Formalisation of code lists and their values – The case of ISO 19152 Land Administration Domain Model

Abdullah Kara, Alexandra Rowland, Peter van Oosterom, Erik Stubkjær, Volkan Cagdas, Erwin Folmer, Christiaan Lemmen, Wilko Quak, Laura Meggiolaro

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Abstract

A code list in Unified Modeling Language (UML), a simple list of values without any structure, can be employed as a simple data type to further capture the semantics of a domain. The code list values as used in international standards (e.g. ISO and OGC) are generally presented without definition, reference to the source of a definition, multi-lingual alternative term support and semantic relationships (e.g. hierarchical, associative). Moreover, managing, implementing, and maintaining UML code lists can be considered as a difficult task since they generally do not provide structured and semantically enriched values. This is also true in the case of ISO 19152:2012 Land Administration Domain Model (LADM), which is currently under systematic review and adding more content, meaning and structure to code list values could be considered an improvement. In last decade, there is a growing interest in representing terms as well as code list values using Semantic Web technologies (e.g. RDF, OWL, SKOS, SPARQL) and making them available on a registry (e.g. ISO/TC211 Geolexica, OGC Definitions Server, INSPIRE code list register, BARTOC), including land administration domain (e.g. CaLAThe, LandVoc). However, there is no joint understanding in structuring, extending and maintaining code list values, which may be achieved through an agreed metamodel. Such a metamodel should also provide insight into content, localisation (multi-lingual support), versioning and implementation. The aim of this study is to propose a framework (basically a metamodel) for structuring, extending, maintaining and implementing semantically enriched code lists, and to discuss the application of the proposed framework to be included in the revision of LADM. To achieve this aim, the requirements for refined code list values are firstly collected considering existing thesauri, vocabularies and standards. Subsequently, a metamodel is proposed for the refined code list. The proposed metamodel is applied to a code list of LADM as well as a part of a selected country profile.
Original languageEnglish
Title of host publication10th LAND ADMINISTRATION DOMAIN MODEL WORKSHOP
Editors Abdullah Kara, Rohan Bennett, Christiaan Lemmen, Peter van Oosterom
Number of pages22
PublisherInternational Federation of Surveyors
Publication dateMar 2022
Pages333-354
ISBN (Print) 978-87-92853-62-2
ISBN (Electronic)978-87-92853-66-0
DOIs
Publication statusPublished - Mar 2022
Event10th LAND ADMINISTRATION DOMAIN MODEL WORKSHOP - Dubrovnik, Croatia
Duration: 31 Mar 20222 Apr 2022

Conference

Conference10th LAND ADMINISTRATION DOMAIN MODEL WORKSHOP
Country/TerritoryCroatia
CityDubrovnik
Period31/03/202202/04/2022

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