;;GLOBAL VARIABLES;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; globals [i countOfBCellsWhoRecognizedNewObject AffinityWithNewObject WhoOfBCellsRecognizedNewObject NewObjectProperties ] ;;i: counter ;;countDetectorsWhoRecognizedNewObject: it is used in recognizing new object by minimal one bodycell detector a this is ;;the reason why is created this variable ;;BREEDS OF AGENTS (SETS);;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; breed [BodyCells BodyCell] ;;cells of the human body (Set 1) breed [NewObjects NewObject] ;;new objects that will be recognized by BodyCells-Detectors, they will be separate in two groups ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; ;;OWN VARIABLES OF AGENTS;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; bodyCells-own [objectSign compared affinity ] ;;objectSign: every bodyCell (and all mobile agents in this model) has properties that are contained in objectSign variable ;;in our case, these properties are contained in that has six numbers: 0 - false, 1 - true ;;compared: bodyCell is compared or not compared with the common detector or bodyCell detector newObjects-own [objectSign compared] ;;objectSign: properties of new object contain in the ... has six numbers ... ;;compared: it is similar to comparator variable => we need to have overview of current state of new object ;;it means, we need to know whether new object has already been compared with BodyCell-Detector(s) ;;some identical variables are declared in twice, there is the reason for this ;;the reason is inheritance ... if we change breed of some agent, we need to transfer his variables with values into ;;new breed ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; ;;PROCEDURES; ;; to setup clear-all setup-global-variables setup-patches setup-BodyCells-Init setup-grid end to setup-global-variables set i 0 set countOfBCellsWhoRecognizedNewObject 0 set AffinityWithNewObject [] set WhoOfBCellsRecognizedNewObject [] set NewObjectProperties [] end to setup-patches ask patches [ set pcolor black ] end ;;Inicialization BodyCells ;;BodyCells before learning and classifying phase to setup-BodyCells-Init ask n-of 10 patches ;with [pxcor > -5 and pxcor < 5 and pycor > 0 and pycor < 10] [ sprout-BodyCells 1 [ set shape "bodycell" set label who set label-color white set compared false ;;cell has not been compared with any detector yet set affinity 0 ] ] ask BodyCell 0 [set objectSign [0 1 0 1 0 1 1 0 1 1 0 1 0 1 0]] ask BodyCell 1 [set objectSign [0 1 0 0 1 0 1 1 0 0 1 0 0 1 0]] ask BodyCell 2 [set objectSign [0 1 0 1 0 1 0 1 0 0 1 0 1 1 1]] ask BodyCell 3 [set objectSign [0 1 0 1 0 1 0 1 0 0 0 1 1 1 0]] ask BodyCell 4 [set objectSign [0 0 1 0 1 0 1 1 1 0 1 0 0 1 0]] ask BodyCell 5 [set objectSign [1 1 1 1 0 0 1 1 1 0 0 1 1 1 1]] ask BodyCell 6 [set objectSign [0 1 1 1 0 1 1 0 0 1 1 1 1 1 1]] ask BodyCell 7 [set objectSign [1 1 1 0 0 1 1 1 1 0 1 0 1 0 0]] ask BodyCell 8 [set objectSign [0 1 0 1 0 1 0 1 0 1 0 1 0 1 0]] ask BodyCell 9 [set objectSign [0 1 0 1 0 1 0 1 1 0 0 1 0 0 1]] output-print "<<< NUMBERS (SELF-ANTIGENS) WERE CREATED >>>" output-print "We have these numbers for recognizing new objects ..." let k 0 while [k <= 9] [ ask BodyCell k [output-type who output-type " "] set k (k + 1) ] ask BodyCells [hide-turtle] output-print " " end to setup-grid let k -1 ;;x let j 2 ;;y while [j >= -2] [ while [k <= 1] [ create-turtles 1 [ setxy k j set shape "x" set size 0.1 set color red ] set k (k + 1) ] set j (j - 1) set k -1 ] end ;;the new object is created for testing detector capability to recognize ;;new object and to decide about origin of this object to create-new-object if (mouse-down? = true) [ask patch round mouse-xcor round mouse-ycor [ if (color-pen = "gray") [set pcolor 9] if (color-pen = "orange") [set pcolor 23] if (color-pen = "yellow") [set pcolor 43] if (color-pen = "green") [set pcolor 53] if (color-pen = "blue") [set pcolor 93] ] ] end to recognize-new-object filling-the-list add-list-to-the-new-object classification-of-new-object decision init-values end to filling-the-list let x -1 let y 2 while [y >= -2] [ while [x <= 1] [ ask patch x y [ ifelse (pcolor = 9 or pcolor = 23 or pcolor = 43 or pcolor = 53 or pcolor = 93 ) [set NewObjectProperties lput 1 NewObjectProperties] [set NewObjectProperties lput 0 NewObjectProperties] ] set x (x + 1) ] set y (y - 1) set x -1 ] end to add-list-to-the-new-object create-NewObjects 1 [ set compared false set objectSign NewObjectProperties set hidden? true ] output-print " " ask one-of NewObjects [output-type "New object has these properties:" output-print objectSign] end ;;there is inverse logic in contrast to comparing BodyCell and Detector in the second phase to classification-of-new-object repeat (count BodyCells) ;;according to count of new objects ... repeat ... [ ask one-of BodyCells with [compared = false] ;;randomly-chosen object that has not already beed compared with all BodyCells detectors ;;ask comparing with randomly-chosen BodyCell-Detectors [ while [i <= 14] ;;comparing one new object with one BodyCells-Detector [ if (item i objectSign = item i [objectSign] of one-of NewObjects) [set affinity (affinity + 1)] ;;there is a similarity between New object and BodyCell-Detector set i (i + 1) ;;we will go to the next item of the list ] ;;we are in the end of comparing one new object with one BodyCells-Detector set i 0 set compared true if ((affinity / 15) * 100) >= SelectedAffinity ;;affinity in percentage [ set countOfBCellsWhoRecognizedNewObject (countOfBCellsWhoRecognizedNewObject + 1) set WhoOfBCellsRecognizedNewObject lput who WhoOfBCellsRecognizedNewObject set AffinityWithNewObject lput affinity AffinityWithNewObject ] ;;BodyCell is able to recognize new object ] ] end to decision output-print " " output-print "New object is similar to this/these number/numbers:" let z 0 while [z < length WhoOfBCellsRecognizedNewObject ] [ output-type "number:" output-type item z WhoOfBCellsRecognizedNewObject output-type " " output-type "in" output-type " " output-type ((item z AffinityWithNewObject) / 15 * 100) output-print "%." set z (z + 1) ] if (countOfBCellsWhoRecognizedNewObject < 1) [ output-print "This object was not recognized by none self-antigen!!!" ] end to init-values set WhoOfBCellsRecognizedNewObject [] set AffinityWithNewObject [] set countOfBCellsWhoRecognizedNewObject 0 ask BodyCells [set compared false set affinity 0] set NewObjectProperties [] end @#$#@#$#@ GRAPHICS-WINDOW 438 105 672 509 1 2 74.7 1 20 1 1 1 0 0 0 1 -1 1 -2 2 0 0 1 ticks CC-WINDOW 5 828 818 923 Command Center 0 TEXTBOX 36 35 809 75 RECOGNITION OF NUMBERS WITH MODIFIED VERSION OF THE ALGORITHM OF POSITIVE SELECTION 15 105.0 1 BUTTON 139 269 318 304 NIL setup NIL 1 T OBSERVER NIL NIL NIL NIL SLIDER 137 111 322 144 SelectedAffinity SelectedAffinity 1 100 50 1 1 % HORIZONTAL OUTPUT 99 561 809 814 17 BUTTON 139 361 319 396 NIL recognize-new-object NIL 1 T OBSERVER NIL NIL NIL NIL BUTTON 139 314 319 349 NIL create-new-object T 1 T OBSERVER NIL NIL NIL NIL CHOOSER 138 169 321 214 color-pen color-pen "gray" "orange" "yellow" "green" "blue" 2 @#$#@#$#@ WHAT IS IT? ----------- This model is able to recognize numbers (in range: 0 - 9). Modified version of the algorithm of positive selection is used for it (learning phase of the immature T-lymphocytes are not contained in this implementation). HOW TO USE IT ------------- Firstly you have to set up affinity threshold value (slider SelectedAffinity) - sensitivity of the recognition. Higher value of the threshold means that more properties have to be same in recognition between our number and implemented numbers (self-antigens) in NetLogo. Slider color-pen is for setting color of the pen that will be used for creating new object. Then we can use SETUP button. This button inicializes the model. Numbers (self-antigens) are created on the background of the model, but they are not visible, because new object is painted by the user on this bacground later. After that, you have to create new number, that will be recognized by self-antigens that are invisible in the model. Use the button CREATE-NEW-OBJECT and paint squares on the selected red crosses on the NetLogo background. If you want to know, with which number is your number similar, click on the RECOGNIZE-NEW-OBJECT button and you will see information about recognition on the right side of the model - in the text area (output-window). EXTENDING THE MODEL ------------------- This model is not perfect :-), because the grid is rough. Data structure List was used for implementing properties of the numbers. I think that matrix is more suitable for it. AUTHOR ---------------------- Martina Husáková email: martina.husakova.2@uhk.cz @#$#@#$#@ default true 0 Polygon -7500403 true true 150 5 40 250 150 205 260 250 airplane true 0 Polygon -7500403 true true 150 0 135 15 120 60 120 105 15 165 15 195 120 180 135 240 105 270 120 285 150 270 180 285 210 270 165 240 180 180 285 195 285 165 180 105 180 60 165 15 arrow true 0 Polygon -7500403 true true 150 0 0 150 105 150 105 293 195 293 195 150 300 150 bodycell true 0 Circle -1 true false 75 75 150 Circle -2674135 true false 90 90 120 bodycelldetector true 15 Circle -14835848 true false 73 73 152 Polygon -2674135 true false 90 30 135 105 165 105 210 30 Polygon -2674135 true false 90 270 135 195 165 195 210 270 Polygon -2674135 true false 270 210 195 165 195 135 270 90 Polygon -2674135 true false 30 90 105 135 105 165 30 210 box false 0 Polygon -7500403 true true 150 285 285 225 285 75 150 135 Polygon -7500403 true true 150 135 15 75 150 15 285 75 Polygon -7500403 true true 15 75 15 225 150 285 150 135 Line -16777216 false 150 285 150 135 Line -16777216 false 150 135 15 75 Line -16777216 false 150 135 285 75 bug true 0 Circle -7500403 true true 96 182 108 Circle -7500403 true true 110 127 80 Circle -7500403 true true 110 75 80 Line -7500403 true 150 100 80 30 Line -7500403 true 150 100 220 30 butterfly true 0 Polygon -7500403 true true 150 165 209 199 225 225 225 255 195 270 165 255 150 240 Polygon -7500403 true true 150 165 89 198 75 225 75 255 105 270 135 255 150 240 Polygon -7500403 true true 139 148 100 105 55 90 25 90 10 105 10 135 25 180 40 195 85 194 139 163 Polygon -7500403 true true 162 150 200 105 245 90 275 90 290 105 290 135 275 180 260 195 215 195 162 165 Polygon -16777216 true false 150 255 135 225 120 150 135 120 150 105 165 120 180 150 165 225 Circle -16777216 true false 135 90 30 Line -16777216 false 150 105 195 60 Line -16777216 false 150 105 105 60 car false 0 Polygon -7500403 true true 300 180 279 164 261 144 240 135 226 132 213 106 203 84 185 63 159 50 135 50 75 60 0 150 0 165 0 225 300 225 300 180 Circle -16777216 true false 180 180 90 Circle -16777216 true false 30 180 90 Polygon -16777216 true false 162 80 132 78 134 135 209 135 194 105 189 96 180 89 Circle -7500403 true true 47 195 58 Circle -7500403 true true 195 195 58 circle false 0 Circle -7500403 true true 0 0 300 circle 2 false 0 Circle -7500403 true true 0 0 300 Circle -16777216 true false 30 30 240 cow false 0 Polygon -7500403 true true 200 193 197 249 179 249 177 196 166 187 140 189 93 191 78 179 72 211 49 209 48 181 37 149 25 120 25 89 45 72 103 84 179 75 198 76 252 64 272 81 293 103 285 121 255 121 242 118 224 167 Polygon -7500403 true true 73 210 86 251 62 249 48 208 Polygon -7500403 true true 25 114 16 195 9 204 23 213 25 200 39 123 cylinder false 0 Circle -7500403 true true 0 0 300 detector false 15 Circle -14835848 true false 73 73 152 Polygon -2674135 true false 210 30 165 105 135 105 90 30 Polygon -2674135 true false 90 270 135 195 165 195 210 270 Polygon -7500403 true false 30 90 105 135 105 165 30 210 Polygon -7500403 true false 270 210 195 165 195 135 270 90 dot false 0 Circle -7500403 true true 90 90 120 environment false 0 Rectangle -16777216 true false 0 0 315 300 Polygon -2674135 true false 30 75 60 60 90 45 150 0 195 0 255 0 180 30 135 60 105 75 0 135 0 90 Polygon -2674135 true false 0 210 120 135 180 105 225 105 300 120 300 135 300 150 210 150 120 180 45 225 0 255 Polygon -2674135 true false 300 270 255 255 210 240 165 240 120 255 75 255 30 270 0 285 0 300 300 300 Polygon -2674135 true false 300 165 225 180 180 195 135 210 60 240 210 210 300 225 300 195 Polygon -2674135 true false 150 75 255 45 270 45 255 60 105 105 face happy false 0 Circle -7500403 true true 8 8 285 Circle -16777216 true false 60 75 60 Circle -16777216 true false 180 75 60 Polygon -16777216 true false 150 255 90 239 62 213 47 191 67 179 90 203 109 218 150 225 192 218 210 203 227 181 251 194 236 217 212 240 face neutral false 0 Circle -7500403 true true 8 7 285 Circle -16777216 true false 60 75 60 Circle -16777216 true false 180 75 60 Rectangle -16777216 true false 60 195 240 225 face sad false 0 Circle -7500403 true true 8 8 285 Circle -16777216 true false 60 75 60 Circle -16777216 true false 180 75 60 Polygon -16777216 true false 150 168 90 184 62 210 47 232 67 244 90 220 109 205 150 198 192 205 210 220 227 242 251 229 236 206 212 183 fish false 0 Polygon -1 true false 44 131 21 87 15 86 0 120 15 150 0 180 13 214 20 212 45 166 Polygon -1 true false 135 195 119 235 95 218 76 210 46 204 60 165 Polygon -1 true false 75 45 83 77 71 103 86 114 166 78 135 60 Polygon -7500403 true true 30 136 151 77 226 81 280 119 292 146 292 160 287 170 270 195 195 210 151 212 30 166 Circle -16777216 true false 215 106 30 flag false 0 Rectangle -7500403 true true 60 15 75 300 Polygon -7500403 true true 90 150 270 90 90 30 Line -7500403 true 75 135 90 135 Line -7500403 true 75 45 90 45 flower false 0 Polygon -10899396 true false 135 120 165 165 180 210 180 240 150 300 165 300 195 240 195 195 165 135 Circle -7500403 true true 85 132 38 Circle -7500403 true true 130 147 38 Circle -7500403 true true 192 85 38 Circle -7500403 true true 85 40 38 Circle -7500403 true true 177 40 38 Circle -7500403 true true 177 132 38 Circle -7500403 true true 70 85 38 Circle -7500403 true true 130 25 38 Circle -7500403 true true 96 51 108 Circle -16777216 true false 113 68 74 Polygon -10899396 true false 189 233 219 188 249 173 279 188 234 218 Polygon -10899396 true false 180 255 150 210 105 210 75 240 135 240 house false 0 Rectangle -7500403 true true 45 120 255 285 Rectangle -16777216 true false 120 210 180 285 Polygon -7500403 true true 15 120 150 15 285 120 Line -16777216 false 30 120 270 120 intruder true 15 Circle -2674135 true false 45 45 210 Circle -16777216 true false 120 45 60 Circle -16777216 true false 120 195 60 Circle -16777216 true false 195 120 60 Circle -16777216 true false 45 120 60 Polygon -13345367 true false 150 105 105 150 150 195 195 150 leaf false 0 Polygon -7500403 true true 150 210 135 195 120 210 60 210 30 195 60 180 60 165 15 135 30 120 15 105 40 104 45 90 60 90 90 105 105 120 120 120 105 60 120 60 135 30 150 15 165 30 180 60 195 60 180 120 195 120 210 105 240 90 255 90 263 104 285 105 270 120 285 135 240 165 240 180 270 195 240 210 180 210 165 195 Polygon -7500403 true true 135 195 135 240 120 255 105 255 105 285 135 285 165 240 165 195 line true 0 Line -7500403 true 150 0 150 300 line half true 0 Line -7500403 true 150 0 150 150 newobject true 0 Circle -13345367 true false 73 73 152 nonbodycelldetector true 15 Circle -14835848 true false 73 73 152 Polygon -7500403 true false 90 30 135 105 165 105 210 30 Polygon -7500403 true false 90 270 135 195 165 195 210 270 Polygon -7500403 true false 270 210 195 165 195 135 270 90 Polygon -7500403 true false 30 90 105 135 105 165 30 210 pentagon false 0 Polygon -7500403 true true 150 15 15 120 60 285 240 285 285 120 person false 0 Circle -7500403 true true 110 5 80 Polygon -7500403 true true 105 90 120 195 90 285 105 300 135 300 150 225 165 300 195 300 210 285 180 195 195 90 Rectangle -7500403 true true 127 79 172 94 Polygon -7500403 true true 195 90 240 150 225 180 165 105 Polygon -7500403 true true 105 90 60 150 75 180 135 105 plant false 0 Rectangle -7500403 true true 135 90 165 300 Polygon -7500403 true true 135 255 90 210 45 195 75 255 135 285 Polygon -7500403 true true 165 255 210 210 255 195 225 255 165 285 Polygon -7500403 true true 135 180 90 135 45 120 75 180 135 210 Polygon -7500403 true true 165 180 165 210 225 180 255 120 210 135 Polygon -7500403 true true 135 105 90 60 45 45 75 105 135 135 Polygon -7500403 true true 165 105 165 135 225 105 255 45 210 60 Polygon -7500403 true true 135 90 120 45 150 15 180 45 165 90 square false 0 Rectangle -7500403 true true 30 30 270 270 square 2 false 0 Rectangle -7500403 true true 30 30 270 270 Rectangle -16777216 true false 60 60 240 240 star false 0 Polygon -7500403 true true 151 1 185 108 298 108 207 175 242 282 151 216 59 282 94 175 3 108 116 108 target false 0 Circle -7500403 true true 0 0 300 Circle -16777216 true false 30 30 240 Circle -7500403 true true 60 60 180 Circle -16777216 true false 90 90 120 Circle -7500403 true true 120 120 60 tile log false 0 Rectangle -7500403 true true 0 0 300 300 Line -16777216 false 0 30 45 15 Line -16777216 false 45 15 120 30 Line -16777216 false 120 30 180 45 Line -16777216 false 180 45 225 45 Line -16777216 false 225 45 165 60 Line -16777216 false 165 60 120 75 Line -16777216 false 120 75 30 60 Line -16777216 false 30 60 0 60 Line -16777216 false 300 30 270 45 Line -16777216 false 270 45 255 60 Line -16777216 false 255 60 300 60 Polygon -16777216 false false 15 120 90 90 136 95 210 75 270 90 300 120 270 150 195 165 150 150 60 150 30 135 Polygon -16777216 false false 63 134 166 135 230 142 270 120 210 105 116 120 88 122 Polygon -16777216 false false 22 45 84 53 144 49 50 31 Line -16777216 false 0 180 15 180 Line -16777216 false 15 180 105 195 Line -16777216 false 105 195 180 195 Line -16777216 false 225 210 165 225 Line -16777216 false 165 225 60 225 Line -16777216 false 60 225 0 210 Line -16777216 false 300 180 264 191 Line -16777216 false 255 225 300 210 Line -16777216 false 16 196 116 211 Line -16777216 false 180 300 105 285 Line -16777216 false 135 255 240 240 Line -16777216 false 240 240 300 255 Line -16777216 false 135 255 105 285 Line -16777216 false 180 0 240 15 Line -16777216 false 240 15 300 0 Line -16777216 false 0 300 45 285 Line -16777216 false 45 285 45 270 Line -16777216 false 45 270 0 255 Polygon -16777216 false false 150 270 225 300 300 285 228 264 Line -16777216 false 223 209 255 225 Line -16777216 false 179 196 227 183 Line -16777216 false 228 183 266 192 tile stones false 0 Polygon -7500403 true true 0 240 45 195 75 180 90 165 90 135 45 120 0 135 Polygon -7500403 true true 300 240 285 210 270 180 270 150 300 135 300 225 Polygon -7500403 true true 225 300 240 270 270 255 285 255 300 285 300 300 Polygon -7500403 true true 0 285 30 300 0 300 Polygon -7500403 true true 225 0 210 15 210 30 255 60 285 45 300 30 300 0 Polygon -7500403 true true 0 30 30 0 0 0 Polygon -7500403 true true 15 30 75 0 180 0 195 30 225 60 210 90 135 60 45 60 Polygon -7500403 true true 0 105 30 105 75 120 105 105 90 75 45 75 0 60 Polygon -7500403 true true 300 60 240 75 255 105 285 120 300 105 Polygon -7500403 true true 120 75 120 105 105 135 105 165 165 150 240 150 255 135 240 105 210 105 180 90 150 75 Polygon -7500403 true true 75 300 135 285 195 300 Polygon -7500403 true true 30 285 75 285 120 270 150 270 150 210 90 195 60 210 15 255 Polygon -7500403 true true 180 285 240 255 255 225 255 195 240 165 195 165 150 165 135 195 165 210 165 255 tile water false 0 Rectangle -7500403 true true -1 0 299 300 Polygon -1 true false 105 259 180 290 212 299 168 271 103 255 32 221 1 216 35 234 Polygon -1 true false 300 161 248 127 195 107 245 141 300 167 Polygon -1 true false 0 157 45 181 79 194 45 166 0 151 Polygon -1 true false 179 42 105 12 60 0 120 30 180 45 254 77 299 93 254 63 Polygon -1 true false 99 91 50 71 0 57 51 81 165 135 Polygon -1 true false 194 224 258 254 295 261 211 221 144 199 tree false 0 Circle -7500403 true true 118 3 94 Rectangle -6459832 true false 120 195 180 300 Circle -7500403 true true 65 21 108 Circle -7500403 true true 116 41 127 Circle -7500403 true true 45 90 120 Circle -7500403 true true 104 74 152 triangle false 0 Polygon -7500403 true true 150 30 15 255 285 255 triangle 2 false 0 Polygon -7500403 true true 150 30 15 255 285 255 Polygon -16777216 true false 151 99 225 223 75 224 truck false 0 Rectangle -7500403 true true 4 45 195 187 Polygon -7500403 true true 296 193 296 150 259 134 244 104 208 104 207 194 Rectangle -1 true false 195 60 195 105 Polygon -16777216 true false 238 112 252 141 219 141 218 112 Circle -16777216 true false 234 174 42 Rectangle -7500403 true true 181 185 214 194 Circle -16777216 true false 144 174 42 Circle -16777216 true false 24 174 42 Circle -7500403 false true 24 174 42 Circle -7500403 false true 144 174 42 Circle -7500403 false true 234 174 42 turtle true 0 Polygon -10899396 true false 215 204 240 233 246 254 228 266 215 252 193 210 Polygon -10899396 true false 195 90 225 75 245 75 260 89 269 108 261 124 240 105 225 105 210 105 Polygon -10899396 true false 105 90 75 75 55 75 40 89 31 108 39 124 60 105 75 105 90 105 Polygon -10899396 true false 132 85 134 64 107 51 108 17 150 2 192 18 192 52 169 65 172 87 Polygon -10899396 true false 85 204 60 233 54 254 72 266 85 252 107 210 Polygon -7500403 true true 119 75 179 75 209 101 224 135 220 225 175 261 128 261 81 224 74 135 88 99 wheel false 0 Circle -7500403 true true 3 3 294 Circle -16777216 true false 30 30 240 Line -7500403 true 150 285 150 15 Line -7500403 true 15 150 285 150 Circle -7500403 true true 120 120 60 Line -7500403 true 216 40 79 269 Line -7500403 true 40 84 269 221 Line -7500403 true 40 216 269 79 Line -7500403 true 84 40 221 269 x false 0 Polygon -7500403 true true 270 75 225 30 30 225 75 270 Polygon -7500403 true true 30 75 75 30 270 225 225 270 @#$#@#$#@ NetLogo 4.0.4 @#$#@#$#@ @#$#@#$#@ @#$#@#$#@ @#$#@#$#@ @#$#@#$#@ default 0.0 -0.2 0 0.0 1.0 0.0 1 1.0 0.0 0.2 0 0.0 1.0 link direction true 0 Line -7500403 true 150 150 90 180 Line -7500403 true 150 150 210 180 @#$#@#$#@