Blecic Iccsa 2008

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Third International Workshop on "Geographical Analysis,Urban Modeling, Spatial Statistics“ GEOG-AN-MOD 08

Multi-Agent Geosimulation (MAG) ,[object Object],GIS geo-spatial datasets (buildings,infrastructures, terrain elements) mobile artificial agents ( pedestrians, consumers,household, vehicles ) + =

MAG models… ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Developing and executing MAG applications ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Developing and executing Geosimulation applications

Vector vs. Raster in MAG models ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Development Tools for Agent Simulations Missing dimensions?: model complexity, …

MAGI M ulti A gent G eosimulation I nfrastructure ,[object Object]

Main features of MAGI ,[object Object],[object Object],[object Object],Simulation monitoring Simulation steering Model development support

Main features of MAGI ,[object Object],[object Object],Different models (on-line and/or off-line coupling with MAGI) Outcomes for post-processing

The main ingredients of MAGI ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

GEOS ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

GEOS & MAGI ,[object Object],[object Object],[object Object],[object Object],[object Object],Point LineString LinearRing Polygon

MAGI Agents ,[object Object],[object Object],[object Object]

Layers ,[object Object],Global parameter and functions are also allowed (e.g. a parameter may affect more than one layers) Layer parameters are variables accounting for relevant properties which can influence the agents’ behaviour Layer functions can be defined and scheduled for execution during simulations (e.g. layer functions can update layer parameters)

Agent’s spatial context ,[object Object],[object Object],Standard CA neighbourhoods (static) Spatial contexts resulting from a (spatial) perception activity (dynamic) Custom neighbourhoods (static) On regular tessellations

Spatial perception ,[object Object]

Spatial perception ,[object Object],[object Object],[object Object],[object Object]

Spatial perception: indexing agents ,[object Object]

Spatial perception: binary Predicates ,[object Object],[object Object],[object Object],[object Object],B A

Spatial perception: computational efficiency A) agents avoid collisions but ignore other agents; B) agents avoid collisions and perceive other agents in their field of vision ,[object Object]

Agent behaviour ,[object Object],[object Object]

Scheduling ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

MAGI GUI Model structure editing Editing of behavioral rules and queries Model building Model execution

MAGI GUI XML model structure editing

MAGI GUI ,[object Object],[object Object],Samples are mapped into agent states

MAGI GUI Parameter monitoring and editing

A model step-by-step ,[object Object],[object Object],[object Object],Step 1 : definition of model structure ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

A model step-by-step ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Under development: ,[object Object],[object Object],[object Object],[object Object]

Blecic Iccsa 2008

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Blecic Iccsa 2008