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Richard Oliver Legendi AITIA International, Inc. Eötvös Loránd University Eclipse DemoCamps Indigo.

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Presentation on theme: "Richard Oliver Legendi AITIA International, Inc. Eötvös Loránd University Eclipse DemoCamps Indigo."— Presentation transcript:

1 Richard Oliver Legendi rlegendi@aitia.ai AITIA International, Inc. Eötvös Loránd University http://people.inf.elte.hu/legendi/ Eclipse DemoCamps Indigo Budapest - 24 June, 2011

2 Outline Agents? General (and academic) definition Why care? Motivation & Examples How Eclipse is related? Why the Eclipse Platform? What tools are available for the modelers? Who are the modelers? Conclusion 24/06/2011Richard O. Legendi, Eclipse DemoCamp Indigo2

3 Agents 24/06/2011Richard O. Legendi, Eclipse DemoCamp Indigo3

4 Agent? 24/06/2011 Replicator (Stargate) Richard O. Legendi, Eclipse DemoCamp Indigo4

5 Agent-Based Modeling (ABM) Agent Autonomous participators Complex systems with a set of interacting individuals Bottom-up computational model: By specifying low level (micro) rules we search for emergent global (macro) behaviour 24/06/2011Richard O. Legendi, Eclipse DemoCamp Indigo5

6 Agent-Based Modeling (ABM) Agents are usually: Autonomous Make own decisions Learn, adapt to the changes of the environment Interact through a specified communication topology (e.g., grid, networks, etc.) Not for prediction We search for behavioural patterns,...and what we can conclude. 24/06/2011Richard O. Legendi, Eclipse DemoCamp Indigo6

7 Motivation – An Example „The economy needs agent-based modelling - The leaders of the world are flying the economy by the seat of their pants, say J. Doyne Farmer and Duncan Foley. There is, however, a better way to help guide financial policies. In today’s high-tech age, one naturally assumes that US President Barack Obama’s economic team and its international counterparts are using sophisticated quantitative computer models to guide us out of the current economic crisis. They are not.” J. Doyne Farmer and Duncan Foley The economy needs agent-based modelling Nature Vol. 460, 6 August, 2009 24/06/2011Richard O. Legendi, Eclipse DemoCamp Indigo7

8 Economy The best models, both with their own flaws: 1. Econometric Empirical statistical models Time series analysis: fitted to past data Perfect to forecast a few quarters ahead As long as things stay more or less the same 2. „Dynamic stochastic general equilibrium” These models assume a perfect world...... and by their very nature rule out even the definition of crises 24/06/2011Richard O. Legendi, Eclipse DemoCamp Indigo8

9 Economy Other aspects: Heterogeneity? Individual preferences? Speculators? Non rational participators? And so on... Using ABM we can shift from these constraints (to other ones, of course) 24/06/2011Richard O. Legendi, Eclipse DemoCamp Indigo9

10 In General – Why care? Shift from the representative to heterogeneous actors In some cases, it could be easier to define a model Specifying micro instead of macro rules Using the ABM approach could be more intuitive for specific set of models 24/06/2011Richard O. Legendi, Eclipse DemoCamp Indigo10

11 More Examples Information diffusion Epistemology Supporting decision makers Tax evasion 24/06/2011Richard O. Legendi, Eclipse DemoCamp Indigo11

12 Eclipse 24/06/2011Richard O. Legendi, Eclipse DemoCamp Indigo12

13 How Eclipse is Related? Indigo: 62 project teams are part of the release Including an ABM platform 24/06/2011Richard O. Legendi, Eclipse DemoCamp Indigo13

14 Modeling with Eclipse? Eclipse provides many unique features that make it ideal for an ABM platform JDT/EMF/GMT/DTP/GEF/ZEST/BIRT/... Several initiations and directions Agent Modeling Platform Repast Simphony Ascape Fables Modeling Environment 24/06/2011Richard O. Legendi, Eclipse DemoCamp Indigo14

15 Formalization Dozens of frameworks exist Nearly all tool has its own way to define models Eclipse has a great support for all of them 24/06/2011Richard O. Legendi, Eclipse DemoCamp Indigo15

16 Modelers Small, but very heterogeneous research area ~15% has formal training in computer science 24/06/2011Richard O. Legendi, Eclipse DemoCamp Indigo16 Source: Computational social scientists: a draft directory and basic survey results http://lowlywonk.blogspot.com/2011/05/computational-social-scientists-draft.html http://lowlywonk.blogspot.com/2011/05/computational-social-scientists-draft.html

17 Agent Modeling Platform Tools for representing, editing, generating, executing and visualizing agent-based models Agent Modeling Framework Meta-model representation Agent Execution Framework UI to observ and manage simulation Agent Graphics Framework Visualization http://eclipse.org/amp/ 24/06/2011Richard O. Legendi, Eclipse DemoCamp Indigo17

18 Agent Modeling Platform Closely related to MetaABM and Ascape Generates models for different simulation platforms Validation: Escape, Ascape and Repast Simphony Similiar to EMF Ecore, but with agents 24/06/2011Richard O. Legendi, Eclipse DemoCamp Indigo18

19 Repast Simphony The Repast Suite is one of the most popular platforms Active user community Offers several ways to define a model Java/Groovy API ReLogo – a Logo-like DSL (cf. NetLogo) Flowcharts http://repast.sourceforge.net/ 24/06/2011Richard O. Legendi, Eclipse DemoCamp Indigo19

20 Google Summer of Code – 2011 Repast Simphony was selected for GSoC 2011 University of Michigan Center for the Study of Complex Systems 8 students work under the guidance of 4 mentors Developing new demo models Robotics, Swarm intelligence, Virus spreading, Mobile wireless sensor localization, etc. New features and testing the IDE http://code.google.com/p/cscs-repast-demos/ 24/06/2011Richard O. Legendi, Eclipse DemoCamp Indigo20

21 Fables Functional Agent-Based Language for Simulation Hybrid programming language Mixing functional, object-oriented and sequential elements Designed for agent-based simulations „Support modelers, not the professional programmers” Save as much on programming as possible Appropriate language concepts for each part of the model Syntax is close to formalism used in publications https://fables.aitia.ai https://mass.aitia.ai/fables https://mass.aitia.ai/fables 24/06/2011Richard O. Legendi, Eclipse DemoCamp Indigo21

22 Summary 24/06/2011Richard O. Legendi, Eclipse DemoCamp Indigo22

23 Summary Eclipse had a considerable influence on ABM tools Free and open source ABM simulation tools Built upon the Eclipse Platform ABMs getting attention One of the platforms is bundled into Indigo Tools are collectively under continuous development for several years 24/06/2011Richard O. Legendi, Eclipse DemoCamp Indigo23

24 Questions 24/06/201124Richard O. Legendi, Eclipse DemoCamp Indigo

25 Thank you for your attention! Richard Oliver Legendi rlegendi@aitia.ai AITIA International, Inc. Eötvös Loránd University http://people.inf.elte.hu/legendi/ Eclipse DemoCamps Indigo Budapest - 24 June, 2011 24/06/201125Richard O. Legendi, Eclipse DemoCamp Indigo

26 24/06/2011Richard O. Legendi, Eclipse DemoCamp Indigo26

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