Designing Linked Data Applications

A lot of (legacy) datasets can be combined with other datasets in order to increase their value. New technologies and ideas around the Semantic Web are evolving to make these enrichments possible. In recent years, the Linked Data principles have become the established standard for publishing data on the Semantic Web. With these techniques and...

Linked open government data

More and more governments are setting up data portals on the web where they publish open government data. The (re)use of this government data can create economic value and increase transparency. The linked data format is part of the Semantic Web and adds more meaning to data than conventional data formats, which improves reusability. It is...

Domain-aware ontology matching on the semantic web

The rise of the Semantic Web and Linked Open Data has led to a large number of different and heterogeneous datasets and ontologies published on the Web. This kind of heterogeneity of datasets has created a need to interlink them, i.e. to make explicit that two resources of different datasets in fact represent the exact same concept. This is the...

Knowledge-based optimisation of three-dimensional city models for car navigation devices

Three-dimensional maps are deemed better for navigation purposes as they offer a larger number and more realistic navigation cues than two-dimensional maps. Improvements in two key technologies have opened the doors towards utilization of 3D maps for car navigation devices. Advances in data acquisition technologies and data processing methods...

Towards a Web application for viewing Spatial Linked Open Data of Rotterdam

Governments and municipalities open up their data and publish spatial data on the Web, to be transparent to their citizens and to stimulate innovation. This spatial open data can be confusing for non-GIS experts, since data is published as either typical geo-formats or metadata is missing. Linked data could benefit in that regard. Linked data is...

Exploring the Use of the Semantic Web for discovering, retrieving and processing data from Sensor Observation Services

Developments such as smart cities, the Internet of Things (IoT) and the Infrastructure for Spatial Information in Europe (INSPIRE) are causing a growing amount of observation data to be produced. The Open Geospatial Consortium (OGC) has developed Sensor Web Enablement (SWE) standards for modelling and publishing this data online. However, their...

Smart Asset Management in the construction sector: A holistic research into utilising the potential of sensor technology

Double Degree Program - The introduction of integrated contracts in the construction sector results in shifting risks and responsibilities from the client to the contractor. In contrast to traditional forms of contracting, contractors become often also responsible for an operational period. The obligation to ensure availability and reliability...

How to solve spatial problems using linked-data: the case of planning a shopping center in Delft

The promotion of the data re-usability was the main motivation behind the conception of linked data. Spatial data can also be expressed as linked data. This thesis explores different approaches to utilize spatial data in linked data format, in order to determine if the technologies have matured enough to assist solving spatial problems. More...

Towards the linking of geospatial government data: A study on the semantic harmonisation between data from Dutch geo-registries

The growing complexity of many projects and applications require methods that help integrate vasts amounts of data coming from different sources. In all cases, semantic interoperability plays an important role - the meaning of content should be organized logically, as to allow machines to interpret it. The Semantic Web vision has been developing...

Bi-VAKs: Bi-Temporal Versioning Approach for Knowledge Graphs

Over time Linked Data collections are continuously subject to change because of numerous reasons. Users could insert new observations, or they could rectify erroneous statements in these knowledge graphs. In order not to lose historically import information, this trend of evolving Linked Data collections increases the need to version these...

A standards-based portal for integrated Land Administration information: A case study of the Netherlands

Land administration is the organized and systematic process of establishing and maintaining information about land. The efficient practice of land administration is anticipated to organize land registers for the provision of cross-sector and cross-border land administration services. Such a system should provide fundamental information regarding...