The ecology centre university of queensland australia Zonae Cogito - A decision support system for.

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Presentation transcript:

the ecology centre university of queensland australia Zonae Cogito - A decision support system for the real world FOSS 4G Conference 2009 Matthew Watts Romola Stewart Daniel Segan Hugh

Software environment Developing countries have limited budgets for Commercial GIS, MapWinGIS Active X control with Delphi and C++, Map Window Open Source GIS

Software evaluation Large data capacity for complex problems Fast and efficient code, O (n log n) (slows down almost linearly as n increases) Systematic validation assures algorithm correctness

View Marxan spatial output

Edit parameters

Simulated annealing dashboard

Assisted parameter calibration

Scenario Editor and Reporter

Simple multiple use zoning

C-Plan interface C-Plan Conservation Planning System

Related R&D Topics Marxan reserve selection software, Alternative objective functions (multiple use zoning, probabilistic threats and occurrences, asymmetric connectivity), Optimisation through Quantum tunneling.

What is Marxan? Ball and Possingham 2000, The most widely used reserve selection software in the world, “Give me a little of everything at the least cost”, limited by binary decision classification.

Where in the world is Marxan?

How simulated annealing works Optimization algorithm; finds configurations with low objective function scores Objective function score has 3 components 1) monetary cost of actions 2) connectivity penalty 3) target penalty A “whole of network” approach to planning

Marxan objective function Minimize subject to Cost + Connectivity + Target Achievement

Asymmetric connectivity The connectivity matrix can be symmetrical for non-directed connections, or asymmetrical for directed connections, Representation of connectivity graph.

Probabilistic treatment Minimize Maximise the probability that a zonation system meets objectives.

Multiple use zoning Minimize subject to and subject to and

What is Marxan with Zones? Enhanced functionality for multiple use zoning, Zones have objectives and constraints, Flexibility to address many planning problems.

Marxan with Zones output Binary configuration3 zone configuration

Marxan with Zones approach Explicit and systematic multiple objectives Simulated annealing algorithm Economic, social, cultural and biological objectives and constraints

Simulated Quantum Annealing Simulate Quantum algorithm on a Turing machine – Quantum Adiabatic Evolution 1,000,000 times faster than simulated thermal annealing?

Quantum tunneling Is a problem amenable to QT? What is the topology of a decision space?

Related Decision Point Articles Decision Point # 28 page 3, “Zonae Cogito - A decision support system for the real world”, Decision Point # 27 page 10, “Marxan with Zones - The world’s most popular conservation planning software just got more relevant”.

Marxan with Zones paper

/ do

Availability and acknowledgements Free software -