[heb] evolution: from water to land

8/14/2019 [HEB] Evolution: From Water to Land

1/12

BAR ILAN UNIVERSITY

COMPUTER SCIENCE

Artificial Life

Second Project

Evolution from sea to land


2/12

!"

!#

!#

#""$#

#""#

!#"%&'(


3/12

!#!##)!

#"##)

Pederpes finneyae * was discovered in Dumbarton and is thought to be the missinglink 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)


4/12

!#"!+!#

)#",#"""!#!"")

,#%)!#!#))!!#!#

)

'!""X)!#!#

!#

X

#,#""+)

!)

! ' )!#!#

)


5/12

!"+!#!#!)+!

,)

""#+,",,"!")

+,!",#)

)PARAMETERS

XInitial genotype200Gene Pool capacity

RandomlyDelete genotype

1Simulated creatures

Always 0 degreesInitial placement

0.1Initial elevation

SELECTION20unchanged64mutated

16Crossed over

0Minimal similarityTournamentSelection rule

FITNESS

0Constant

0Life span

velocity*Body parts

Body joints0Brain neurons

0Brain connections

distance0Vertical position

0Vertical velocity

0Criteria normalization

0Similarity specification

ENERGY

5000Starting energy

1Idle metabolism

0Automatic feeding

200Food energy

Food genotype

1Initial multiplier0Aging time


6/12

WORLD

Type Flat surface

Size 20

Map

Water level [PER EXPERIMENT]Boundaries None

Gravity 1

MORPHOLOGY

Add remove a stick X 0.05

Add remove a junction 0.02

Add remove a comma 0.02

Add remove a modifier 0.1

Exclude modifiers Ee

NEURON NET

Add remove a neuron 0.05Add remove a neural connection 0.1

Add remove a neuron property setting 0.1

Change connection weight 1

Change property value 0.05

FITNESS PARAMETERS

!#",#+#",!)

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

!!#)

%

w2.sim[simulation parameters]

[first creature 25 mil steps] w2-25m.gen

[first creature next 8 mil steps] w2-25m+7m.gen

[second creature 38 mil steps] w2-0m+38m.gen

[water level = 4]'!

#"[water level = -1]-".))


7/12

!fitness)$'velocity)$'distance$))

(LaX[|, 1:0.639]X[T], cFX[@, -1:-10]MMsXXMsXAX[|]X)

!#"fitness

)$'velocity)'distance$)$)

(LaX[|, 1:8.166]X[T], cFX[@, -1:-7.762]MMsX[|, 1:1.611]X[T], cX)


8/12

+!fitness)$'

velocity)'distance)$)

FqqXX[|,1:0.325,p:0.25]X[T][|,1:3.62][G]

!#!fitness

!"fitness#)-)).

,#!,#,"

-1)!/"#!#)


9/12

$

#""#")"#"#

")'!##*

)

/""46.711385.6555

0.003180.00578

15.900628.8794

83.02910.0056

28.0041

/"" 47.140763.54620.003210.0043

16.043721.5111

24.98670.001732

8.66052


10/12

/#fitness!!#!

-!.!#-).

fitness

0

20

40

60

80

100

120

140

1 2 3

experiment number

fitnesslevel

water

water land

land

/*evolution steps"')"!!+!#/")

'!#*)

evolution steps

0

5

10

15

20

25

30

35

40

1 2 3 4

experiment number

stepsinmillions


11/12

!"!fitness'joints#",joints)!##"!joints)

!#,!joints)!#joints!"

!)

joints

0

1

2

3

4

5

6

7

8

9

1 2 3

experiments

nu

mberofjoints

water

water land

land

"+#fitness*)#

#!)

!,)!!)

fitnessvelocitydistance

*))$)

)$))


12/12

"#") # !) !#!#

!#'!))!#,

a)",#",

b),'"")

)""!#+!##((!#

()!""fitness,#)

)load&SIM#"'ALIFE\a),#sea_parameters.simb),#land_parameters.sim

)load&GEN#"'*ALIFE\a)Exp1b)Exp2c)Exp3d)Exp4

)%a)exp1_0-38.genb)exp1_25.genc)exp1_25-32.gen

d)Exp2_0-32.gene)Exp2_25.gen

f)Exp2_25-32.gen

g)Exp3_0-34.genh)Exp3_25.geni)Exp3_25-32.gen

j)Exp4_0-32.gen

k)Exp4_25.genl)Exp4_25-32.gen

[heb] evolution: from water to land

Documents