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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; ;; AGENT_ZERO ;; MOVIE 4 Parable 2 Code. Version 1.0 ;: Agent_Zero Initiates ;; ;; Joshua M. Epstein ;; March 2011 ;; Sliders [25,0,4,1,1] ;; Revised December 2013 ;; Book Seed 1 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; to use-new-seed let my-seed new-seed output-print word "Generated seed: " my-seed random-seed my-seed end to use-seed-from-user let my-seed read-from-string user-input "Enter a random seed (an integer):" output-print word "User-entered seed: " my-seed random-seed my-seed end directed-link-breed [red-links red-link] links-own [weight] turtles-own [ affect learning_rate lambda delta threshold event_count disposition probability memory ] to setup-links ask turtle 0 [ create-red-link-to turtle 1] ask red-link 0 1 [ set color red set weight 0.1] ask turtle 0 [ create-red-link-to turtle 2] ask red-link 0 2 [ set color red set weight 0.1] ask turtle 1 [ create-red-link-to turtle 0] ask red-link 1 0 [ set color red set weight 0.7] ask turtle 1 [ create-red-link-to turtle 2] ask red-link 1 2 [ set color red set weight 0.1] ask turtle 2 [ create-red-link-to turtle 0] ask red-link 2 0 [ set color red set weight 0.7] ask turtle 2 [ create-red-link-to turtle 1] ask red-link 2 1 [ set color red set weight 0.1] end to setup __clear-all-and-reset-ticks ;use-new-seed use-seed-from-user setup-patches setup-turtles setup-links setup-MyLai ;setup-movie ; Uncomment to make movie tick end to setup-movie movie-start "out.mov" movie-grab-view repeat 65 [ go movie-grab-view ] movie-close end to setup-turtles set-default-shape turtles "person" create-turtles 3 ask turtle 0 [ setxy -9 -9 set color blue set affect 0.001 ; For delta > 0, affect(0) must be > 0, or it stays 0. set delta 0 set lambda 1 set learning_rate .1 set threshold 1.0 set event_count 0 set disposition 0 set probability 0 set memory [] repeat memory_length [set memory lput random-float 0 memory] ;set memory [0] ;set memory [0 0 0 0] ;set label who ] ask turtle 1 [ setxy 5 5 ; random-xcor random-ycor set color blue set affect 0.001 set delta 0 set lambda 1 set learning_rate .1 set threshold 1.0 set event_count 0 set disposition 0 set probability 0 ;set memory [ 1 3 5 7 8] set memory [] repeat memory_length [set memory lput random-float 0 memory] ;show memory ; set label who ] ask turtle 2 [ setxy 3 9 ; random-xcor random-ycor set color blue set affect 0.001 set delta 0 set lambda 1 set learning_rate .1 set threshold 1.0 set event_count 0 set disposition 0 set probability 0 set memory [] repeat memory_length [set memory lput random-float 0 memory] ;set memory [0 0] ;set label who ] end to setup-patches ask patches [set pcolor yellow + random 2] end to go if ticks >= 65 [stop] move-turtles activate-patches ;update-event_count update-affect update-probability update-disposition take-action deactivate-patches ;return-as-yellow do-plots1 do-plots2 do-plots3 tick end to update-event_count ask turtles[ if pcolor = orange + 1 [set event_count event_count + 1] ] end to update-affect ; Standard RW for delta=0. Standard logistic for delta=1. General: 0 < delta < 1 ask turtles [ if pcolor = orange + 1 [set affect affect + (learning_rate * (affect ^ delta) * (lambda - affect))] if pcolor != orange + 1 [set affect affect + (learning_rate * (affect ^ delta) * extinction_rate *(0 - affect))] ] end to update-probability ask turtles[ let current_probability (count patches in-radius vision with [pcolor = orange + 1]/(count patches in-radius vision)) set memory but-first memory set memory lput current_probability memory set probability mean memory ;set probability median memory ] end to update-disposition ask turtle 0 [ set disposition affect + probability + [weight] of red-link 1 0 * ([affect] of turtle 1 + [probability] of turtle 1) + [weight] of red-link 2 0 * ([affect] of turtle 2 + [probability] of turtle 2) - threshold] ask turtle 1 [ set disposition affect + probability + [weight] of red-link 0 1 * ([affect] of turtle 0 + [probability] of turtle 0) + [weight] of red-link 2 1 * ([affect] of turtle 2 + [probability] of turtle 2) - threshold] ask turtle 2 [ set disposition affect + probability + [weight] of red-link 0 2 * ([affect] of turtle 0 + [probability] of turtle 0) + [weight] of red-link 1 2 * ([affect] of turtle 1 + [probability] of turtle 1) - threshold] end to move-turtles ask turtles with [who != 0] [ right random 360 forward 1 ] end to take-action ask turtles [ if disposition > 0 [ask patches in-radius action_radius [set pcolor red - 3]] ] end to activate-patches ; Patches in specified region that are not dead. ask patches with [pxcor > -5 and pycor > -2] [if random 1000 < attack_rate and pcolor != red - 3 [set pcolor orange + 1]] end to deactivate-patches ask patches with [pxcor > -5 and pycor > -2] [if random 100 < 8 and pcolor != red - 3 [set pcolor yellow + random 2]] end to return-as-yellow ask patches [if random 100 < 2 [set pcolor yellow + random 2]] end to setup-MyLai ask patches with [pxcor < -5 or pycor < -2 ] [set pcolor yellow + random 2] end to do-plots1 set-current-plot "Disposition" set-current-plot-pen "turtle 0" plot [disposition] of turtle 0 set-current-plot-pen "turtle 1" plot [disposition] of turtle 1 set-current-plot-pen "turtle 2" plot [disposition] of turtle 2 end to do-plots2 set-current-plot "Probability" set-current-plot-pen "turtle 0" plot [probability] of turtle 0 set-current-plot-pen "turtle 1" plot [probability] of turtle 1 set-current-plot-pen "turtle 2" plot [probability] of turtle 2 end to do-plots3 set-current-plot "Affect" set-current-plot-pen "turtle 0" plot [affect] of turtle 0 set-current-plot-pen "turtle 1" plot [affect] of turtle 1 set-current-plot-pen "turtle 2" plot [affect] of turtle 2 end