FAIR data symposium: how to automate data reuse in Mobility as a Service

Research challenges in automating adoption of datasets in the mobility domain

Transcript

1. pietercolpaert.be planner.js.org Pieter Colpaert pietercolpaert.be FAIR data in Mobility as a Service
2. pietercolpaert.be planner.js.org What would convince you to give up your car?
3. pietercolpaert.be planner.js.org Mobility as a Service You pay for a journey, regardless of modes used Challenges (i) Legal and fiscal enablers, (ii) early market development, (iii) end-user awareness, … but also (iv) technical challenge: How do you calculate a route with all these possibilities?
4. pietercolpaert.be planner.js.org How should we publish transport data on the Web?
5. pietercolpaert.be planner.js.org http://api.{transitcompany}/?from={A}&to={B} A web-service e.g., a plain old HTTP+JSON API
6. pietercolpaert.be planner.js.org http://api.{transitcompany}/?from={A}&to={B} &departuretime=2019-05-23T13:45Z &wheelchairaccessible=true &transit_modes=plane,railway,bus,car &algoritm_mode=shortest ... Problem Needs to handle any request possible
7. pietercolpaert.be planner.js.org Linked Data Fragments GTFS data dump Route planning algorithms as a service ⇒ If we “tile” or “fragment” data dumps, we can maybe get the best from both worlds?
8. pietercolpaert.be planner.js.org PT data is a long list of connections * See Connection Scan Algorithm by Ben Strasser et al. time Squares are connections*: DepartureStop ArrivalStop DepartureTime ArrivalTime
9. pietercolpaert.be planner.js.org Page X Page ... Page 2 Page 1 time next next When published in pages on the Web, route planning will need X requests instead of 1
10. pietercolpaert.be planner.js.org Everyone can set-up a custom route planner with this open data now … even in JavaScript from your browser... Try it yourself at https://linkedconnections.org
11. pietercolpaert.be planner.js.org CPU time on the server Linked Connections has a more lightweight interface Real world between these 2 values Average cache hit-rate of 78%
12. pietercolpaert.be planner.js.org Mutatis mutandis: roads Routable Tiles: fragmenting geospatial JSON-LD data in tiles P. Colpaert, B. Abelshausen, J. Rojas, H. Delva, and R. Verborgh, “Republishing Open Street Map’s roads as Linked Routable Tiles,” in Proceedings of the 16th ESWC: Posters and Demos, 2019.
13. pietercolpaert.be planner.js.org Mutatis mutandis: time series datasets Domain model: Linked Datex 2, hydra for hypermedia controls, Real-time and historic parking site availability
14. pietercolpaert.be planner.js.org Traffic lights as open data accessible from any browser Mutatis mutandis: time series datasets http://opentrafficlights.org
15. pietercolpaert.be planner.js.org Mutatus mutandis autocompletion: Tree Ontology
16. pietercolpaert.be planner.js.org How people experience cycle ways Published using Activity Streams in JSON-LD with a geojson frame
17. pietercolpaert.be planner.js.org Typescript SDK available at Planner.js.org
18. pietercolpaert.be planner.js.org Research challenges in FAIR How to automate query answering? 1. Ecosystem research: who does what? 2. Design of hypermedia Web APIs 3. Scalability: automating intermediaries 4. UX: Smart ways to show incremental results Thanks! You can reach me here: