Publishing Transport Data for Maximum Reuse

Het publiceren van datasets in het transportdomein voor maximaal hergebruik

Pieter Colpaert

Supervisors: prof. dr. Erik Mannens and dr. ir. Ruben Verborgh

Proefschrift ingediend tot het behalen van de graad van Doctor in de industriële wetenschappen

Table of contents

  1. Introduction
  2. Open Data and interoperability
  3. Measuring interoperability
  4. Raising interoperability of governmental datasets
  5. Transport data
  6. Public Transit route planning over lightweight Linked Data interfaces
  7. Conclusion

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Mathematicians introduced various algorithms in order to calculate the best route home or calculate a shortest path. In each of these algorithms, the documented method is to (1) manually collect the data on one machine first. Then (2) the data can be fitted to the right internal model. Only then (3) the query evaluation happens. In order to innovate route planners today, research is needed to automate the first two steps. Open Data describes exactly this challenge: trying to publish data for maximum reuse. For the first step, Linked Connections is introduced. In this framework for publishing public transport data, all departure times are publishing in fragments of time. This way, a reuser can exploit the HTTP protocol to discover data, to keep them in cache, and to evaluate questions over multiple data sources on client-side. Thanks to a high cache hit-rate on the server, a good cost-efficiency for data publishers is attained. Making data more interoperable for step 2 is an organizational challenge. In this PhD, this challenge is tackled with an interdisciplinary team on a legal, technical, syntactic and semantic level with Flanders as use case.

Examination board

Prof. Oscar Corcho
Prof. Filip De Turck
Prof. Sidharta Gautama
Dr. ir. Philip Leroux
Dhr. Björn De Vidts
Prof. Patrick De Baets
Prof. Erik Mannens
Dr. ir. Ruben Verborgh