Re: [ontolog-forum] How determine the instances of this concept?

[Alex Shkotin <alex.shkotin@xxxxxxxxx>]

Hi Joel,

last year we have done a work to formalize definitions for igneous rocks using IUGS classification as a start point.

Our article has been accepted for OWLED 2011.

Have a look at http://arxiv.org/abs/1106.1510v1 "Towards OWL-based Knowledge Representation in Petrology".

Our main reports are in Russian but you may use http://translate.google.com/ to get a feeling:-)

Most intersting for you may be report:

"Algorithm of igneous rocks classification and formal definition of the type of rock"

https://sites.google.com/site/alex0shkotin/formal-geology/acmgp-september

It would be nice to get more about a direction of your work.

Alex

2011/10/6 joel luis carbonera <joelcarbonera@xxxxxxxxx>

I'm modeling an ontology for the field of geology.

Trying to represent the ontology in first order logic, considering the necessary and sufficient conditions for each concept, I have found some challenges regarding to a specific concept, called Sedimentary Facies.

The current domain definition of Sedimentary facies is as follows:

A Sedimentary facies is a amount of rock in a body of rock, visually distinguishable (through discontinuities of visual properties) of adjacent amounts of rock in the same body of rock.

How can I formalize this concept in FOL?

Apparently, the instances of this concept are determined depending on each other, in a relative way. I'm not sure that I canlogically determine what are the instances of the concept.

Best regards.

Joel Luis Carbonera

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