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An Event Driven Architecture for Decision Support Thomas Everding & Theodor Foerster Geoinformatik 2011, Münster, Germany

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GENESIS <ul><li>GENeric European Sustainable Information Space for environment </li></ul><ul><li>FP-7 Project </li></ul><ul><li>2008 – 2011 </li></ul><ul><li>Building generic collaborative information networks </li></ul><ul><li>Based on ISO, OGC, W3C and OASIS standards </li></ul><ul><li>http://www.genesis-fp7.eu/ </li></ul>

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Problem <ul><li>Decision making relies on (environmental) monitoring </li></ul><ul><li>Public health affected </li></ul><ul><ul><li>Pure information access not sufficient </li></ul></ul><ul><ul><li>Phenomena have to be detected and processed as fast as possible </li></ul></ul><ul><li>Event Driven Architecture </li></ul><ul><ul><li>data acquisition </li></ul></ul><ul><ul><li>pre-processing </li></ul></ul><ul><ul><li>dissemination </li></ul></ul>

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Use Case <ul><li>Water quality monitoring </li></ul><ul><li>Drinking water supply and recreational area </li></ul><ul><li>Cyanobacterial blooming in Summer </li></ul>

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Villerest reservoir, France Images: Google Maps

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Bloom Detection <ul><li>Cyanobacterial bloom is detected using remote imagery </li></ul><ul><li>Indicator: variation of pH value in 24 hours </li></ul>modified from GENESIS D3100.3, p. 62f. Number Name Origin Units Data values Threshold 3 pH Local measurement pH units 0 to 14 See below 3b pH variation Internal pH units / day -14 to 14 Abs(pH variation) >= 0.5 3c pH status Internal Normal | abnormal If (3b >= 0.5) -> abnormal, else normal

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Architecture Gateway Integration Layer Event Processing Raster Processing Raster Data Store Decision Maker pH values Sensor Alert Service Enterprise Service Bus Sensor Event Service Web Processing Service Web Coverage Service

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<ul><li>Indicator: pH value variation >= 0.5 within 24 h </li></ul>ESP Algorithm Sensor Event Service 24h max - min low  high >= 0.5 < 0.5 pH value max min dif dif high low critical pH variation

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Benefits <ul><li>On the fly processing </li></ul><ul><ul><li>Measurements are processed as soon as they arrive </li></ul></ul><ul><ul><li>Decision makers are notified </li></ul></ul><ul><li>Pluggable architecture </li></ul><ul><ul><li>Data & processes </li></ul></ul><ul><li>Enterprise Service Bus </li></ul>

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Thanks for your attention! <ul><ul><li>Thomas Everding & Theodor Foerster </li></ul></ul><ul><ul><li>{everdingt; theodor.foerster}@uni-muenster.de </li></ul></ul><ul><li>ifgi.uni-muenster.de </li></ul><ul><li>swsl.uni-muenster.de </li></ul><ul><li>www.genesis-fp7.eu </li></ul>