Event-based Dissemination and

Processing of Geospatial Information

Welcome, Introduction, Motivation

Pre-conference workshop at the 20th AGILE International Conference

on Geographic Information Science, Wageningen, May 9, 2017

Simon Jirka, Christoph Stasch

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Organizing Committee

Simon Jirka

52°North

Christoph Stasch

52°North

Albert Remke

ESRI Germany

Matthes Rieke

52°North

Andreas Wytzisk

HS Bochum

Alexander Kotsev

JRC

Lars Bernard

TU Dresden

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Schedule

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Participants

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Prospective.HARVEST project

5

How are the infield yield levels up front?

When does the next transport wagon arrive?

Where are the unloading points?

At what time do I have to arrive at the forage

harvester?

How many transport wagons are needed?

How is the ripeness?

What is the best field order?

When is how much biomass

arriving?

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Prospective.HARVEST Approach

Geoprocessing Central platform

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General OGC Architecture

Web Map

Service (WMS): Maps as background

images

(jpg, tiff, …)

Web Coverage

Service (WCS):Raster data

(geoTiff, netCDF, …)

Web Feature

Service (WFS): Vector data

(GML, shp)

Web Processing

Service (WPS):Geo-processing,

simulations, …

Sensor

Observation

Service (SOS):Sensor measurements

(O&M, SWE Common,…)

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Traditional Interaction Patterns

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OGC Pub/Sub

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SWE Eventing

• Sensor Alert Service

• Sensor Event Service

• Web Notification Service

• Pub-Sub Extension

• SensorThings API: MQTT

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Sensor Web Eventing Example

Observations

SESSubscribe Alerts

WNS

SMSEmailFax

Phone Call

Notify

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EML Example

• Complex processing (EML based):

– Complex pattern: „low temperature followed by high

temperature“

– a warning per hot period

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EML Example

• Fire detection

• Hot periods combined with smoke detection

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Mainstream Frameworks

Source: https://github.com/cncf/landscape

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Research Topics (i)

Galton, A. “Outline of a Formal Theory of Porcesses and Events, and Why

GIScience Needs One.”In S. I. Fabrikant et al., Spatial Information Theory,

Proceedings of the 12th International Conference COSIT 2015, Springer-

Verlag LNCS 9368, 2015, pages 3-22.

ISBN 978-3-319-23373-4

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Research Topics (ii)

Cugola, G. & Margara, A.

Processing Flows of Information: From Data Stream to Complex Event

Processing

ACM Comput. Surv., ACM, 2012, 44, 15:1-15:62

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Research Topics (iii)

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Goals

• Analyze Requirements

• Identify Gaps/Challenges

• Discuss Research Agenda

• Think about Joint Proposals

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52°North Student Innovation Challenge 2017

“Bridging IoT and Sensor Web Applications ”

• Explore link between IoT & Sensor Web technology. Potential projects:

– IoT clients for feeding data from sensors into Sensor Web infrastructures

– Processing and analysis of observation streams (event streams)

– Integration of heterogeneous IoT data sources by means of Sensor Web and Semantic Web technologies

• Top 3 implement proofs of concepts & present results @ Geospatial Sensor Web Conference 2017

• Application deadline: May 29, 2017

• Prizes: 1st – 2000 €, 2nd – 1000 €, 3rd – 500 € plus travel costs

• Infos: http://52north.org/innovationprize

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Geospatial Sensor Webs Conference 2017

Focus: “ Geospatial Sensor Webs – from data

information in the Sensor Web”

Importance of Sensor Web technology in conjunction with tools for data analysis,

processing and visualization

Status quo & future directions of Sensor Web standards/technology

Challenges of processing Sensor Web data

Dates: August 28 - 30, 2017

Location: FOM in Münster

Call for Presentations

Infos: http://52north.org/conference

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Outlook – Morning Session

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Discussion• Projects/Use Cases/Requirements

– Lorenzo‘s Slide

• Description of Processing Workflows

– Orchestration

– Provenance

– Semantics

• Standards/ Reference Architectures

• Large Datasets/Lamda Architecture

• Data/Event Modelling

• Semantics of Events