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[protege-discussion] Incremental Instance Loading

Samson Tu swt at
Mon Mar 24 13:42:18 PDT 2008

It seems that you can benefit from using Protege's database backend.

With the database backend, classes and instances are loaded on demand.


O'Neill, Dennis wrote:
> I am building a Protégé taxonomy using a variety of external sources. 
> These sources are updated periodically. It would be useful to do an 
> incremental loading of instance updates rather than have to do a 
> complete load of the universe from scratch (70,000 instances) every time 
> I get an update. Is there a way to do this?
> I currently keep static taxonomy.pprj and taxonomy.pont files and 
> programmatically generate the taxonomy.pins file from scratch whenever I 
> get an external update. It would be nicer to incrementally load a 
> separate update.pins file (50-60 instances) into the corpus and then 
> store out the new taxonomy.pins once I have a chance to check it out.
> Dennis M. O'Neill
> Room 2069B
> doneill at
> (281) 236-5690
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Samson Tu                                   email: swt at
Senior Research Scientist                   web:
Center for Biomedical Informatics Research  phone: 1-650-725-3391
Stanford University                         fax: 1-650-725-7944

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