European NEtwork for RedistributingGeospatial Information to user Communities -Open Data

Stefano NativiPaolo MazzettiMiguel Ángel Latre AbadíaFrancisco J. López Pellicer

Virtual Hubs for Facilitating access toGeospatial Open Data in

Open SDI

ENERGIC OD has received funding from the European Union ICT Policy Support Programme (ICT PSP) under the Competitiveness and Innovation Framework Programme (CIP), grant agreement n° 620400. Este trabajo también ha sido parcialmente financiado por el Gobierno de España a través del proyecto TIN2012-37826-C02-01

European NEtwork for Redistributing Geospatial Information to user Communities - Open Data

� Interoperability: geo OD are highly heterogeneous� Data/metadata model and formats

� Coordinate Reference Systems

� Data services specifications

� Quality and reliability

� Semantics

� Usability� Complex service interfaces

� Complex metadata/data models/encodings

Main tech. barriers

MxN complexity

European NEtwork for Redistributing Geospatial Information to user Communities - Open Data

� Federation:� Strong mandate for imposing and enforcing the adoption of a

common specification.

� Example: INSPIRE

� Brokering:� No common specification is defined, specific components (brokers)

mediates and harmonizes (try) existing systems

� The broker acts as a hub for publishing, discovering and accessing open data

� Non geospatial example: CKAN

Tech. Approaches

European NEtwork for Redistributing Geospatial Information to user Communities - Open Data

Federation(in practice)

European NEtwork for Redistributing Geospatial Information to user Communities - Open Data

Brokering

VirtualHub

Upstream services

Downstream services

Midstream services

Resource provision

Interoperability,Policy harmonization,

Other VAS

User services

European NEtwork for Redistributing Geospatial Information to user Communities - Open Data

Why an open SDI may use a Virtual Hub?

VirtualHub

Open SDIs Other geospatial OD systems

Open SDI interfacesto access SDI andnon SDI OD

Other interfacesto access SDI andnon SDI OD

European NEtwork for Redistributing Geospatial Information to user Communities - Open Data

Example:ENERGIC OD Virtual Hub

National, regional, European and global Open Data Platforms

• Brokering Framework• Open Data platform crawler• Sensor platform• Crowdsourcing data publishing platform

• ESA Portal• 10 Pilot applications

• Standard interfaces• Restful API• Web API

M+N complexity

Virtual Hub

European NEtwork for Redistributing Geospatial Information to user Communities - Open Data

Insights from the technical point

� Openess requires to hide our domain complexity� Virtual Hubs users are app devs

� Openess requires spatial must not be special for non geo-devs� Yes for final users!

� How à e.g. one SDI hub, multiple open APIs� Widespread geospatial specifications (e.g. OGC and ISO)

� Lightweight specifications (e.g. OpenSearch)

� APIs focused for rapid implementation in JS

� And keep track of the evolving tech landscape (e.g. reactive applications)� Legally open + not widely technically usable à closed in practice

European NEtwork for Redistributing Geospatial Information to user Communities - Open Data

� Interested in the topic?� http://www.energic-od.eu/

� And an INSPIRE workshop this afternoon!� “Open Data Access and Harmonisation by Virtual Hub –

ENERGIC OD solutions”� Keynote speakers: Thomas Usländer, Dirk Frigne

� Consortium speakers: Stefano Nativi, Paolo Mazzetti, Stefan Braumann, Erwan Bocher and Silvano De Zorzi

� 14:00, room A

ENERGIC OD