[heb] Evolution: From Water To Land

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BAR ILAN UNIVERSITY COMPUTER SCIENCE

Artificial Life Second Project

Evolution – from sea to land

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Pederpes finneyae * was discovered in Dumbarton and is thought to be the missing link between swimmers and the landwalkers. Pederpes was named after 'Peder', Norwegian for Peter, Erpes meaning crawler. Finneyae was named after Mrs Sarah Finney, the lady who prepared the specimen)

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PARAMETERS

SELECTION

FITNESS

ENERGY

Initial genotype Gene Pool capacity Delete genotype Simulated creatures Initial placement Initial elevation

X 200 Randomly 1 Always 0 degrees 0.1

unchanged mutated Crossed over Minimal similarity Selection rule

20 64 16 0 Tournament

Constant Life span velocity Body parts Body joints Brain neurons Brain connections distance Vertical position Vertical velocity Criteria normalization Similarity specification

0 0

Starting energy Idle metabolism Automatic feeding Food energy Food genotype Initial multiplier Aging time

5000 1 0 200

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1 0

WORLD

MORPHOLOGY

NEURON NET

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Type Size Map Water level Boundaries Gravity

[PER EXPERIMENT] None 1

Add remove a stick X Add remove a junction Add remove a comma Add remove a modifier Exclude modifiers

0.05 0.02 0.02 0.1 Ee

Add remove a neuron Add remove a neural connection Add remove a neuron property setting Change connection weight Change property value

0.05 0.1 0.1 1 0.05

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FITNESS PARAMETERS " !

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return 0.0+this.velocity*3.0+this.strsiz*-1.0+this.strjoints*1.0+this.distance*3.0

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[water level = 4] "- [water level = -1]

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ALIFE\ #" ' SIM & load sea_parameters.sim , # )a land_parameters.sim , # )b ALIFE\ * #" ' GEN & load Exp1 )a Exp2 )b Exp3 )c Exp4 )d % exp1_0-38.gen )a exp1_25.gen )b exp1_25-32.gen )c

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Exp4_0-32.gen Exp4_25.gen Exp4_25-32.gen

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