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Developing error handling software for object-oriented geographical information / Matt Duckham (1999)  

Public Titre : Developing error handling software for object-oriented geographical information Type de document : Thèse/HDR Auteurs : Matt Duckham, Auteur ; Jane E. Drummond, Directeur de thèse Editeur : Glasgow : University of Glasgow Année de publication : 1999 Importance : 167 p. Format : 21 x 30 cm Note générale : Bibliographie Thesis submitted for the degree of Doctor of Philosophy, Department of Geography and Topographic Science Langues : Anglais (eng) Descripteur : [Termes IGN] application informatique [Termes IGN] architecture à trois niveaux [Termes IGN] base de données localisées [Termes IGN] base de données orientée objet [Termes IGN] implémentation (informatique) [Termes IGN] modèle d'erreur [Termes IGN] modèle orienté objet [Termes IGN] propagation d'erreur [Termes IGN] qualité des données [Termes IGN] système d'information géographique Index. décimale : THESE Thèses et HDR Résumé : (auteur) The inclusion of error handling capabilities within geographical information systems (GIS) is seen by many as crucial to the future commercial and legal stability of the technology. This thesis describes the analysis, design, implementation and use of a GIS able to handle both geographical information (GI) and the error associated with that GI. The first stage of this process is the development of an error-sensitive GIS, able to provide core error handling functionality in a form flexible enough to be widely applicable to error-prone GI. Object-oriented (00) analysis, design and programming techniques, supported by recent developments in formal 00 theory, are used to implement an error-sensitive GIS within Laser-Scan Gothic 00GIS software. The combination of formal theory and GIS software implementation suggests that error-sensitive GIS are a practical possibility using 00 technology. While the error-sensitive GIS is an important step toward full error handling systems, it is expected that most GIS users would require additional high level functionality before use of error-sensitive GIS could become commonplace. There is a clear need to provide error handling systems that actively assist non-expert users in assessing, using and understanding error in GI. To address this need, an error-aware GIS offering intelligent domain specific error handling software tools was developed, based on the core error-sensitive functionality. In order to provide a stable software bridge between the flexible error-sensitive GIS and specialized error-aware software tools, the error-aware GIS makes use of a distributed systems component architecture. The component architecture allows error-aware software tools that extend core error-sensitive functionality to be developed with minimal time and cost overheads. Based on a telecommunications application in Kingston-Upon-Hull, UK, three error-aware tools were developed to address particular needs identified within the application. First, an intelligent hypertext system in combination with a conventional expert system was used to assist GIS users with error-sensitive database design. Second, an inductive learning algorithm was used to automatically populate the error-sensitive database with information about error, based on a small pilot error assessment. Finally, a visualization and data integration tool was developed to allow access to the error-sensitive database and error propagation routines to users across the Internet. While a number of important avenues of further work are implied by this research, the results of this research provide a blueprint for the development of practical error handling capabilities within GIS. The architecture used is both robust and flexible, and arguably represents a framework both for future research and for the development of commercial error handling GIS. Note de contenu : 1. Introduction 1.1. Error and truth: definitions and concepts 1.2. Fitness for use 1.3. Development of error handling in GIS 1.4. Research aims 1.5. Thesis structure 2. Data quality and models of error 2.1. Data quality standards 2.2. Research error models 2.3. A conceptual model of information systems 3. Object-oriented theory and technology 3.1. Object-oriented concepts 3.2. Object-oriented development tools 3.3. Object-orientation in GIS 3.4. A theory of objects 3.5. Conclusions 3.6. Selected bibliography 4. Error-sensitive GIS: theory 4.1. An object-oriented data quality model 4.2. Formal analysis model 4.3. Conclusions 5. Error-sensitive GIS: implementation 5.1. Error-sensitive GIS implementation: Any database 5.2. Aggregation relationships: Any object 5.3. Implementation performance: Any quality 5.4. Example error-sensitive object system 5.5. Conclusions 6. Error-aware GIS: component architecture 6.1. Error-aware GIS: a challenge and an opportunity 6.2. Distributed component architecture 6.3. Implementing a three-tier distributed system 6.4. Error-sensitive GUI 6.5. Conclusions 7. Error-aware GIS: quality schema 7.1. Telecommunications application 7.2. Intelligent quality schema definition tool 7.3. Implementation results 7.4. Conclusions 8. Error aware GIS: quality capture 8.1. Induction and data quality 8.2. Optimising the induction algorithm 8.3. Implementation results 8.4. Conclusions 9. Error-aware GIS: quality use 9.1. Data integration and quality mapping 9.2. Internet-based tool design 9.3. Error propagation model 9.4. Implementation results 9.5. Conclusions 10. Summary and conclusions 10.1. Error handling review 10.2. Further work 10.3. Closing remarks Numéro de notice : 19389 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE/INFORMATIQUE Nature : Thèse étrangère Note de thèse : PhD thesis : Geography and Topographic Science : University of Glasgow : 1999 En ligne : https://pdfs.semanticscholar.org/4bed/8b368849d16d47c3250f7151305de4d3c28e.pdf Format de la ressource électronique : URL Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=82309

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Code-barres	Cote	Support	Localisation	Section	Disponibilité
19389-01	THESE	Livre	Centre de documentation	Thèses	Disponible