The Whiteboard - Semantic Arts

How do I track down and debug errors in my ontology?

by Dave McComb | Oct 31, 2012 | The Whiteboard

I will answer this in the context of OWL ontologies where the errors are found using Hermit or Fact++ as the inference engine. I happen to use Protégé, but other ontology tools have similar functionality. There are a few cases. First, if the ontology is inconsistent,...

Are There Any Tools to Help Find Common Pitfalls in Ontologies?

by Dave McComb | Oct 29, 2012 | The Whiteboard

Yes. Check out http://oeg-lia3.dia.fi.upm.es/oops/. The authors looked through the literature and discovered 29 common pitfalls that arise when building ontologies. Code has been written to automatically find 21 of the 29 pitfalls. Try it out and give the authors...

What is the real difference between “on premise” systems and SaaS?

by Dave McComb | May 18, 2012 | The Whiteboard

They can be the same software. That isn’t the essential difference. There are many exceptions and edge cases but the central difference in moving from on premise to SaaS is that you are moving from a large capital budget item that takes a long time to approve to...

How do you handle a two phased commit in an SOA environment?

by Dave McComb | May 16, 2012 | The Whiteboard

There are four approaches (and a couple of the can be combined). The first is to implement on top of XP compliant data bases that allow the services to accept a commit to but still wait for the final confirmation. Given the heterogeneity of most environments this is...

Semantic Power Tools – Inference and Composition

by Dave McComb | May 14, 2012 | The Whiteboard

Inference is one of the ways that semantic technology simplifies information systems. Many of the manual assertions that must be made in the traditional systems can happen automatically in a semantic model. The more things you can infer, the fewer you need to assert,...

Why aren’t people achieving the benefits of SOA?

by Dave McComb | May 11, 2012 | The Whiteboard

The cynical response is to invoke the “Gartner Hype Cycle” and say it’s been overhyped. But that just begs the question: why do things get overhyped? In general the reason is that someone comes up with a new approach to solving a vexing problem. At...

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