{"id":91,"date":"2014-05-26T02:35:00","date_gmt":"2014-05-26T00:35:00","guid":{"rendered":"http:\/\/www.swarm-intelligence.it\/wordpress\/?page_id=91"},"modified":"2014-07-26T14:36:00","modified_gmt":"2014-07-26T12:36:00","slug":"what-does-stigmergic-behaviour-means","status":"publish","type":"page","link":"https:\/\/www.swarm-intelligence.it\/wordpress\/what-does-stigmergic-behaviour-means\/","title":{"rendered":"WHAT DOES STIGMERGIC BEHAVIOUR MEANS?"},"content":{"rendered":"<div style=\"padding-bottom:15px; padding-top:2px;\" class=\"hupso-share-buttons\"><!-- Hupso Share Buttons - https:\/\/www.hupso.com\/share\/ --><a class=\"hupso_toolbar\" href=\"https:\/\/www.hupso.com\/share\/\"><img src=\"https:\/\/static.hupso.com\/share\/buttons\/dot.png\" style=\"border:0px; padding-top: 5px; float:left;\" alt=\"Share Button\"\/><\/a><script type=\"text\/javascript\">var hupso_services_t=new Array(\"Twitter\",\"Facebook\",\"Linkedin\");var hupso_background_t=\"#84FF5E\";var hupso_border_t=\"#FFE959\";var hupso_toolbar_size_t=\"medium\";var hupso_image_folder_url = \"\";var hupso_twitter_via=\"SwarmStrength\";var hupso_url_t=\"\";var hupso_title_t=\"WHAT%20DOES%20STIGMERGIC%20BEHAVIOUR%20MEANS%3F\";<\/script><script type=\"text\/javascript\" src=\"https:\/\/static.hupso.com\/share\/js\/share_toolbar.js\"><\/script><!-- Hupso Share Buttons --><\/div><p><strong>Stigmergy<\/strong> is a communication method used in decentralized systems in which individuals communicate with each other by changing the surrounding environment.<\/p>\n<p>The term was introduced by French biologist <a title=\"Pierre-Paul Grass\u00e9\" href=\"http:\/\/en.wikipedia.org\/wiki\/Pierre-Paul_Grass%C3%A9\" target=\"_blank\"><strong>Pierre-Paul Grass\u00e9<\/strong><\/a> in 1959 to refer to termite behavior.<\/p>\n<p>He defined it as:<\/p>\n<p><strong><em>\u201cStimulation of workers by the performance they have achieved.\u201d<\/em><\/strong><\/p>\n<div id=\"attachment_296\" style=\"width: 510px\" class=\"wp-caption alignnone\"><a href=\"http:\/\/www.swarm-intelligence.it\/wordpress\/wp-content\/uploads\/2014\/05\/termite.jpg\"><img aria-describedby=\"caption-attachment-296\" loading=\"lazy\" class=\"wp-image-296 size-full\" src=\"http:\/\/www.swarm-intelligence.it\/wordpress\/wp-content\/uploads\/2014\/05\/termite-e1402586574195.jpg\" alt=\"termite\" width=\"500\" height=\"409\" \/><\/a><p id=\"caption-attachment-296\" class=\"wp-caption-text\"><a href=\"https:\/\/www.flickr.com\/photos\/mmorgan8186\/3718480156\/in\/photolist-6EAbAQ-jfqbYJ-7sHPPn-8gik6P-niZq7m-6fNzpk-76QcXV-btZtzd-btZtxm-8eazk8-7Qgi32-7Np1Pn-5ws7HB-dPErqc-7tDyiT-ffGpNc-rTBhb-cJmf8f-iKSciH-ffWsoC-aERzmX-iKSbPM-iKU35h-8HFUWC-77ZBYN-6jvZS3-6mCbMW-4FbYNm-b1hycP-KB5Xy-6EAaxE-cTX9ZA-fj6rGG-6EvZ3V-iKTwEV-biQTAD-biQSZX-tU1B-7NsQTb-51Mi5m-2jaEgU-4WvZgz-ikotQQ-eaey19-ea97nZ-cc6P2m-FnikX-ea8T36-cAranq-eaeMSE\" target=\"_blank\">CC License by Mark Morgan<\/a><\/p><\/div>\n<p>Stigmergy was first observed in social insects and then applied at <strong>artificial intelligence system<\/strong>.<\/p>\n<p>Ants exchange information by laying down pheromones (<strong>the trace<\/strong>) on their way back to the nest when they have found food, in this way they collectively develop a complex network of trails, finding the shortest path to a food source and connecting the nest in the most efficient way. When ants come out of the nest searching for food, they are stimulated by the pheromone to follow the trail towards the food source. The network of trails functions as a shared external memory for the ant colony.<\/p>\n<p><iframe src=\"\/\/www.youtube.com\/embed\/gcHt5n3NGK0\" width=\"500\" height=281\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><\/iframe><\/p>\n<p>Other eusocial creatures, such as termites, use pheromones to build their complex nests by following a simple decentralized rule set. Each insect scoops up a \u2018mudball\u2019 or similar material from its environment, invests the ball with pheromones, and deposits it on the ground, initially in a random spot.<\/p>\n<div id=\"attachment_290\" style=\"width: 510px\" class=\"wp-caption alignnone\"><a href=\"http:\/\/www.swarm-intelligence.it\/wordpress\/wp-content\/uploads\/2014\/05\/mound.jpg\"><img aria-describedby=\"caption-attachment-290\" loading=\"lazy\" class=\"wp-image-290 size-full\" src=\"http:\/\/www.swarm-intelligence.it\/wordpress\/wp-content\/uploads\/2014\/05\/mound-e1402586102353.jpg\" alt=\"mound\" width=\"500\" height=\"282\" \/><\/a><p id=\"caption-attachment-290\" class=\"wp-caption-text\"><a href=\"https:\/\/www.flickr.com\/photos\/hazara\/9028960551\/in\/photolist-8Mh9K4-8Mh9XP-8MkdCE-6jvZS3-cFQVBJ-6mCbMW-eKRMpD-8MjK3b-8MgFtF-8MjK7s-8Mh9V4-8MkMyy-dkE1Kk-8Mh9GK-8MgFy6-8MkMVC-mJRFoV-mJTemE-mJT9bE-mJRDGi-mJTiJN-mJRGst-mJTjAY-mJRwmr-mJT8sL-mJRBs8-mJTdkm-mJTbSb-mJT9cw-mJRnU6-mJTgLu-mJT9fh-mJRsEP-mJTtCW-mJRBpF-mJRoPk-mJTaJ9-mJRuvR-mJTksN-mJREFa-mJRrAe-mJREza-mJTcbh-mJRuVt-mJRAzp-mJRxoV-mJRD3R-mJTcAW-mJTnrC-mJRqTF\" target=\"_blank\">CC License by Hadi Zaher<\/a><\/p><\/div>\n<p>However, termites are attracted to their nestmates\u2019 pheromones and are therefore more likely to drop their own mudballs on top of their neighbors\u2019. The larger the heap of mud becomes, the more attractive it is, and therefore the more mud will be added to it (positive feedback).<\/p>\n<p>Over time this leads to the construction of pillars, arches, tunnels and chambers.<\/p>\n<div style=\"padding-bottom:15px; padding-top:2px;\" class=\"hupso-share-buttons\"><!-- Hupso Share Buttons - https:\/\/www.hupso.com\/share\/ --><a class=\"hupso_toolbar\" href=\"https:\/\/www.hupso.com\/share\/\"><img src=\"https:\/\/static.hupso.com\/share\/buttons\/dot.png\" style=\"border:0px; padding-top: 5px; float:left;\" alt=\"Share Button\"\/><\/a><script type=\"text\/javascript\">var hupso_services_t=new Array(\"Twitter\",\"Facebook\",\"Linkedin\");var hupso_background_t=\"#84FF5E\";var hupso_border_t=\"#FFE959\";var hupso_toolbar_size_t=\"medium\";var hupso_image_folder_url = \"\";var hupso_twitter_via=\"SwarmStrength\";var hupso_url_t=\"\";var hupso_title_t=\"WHAT%20DOES%20STIGMERGIC%20BEHAVIOUR%20MEANS%3F\";<\/script><script type=\"text\/javascript\" src=\"https:\/\/static.hupso.com\/share\/js\/share_toolbar.js\"><\/script><!-- Hupso Share Buttons --><\/div>","protected":false},"excerpt":{"rendered":"<p>Stigmergy is a communication method used in decentralized systems in which individuals communicate with each other by changing the surrounding environment. The term was introduced by French biologist Pierre-Paul Grass\u00e9 in 1959 to refer to termite behavior. He defined it as: \u201cStimulation of workers by the performance they have achieved.\u201d Stigmergy was first observed in [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"open","ping_status":"closed","template":"","meta":[],"_links":{"self":[{"href":"https:\/\/www.swarm-intelligence.it\/wordpress\/wp-json\/wp\/v2\/pages\/91"}],"collection":[{"href":"https:\/\/www.swarm-intelligence.it\/wordpress\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.swarm-intelligence.it\/wordpress\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.swarm-intelligence.it\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.swarm-intelligence.it\/wordpress\/wp-json\/wp\/v2\/comments?post=91"}],"version-history":[{"count":28,"href":"https:\/\/www.swarm-intelligence.it\/wordpress\/wp-json\/wp\/v2\/pages\/91\/revisions"}],"predecessor-version":[{"id":392,"href":"https:\/\/www.swarm-intelligence.it\/wordpress\/wp-json\/wp\/v2\/pages\/91\/revisions\/392"}],"wp:attachment":[{"href":"https:\/\/www.swarm-intelligence.it\/wordpress\/wp-json\/wp\/v2\/media?parent=91"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}