classes and 5,500
> properties; the total file size exceeds 25 MB. It will be available shortly
> at http://www.heppnetz.de/eclassowl (I can also e-mail it to you if you
> need it immediately). I am just in the process of finishing the user's
> guide before posting the final version.
> OWLIM is able to load it (with some tricks), also IBMs IODT can load it.
> Jena crashes - I did not yet investigate why; likely memory allocation.

Very likely, with a 25Mb source file and the default Java heap size.
Just wallop up the heapsize. 

[Recent versions of Jena 2 - ie J2.3 - have a faster parser and slightly
 better memory model footprint than earlier versions.]

Chris "understanding is a three-edged sword" Dollin
Received on Thursday, 26 January 2006 09:06:48 UTC

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