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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; ;; AGENT_ZERO ;; ;; MOVIE 7 Code. Version 1.0 ;; ;; Latane-Darley Solo ;; ;; ;; ;; Joshua M. Epstein ;; ;; December 2010 ;; ;; Sliders [19, 0, 4, 1, 1] ;; ;; Note: Affect-Probability Entanglement ;; ;; is OFF in update-probability routine ;; ;; 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 __clear-all-and-reset-ticks ;use-new-seed use-seed-from-user setup-patches setup-turtles ; setup-links ; movie-start "out.mov" ; Uncomment block to make movie ; movie-grab-view ; repeat 750 ; [ go ; movie-grab-view ] ; movie-close tick end to setup-turtles set-default-shape turtles "person" create-turtles 1 ask turtle 0 [ setxy 7 7 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 .05 set threshold 0.5 set event_count 0 set disposition 0 set probability 0 set memory  repeat memory_length [set memory lput random-float 0 memory] ;set memory  ;set memory [0 0 0 0] ;set label who ] end to setup-patches ask patches [set pcolor yellow + random 2] end to go if ticks >= 50000 [stop] ;move-turtles activate-patches ;update-event_count update-affect update-probability update-disposition take-action deactivate-patches ; Turns them back to yellow from orange. Room fills with smoke. do-plots1 do-plots2 do-plots3 tick end to update-event_count ask turtle 0[ 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 turtle 0 [ 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 turtle 0[ 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 ; ^ (1 - affect) ; Uncomment to entangle Affect with Probability ;set probability median memory ] end to update-disposition ask turtle 0 [ set disposition affect + probability - threshold ] end to take-action ask turtle 0 [ if disposition > threshold [setxy -9 -9] ] end to activate-patches 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 < 1 and pcolor != red - 3 [set pcolor yellow + random 2]] end to do-plots1 set-current-plot "Disposition" set-current-plot-pen "turtle 0" plot [disposition] of turtle 0 end to do-plots2 set-current-plot "Probability" set-current-plot-pen "turtle 0" plot [probability] of turtle 0 end to do-plots3 set-current-plot "Affect" set-current-plot-pen "turtle 0" plot [affect] of turtle 0 end