Digital library of construction informatics
and information technology in civil engineering and construction


Paper w78-2002-27:
The LexiCon: structuring semantics

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Woestenenk K

The LexiCon: structuring semantics

Abstract: The ISO/PAS 12006-3:2000 "Framework for object oriented information exchange" provides a metamodel for structuring data relevant to the construction industry. The LexiCon, developed by STABU, is an implementation of that model. The LexiCon consists of a set of concepts, grouped into categories according to 12006-3. Each concept should be defined by a set of other concepts and is placed in a specialization hierarchy with other concepts of the same category. Ultimately, a set of basic concepts exists, from which all the other concepts are being derived, but which can only be described by a verbal definition. The concepts in the LexiCon represent the language of the construction industry. The terms of this language are extracted from numerous documents on several levels of formality, such as standards, building codes, specification systems, product information systems, technical dictionaries and classification systems. From these terms found in external documents concepts are then defined in the LexiCon with formal definitions. Terms from external documents can be in any human language, thus the LexiCon will be multi-lingual. Putting the concepts in the LexiCon in a specialization hierarchy has been a process of trial and error, so far. In principal, the number of possible hierarchies is endless, leading to also endless discussions. We are now trying to use a more systematic approach, based on the idea that, when a concept is defined by a set of other concepts, there will be a subset of these defining concepts that will dedicate where the described concept will fit into a hierarchy. A consistent hierarchy will be obtained when the subsets of defining concepts are subsets of defining concepts on a lower level of that hierarchy. It will then be possible to reorder the hierarchy into another hierarchy, by using different sets and subsets of defining concepts.



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Series: w78:2002 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.synthesis (0.018068) class.software development (0.012882) class.store (0.009845)
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Permission to reproduce these documents have been graciously provided by the Aarhus School of Architecture, Denmark. The assistnace of the editor, Prof. Kristian Agger, is gratefully aprecciated.


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