Contextualising Ontologies with Image, Number and Rationality

Ontologies have been proven useful in areas such as information management and Artificial Intelligence. Based on ontologies, datasets using the same concepts can be integrated or converted automatically. The same concept however can represent different features depending upon perspectives. A concept “building” for instance can represent a...

Semantics-based Fusion for CityGML and 3D LandXML

For any developments that require spatial data, often the fusion of diverse spatial datasets is unavoidable. For instance in developing a 3D cadastral database serving various purposes, data may need to be sourced from different spatial datasets such as: building design models in BIM (Building Information Model) format, topographic and built...

Representing Roles in Formalizing Domain Ontology for Land Administration

In Land Administration, web portals have been developed to support various customers on property transactions, applications for registration of land titles, submission of survey plans for authority’s approval, etc. The user groups of these portals are huge and range from various parties, such as surveyors, government authorities, landowners,...

A Conceptual Framework of Representing Semantics for 3D Cadastre in Singapore

The Land Survey Division of Singapore Land Authority (SLA) has recently embarked on LandXML to replace the existing in-house cadastral submission format for cadastral job processing. The rationale of adopting LandXML is to support automated job processing for cadastral job submissions from registered surveyors. LandXML is capable of capturing...