{"id":3258,"date":"2016-06-01T13:45:01","date_gmt":"2016-06-01T12:45:01","guid":{"rendered":"https:\/\/abcdr.guyader.pro\/?p=3258"},"modified":"2018-04-08T00:02:32","modified_gmt":"2018-04-07T23:02:32","slug":"comment-fixer-et-reproduire-laleatoire-set-seed","status":"publish","type":"post","link":"https:\/\/thinkr.fr\/abcdr\/comment-fixer-et-reproduire-laleatoire-set-seed\/","title":{"rendered":"Comment fixer et reproduire l&#039;al\u00e9atoire ? set.seed()"},"content":{"rendered":"<p>Afin d&rsquo;utiliser des processus al\u00e9atoires mais de faire en sorte qu&rsquo;ils soient reproductibles dans le temps ou sur une autre machine\/syst\u00e8me<\/p>\n<pre><code>set.seed()<\/code><\/pre>\n<p>est une fonction qui permet de fixer les r\u00e9sultats qui seront fournis par le RNG (random number generator). <\/p>\n<pre><code><br \/>sample(letters[4:9]) <br \/>[1] \"d\" \"g\" \"f\" \"h\" \"i\" \"e\" <br \/>sample(letters[4:9]) <br \/>[1] \"e\" \"i\" \"g\" \"f\" \"h\" \"d\" <br \/>sample(letters[4:9]) <br \/>[1] \"f\" \"d\" \"e\" \"h\" \"i\" \"g\"<br \/><br \/>set.seed(123)<br \/>sample(letters[4:9]) <br \/>[1] \"e\" \"g\" \"i\" \"f\" \"h\" \"d\" <br \/>set.seed(123) <br \/>sample(letters[4:9]) <br \/>[1] \"e\" \"g\" \"i\" \"f\" \"h\" \"d\"<br \/><br \/><\/code><\/pre>\n<p>Comment choisir le chiffre \u00e0 mettre dans la fonction set.seed ? Au hasard ! \ud83d\ude09<\/p>\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Afin d&rsquo;utiliser des processus al\u00e9atoires mais de faire en sorte qu&rsquo;ils soient reproductibles dans le temps ou sur une autre machine\/syst\u00e8me set.seed() est une fonction qui permet de fixer les r\u00e9sultats qui seront fournis par le RNG (random number generator). sample(letters[4:9]) [1] \u00ab\u00a0d\u00a0\u00bb \u00ab\u00a0g\u00a0\u00bb \u00ab\u00a0f\u00a0\u00bb \u00ab\u00a0h\u00a0\u00bb \u00ab\u00a0i\u00a0\u00bb \u00ab\u00a0e\u00a0\u00bb sample(letters[4:9]) [1] \u00ab\u00a0e\u00a0\u00bb \u00ab\u00a0i\u00a0\u00bb \u00ab\u00a0g\u00a0\u00bb \u00ab\u00a0f\u00a0\u00bb \u00ab\u00a0h\u00a0\u00bb \u00ab\u00a0d\u00a0\u00bb sample(letters[4:9]) [1] \u00ab\u00a0f\u00a0\u00bb \u00ab\u00a0d\u00a0\u00bb \u00ab\u00a0e\u00a0\u00bb \u00ab\u00a0h\u00a0\u00bb \u00ab\u00a0i\u00a0\u00bb \u00ab\u00a0g\u00a0\u00bbset.seed(123)sample(letters[4:9]) [1] \u00ab\u00a0e\u00a0\u00bb \u00ab\u00a0g\u00a0\u00bb \u00ab\u00a0i\u00a0\u00bb \u00ab\u00a0f\u00a0\u00bb \u00ab\u00a0h\u00a0\u00bb \u00ab\u00a0d\u00a0\u00bb set.seed(123) sample(letters[4:9]) [1] \u00ab\u00a0e\u00a0\u00bb \u00ab\u00a0g\u00a0\u00bb \u00ab\u00a0i\u00a0\u00bb \u00ab\u00a0f\u00a0\u00bb \u00ab\u00a0h\u00a0\u00bb \u00ab\u00a0d\u00a0\u00bb Comment choisir le chiffre \u00e0 mettre dans la fonction set.seed ? Au hasard ! \ud83d\ude09<a class=\"more-link\" href=\"https:\/\/thinkr.fr\/abcdr\/comment-fixer-et-reproduire-laleatoire-set-seed\/\">Read More &rarr;<\/a><\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"content-type":"","rop_custom_images_group":[],"rop_custom_messages_group":[],"rop_publish_now":"initial","rop_publish_now_accounts":{"twitter_399453572_399453572":""},"rop_publish_now_history":[],"rop_publish_now_status":"pending","jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[2],"tags":[],"class_list":{"0":"entry","1":"post","2":"publish","3":"author-diane","4":"post-3258","6":"format-standard","7":"category-algorithmique"},"acf":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/p9O7Sx-Qy","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/thinkr.fr\/abcdr\/wp-json\/wp\/v2\/posts\/3258","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/thinkr.fr\/abcdr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/thinkr.fr\/abcdr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/thinkr.fr\/abcdr\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/thinkr.fr\/abcdr\/wp-json\/wp\/v2\/comments?post=3258"}],"version-history":[{"count":2,"href":"https:\/\/thinkr.fr\/abcdr\/wp-json\/wp\/v2\/posts\/3258\/revisions"}],"predecessor-version":[{"id":4308,"href":"https:\/\/thinkr.fr\/abcdr\/wp-json\/wp\/v2\/posts\/3258\/revisions\/4308"}],"wp:attachment":[{"href":"https:\/\/thinkr.fr\/abcdr\/wp-json\/wp\/v2\/media?parent=3258"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/thinkr.fr\/abcdr\/wp-json\/wp\/v2\/categories?post=3258"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/thinkr.fr\/abcdr\/wp-json\/wp\/v2\/tags?post=3258"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}