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[ontolog-forum] Re Foundation ontology, CYC, and Mapping

To: <ontolog-forum@xxxxxxxxxxxxxxxx>
From: "sean barker" <sean.barker@xxxxxxxxxxxxx>
Date: Tue, 9 Mar 2010 22:30:43 -0000
Message-id: <4F8F8AF11794475BB9A79EB00AE66AFE@SMB>

Apologies for slow response to a couple of requests for sources on semantic incompatibilities.
This is the table we generated internally, based partly on older database work

Semantic Incompatibilities

Naming Conflicts

When objects representing the same concept may contain dissimilar names: conflicts due to either homonyms or synonyms.

Type Conflicts

When the same concept is represented by different types.

Key Conflicts

When different keys are assigned to the same concept in different schema.

Behavioural Conflicts

When different insertion/deletion policies are associated with the same class of objects in different schemata. e.g. deleting an object may leave an ?empty? object rather than a ?null reference?.

Missing Data

When different attributes are defined for the same concept.

Levels of Abstraction

When information about an entity is stored at dissimilar levels of detail. e.g. ?name? versus ?first_name? and ?last_name?.

Identification of Related Concepts

For example, two entities belonging to two different databases may not be equivalent but one entity may be a generalisation of the other entity.

Scaling Conflicts

When the same attribute of an entity is stored in dissimilar units.

it is based on/taken from

[1]    Aykut Firat, Information Integration Using Contextual Knowledge and Ontology Merging. MIT (Sloan School of Management) Ph. D thesis, September 2003.

[1]    M. P. Reddy, B. E. Prasad, P. G. Reddy, Amar Gupta, A Methodology for Integration of Heterogeneous Databases, IEEE Transactions on Knowledge and Data Engineering, Vol. 6, No. 6, December 1994.

There are some other papers dating from the mid-nineties, but they have not survived my various office moves.

Sean Barker

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