Hajo Rijgersberg

The main difference is that the ontology is in Camel case now (e.g., degree_Celsius has become degreeCelsius now). The upper ontology has slight differences. Perhaps the most important one is...

Yes, in principle one can always work with scales, however in practice this often doesn't happen, since the use of units is sufficient. For example, one uses the units metre,...

I think what it is about is whether a scale has an absolute zero (that is called '0', so not he Celsius scale). With regard to for example energy, the...

Yes, but are the scales? I mean, 0 m/s = 0 mile per hour, etc.

Sounds good what you're writing in your first paragraph. I think you see this correctly! Indeed, quantities and unit/scales are coupled in OM. The class 'Quantity' has the properties commonlyHasUnit...

I wanted to include some RDF code here, to illustrate the above, but the indentation spaces appeared to get lost, which makes it quite unreadable. Does anyone know how to...

Thanks. However, it didn't work. It's probably me. For now, I hope to suffice with using dots (and XML, since I already had the code in that format). So here...

Yes, I can clarify that. In an attempt to clean up OM a bit and to remove some imbalance among the quantity classes, we have removed the class average speed...

You're welcome! Yes, you could do that, but apart from that I will also define it in OM 2 again, so that we'll enable that everyone will work with exact...

I have just uploaded a new version of om-2.0.rdf, where I have added the class AverageSpeed again. Thanks for your comment!