{"id":2254,"date":"2025-04-18T10:33:27","date_gmt":"2025-04-18T07:33:27","guid":{"rendered":"http:\/\/csnotes.ru\/?p=2254"},"modified":"2025-04-18T10:34:04","modified_gmt":"2025-04-18T07:34:04","slug":"%d0%b2%d1%80%d0%b5%d0%bc%d0%b5%d0%bd%d0%bd%d0%b0%d1%8f-%d1%81%d0%bb%d0%be%d0%b6%d0%bd%d0%be%d1%81%d1%82%d1%8c-%d0%b0%d0%bb%d0%b3%d0%be%d1%80%d0%b8%d1%82%d0%bc%d0%be%d0%b2-ml-%d0%b2-%d0%be-%d0%bd%d0%be","status":"publish","type":"post","link":"https:\/\/csnotes.ru\/?p=2254","title":{"rendered":"\u0412\u0440\u0435\u043c\u0435\u043d\u043d\u0430\u044f \u0441\u043b\u043e\u0436\u043d\u043e\u0441\u0442\u044c \u0430\u043b\u0433\u043e\u0440\u0438\u0442\u043c\u043e\u0432 ML \u0432 \u041e-\u043d\u043e\u0442\u0430\u0446\u0438\u0438"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">\u041e-\u043d\u043e\u0442\u0430\u0446\u0438\u044f \u044d\u0442\u043e \u043a\u043b\u0430\u0441\u0441\u0438\u0447\u0435\u0441\u043a\u0438\u0439 \u0441\u043f\u043e\u0441\u043e\u0431 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\u0434\u0435\u0440\u0435\u0432\u0430 \u0440\u0435\u0448\u0435\u043d\u0438\u0439<\/strong> (\u043d\u0430\u043f\u0440\u0438\u043c\u0435\u0440, <code>DecisionTreeClassifier<\/code> \u0438\u0437 <code>scikit-learn<\/code>) \u0432 \u0442\u0435\u0440\u043c\u0438\u043d\u0430\u0445 <strong>O-\u0431\u043e\u043b\u044c\u0448\u043e\u0435<\/strong> \u0437\u0430\u0432\u0438\u0441\u0438\u0442 \u043e\u0442 \u043d\u0435\u0441\u043a\u043e\u043b\u044c\u043a\u0438\u0445 \u0444\u0430\u043a\u0442\u043e\u0440\u043e\u0432.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u041e\u0431\u043e\u0437\u043d\u0430\u0447\u0435\u043d\u0438\u044f:<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>N \u2014 \u043a\u043e\u043b\u0438\u0447\u0435\u0441\u0442\u0432\u043e \u043e\u0431\u044a\u0435\u043a\u0442\u043e\u0432 (\u0441\u0442\u0440\u043e\u043a) \u0432 \u0432\u044b\u0431\u043e\u0440\u043a\u0435<\/li>\n\n\n\n<li>M \u2014 \u043a\u043e\u043b\u0438\u0447\u0435\u0441\u0442\u0432\u043e \u043f\u0440\u0438\u0437\u043d\u0430\u043a\u043e\u0432<\/li>\n\n\n\n<li>D \u2014 \u043c\u0430\u043a\u0441\u0438\u043c\u0430\u043b\u044c\u043d\u0430\u044f \u0433\u043b\u0443\u0431\u0438\u043d\u0430 \u0434\u0435\u0440\u0435\u0432\u0430<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u0412\u0440\u0435\u043c\u0435\u043d\u043d\u0430\u044f \u0441\u043b\u043e\u0436\u043d\u043e\u0441\u0442\u044c \u043f\u043e\u0441\u0442\u0440\u043e\u0435\u043d\u0438\u044f \u043e\u0434\u043d\u043e\u0433\u043e \u0434\u0435\u0440\u0435\u0432\u0430:<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u0412 <strong>\u043d\u0430\u0438\u0445\u0443\u0434\u0448\u0435\u043c \u0441\u043b\u0443\u0447\u0430\u0435<\/strong> \u2014 \u043a\u043e\u0433\u0434\u0430 \u0434\u0435\u0440\u0435\u0432\u043e \u043f\u043e\u043b\u043d\u043e\u0441\u0442\u044c\u044e \u0440\u0430\u0437\u0432\u0435\u0442\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u0434\u043e \u043b\u0438\u0441\u0442\u044c\u0435\u0432 (\u0434\u043e \u0443\u0440\u043e\u0432\u043d\u044f, \u0433\u0434\u0435 \u043a\u0430\u0436\u0434\u044b\u0439 \u043e\u0431\u044a\u0435\u043a\u0442 \u043e\u043a\u0430\u0437\u044b\u0432\u0430\u0435\u0442\u0441\u044f \u0432 \u043e\u0442\u0434\u0435\u043b\u044c\u043d\u043e\u043c \u0443\u0437\u043b\u0435): <\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"><strong>O(M\u22c5Nlog\u2061N)<\/strong><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u041f\u043e\u044f\u0441\u043d\u0435\u043d\u0438\u0435 \u043f\u043e \u0448\u0430\u0433\u0430\u043c:<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u041d\u0430 \u043a\u0430\u0436\u0434\u043e\u043c \u0443\u0437\u043b\u0435:<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u041d\u0443\u0436\u043d\u043e \u0432\u044b\u0431\u0440\u0430\u0442\u044c \u043d\u0430\u0438\u043b\u0443\u0447\u0448\u0438\u0439 \u043f\u0440\u0438\u0437\u043d\u0430\u043a \u0438 \u043f\u043e\u0440\u043e\u0433 \u0440\u0430\u0437\u0431\u0438\u0435\u043d\u0438\u044f.<\/li>\n\n\n\n<li>\u0414\u043b\u044f \u043e\u0434\u043d\u043e\u0433\u043e \u043f\u0440\u0438\u0437\u043d\u0430\u043a\u0430 \u2014 \u044d\u0442\u043e O(Nlog\u2061N), \u0435\u0441\u043b\u0438 \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u044f \u043f\u0440\u0438\u0437\u043d\u0430\u043a\u0430 \u0441\u043e\u0440\u0442\u0438\u0440\u0443\u044e\u0442\u0441\u044f.<\/li>\n\n\n\n<li>\u0414\u043b\u044f M \u043f\u0440\u0438\u0437\u043d\u0430\u043a\u043e\u0432 \u2014 O(M\u22c5Nlog\u2061N).<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u0421\u043a\u043e\u043b\u044c\u043a\u043e \u0442\u0430\u043a\u0438\u0445 \u0443\u0437\u043b\u043e\u0432 \u0431\u0443\u0434\u0435\u0442?<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u041f\u0440\u0438 \u0441\u0431\u0430\u043b\u0430\u043d\u0441\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u043e\u043c \u0434\u0435\u0440\u0435\u0432\u0435 \u0433\u043b\u0443\u0431\u0438\u043d\u043e\u0439 D, \u043a\u043e\u043b\u0438\u0447\u0435\u0441\u0442\u0432\u043e \u0443\u0437\u043b\u043e\u0432 \u2014 O(2^D), \u043d\u043e \u0441\u0443\u043c\u043c\u0430\u0440\u043d\u043e\u0435 \u043a\u043e\u043b\u0438\u0447\u0435\u0441\u0442\u0432\u043e \u043f\u0440\u043e\u0432\u0435\u0440\u043e\u043a \u043f\u043e \u0432\u0441\u0435\u043c \u0443\u0440\u043e\u0432\u043d\u044f\u043c \u043e\u0446\u0435\u043d\u0438\u0432\u0430\u0435\u0442\u0441\u044f \u0432 O(N), \u043f\u043e\u0442\u043e\u043c\u0443 \u0447\u0442\u043e \u043a\u0430\u0436\u0434\u044b\u0439 \u043e\u0431\u044a\u0435\u043a\u0442 \u043f\u0440\u043e\u0445\u043e\u0434\u0438\u0442 \u043f\u043e \u043e\u0434\u043d\u043e\u043c\u0443 \u043f\u0443\u0442\u0438 \u043e\u0442 \u043a\u043e\u0440\u043d\u044f \u0434\u043e \u043b\u0438\u0441\u0442\u0430.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\">\u0418\u0442\u043e\u0433\u043e:<\/h3>\n\n\n\n<pre class=\"wp-block-preformatted\"><strong>O(M\u22c5Nlog\u2061N)<\/strong><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u041e-\u043d\u043e\u0442\u0430\u0446\u0438\u044f \u044d\u0442\u043e \u043a\u043b\u0430\u0441\u0441\u0438\u0447\u0435\u0441\u043a\u0438\u0439 \u0441\u043f\u043e\u0441\u043e\u0431 \u043e\u0446\u0435\u043d\u043a\u0438 \u0432\u0440\u0435\u043c\u0435\u043d\u043d\u043e\u0439 \u0441\u043b\u043e\u0436\u043d\u043e\u0441\u0442\u0438 \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u0430\u043b\u0433\u043e\u0440\u0438\u0442\u043c\u043e\u0432. \u0412 \u0441\u0443\u0449\u043d\u043e\u0441\u0442\u0438 \u044d\u0442\u043e \u043f\u043e\u043a\u0430\u0437\u0430\u0442\u0435\u043b\u044c \u0432\u0440\u0435\u043c\u0435\u043d\u0438 \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u0430\u043b\u0433\u043e\u0440\u0438\u0442\u043c\u0430 \u0432 \u0441\u0430\u043c\u043e\u043c \u0445\u0443\u0434\u0448\u0435\u043c \u0438 \u043d\u0435\u043e\u043f\u0442\u0438\u043c\u0430\u043b\u044c\u043d\u043e\u043c \u0441\u043b\u0443\u0447\u0430\u0435 \u0435\u0433\u043e \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u044f. \u0414\u0435\u0440\u0435\u0432\u043e \u0440\u0435\u0448\u0435\u043d\u0438\u0439 \u041a\u0430\u043a\u043e\u0432\u0430 \u0431\u0443\u0434\u0435\u0442 \u0441\u043b\u043e\u0436\u043d\u043e\u0441\u0442\u044c \u043f\u043e\u0441\u0442\u0440\u043e\u0435\u043d\u0438\u044f \u0434\u0435\u0440\u0435\u0432\u0430 \u0432 \u043d\u043e\u0442\u0430\u0446\u0438\u0438 \u041e \u0431\u043e\u043b\u044c\u0448\u043e\u0435, \u0435\u0441\u043b\u0438 \u0440\u0430\u0437\u043c\u0435\u0440 \u0432\u044b\u0431\u043e\u0440\u043a\u0438 \u0440\u0430\u0432\u0435\u043d N, \u0430 \u043a\u043e\u043b\u0438\u0447\u0435\u0441\u0442\u0432\u043e \u043f\u0440\u0438\u0437\u043d\u0430\u043a\u043e\u0432 \u0440\u0430\u0432\u043d\u043e M? \u041e\u0446\u0435\u043d\u043a\u0430 \u0432\u0440\u0435\u043c\u0435\u043d\u043d\u043e\u0439 \u0441\u043b\u043e\u0436\u043d\u043e\u0441\u0442\u0438 \u043f\u043e\u0441\u0442\u0440\u043e\u0435\u043d\u0438\u044f \u0434\u0435\u0440\u0435\u0432\u0430 \u0440\u0435\u0448\u0435\u043d\u0438\u0439 (\u043d\u0430\u043f\u0440\u0438\u043c\u0435\u0440, DecisionTreeClassifier \u0438\u0437 scikit-learn) [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2,21],"tags":[73,74],"class_list":["post-2254","post","type-post","status-publish","format-standard","hentry","category-ml","category-algorithms","tag-o-notation","tag-74"],"views":91,"_links":{"self":[{"href":"https:\/\/csnotes.ru\/index.php?rest_route=\/wp\/v2\/posts\/2254","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/csnotes.ru\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/csnotes.ru\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/csnotes.ru\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/csnotes.ru\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2254"}],"version-history":[{"count":2,"href":"https:\/\/csnotes.ru\/index.php?rest_route=\/wp\/v2\/posts\/2254\/revisions"}],"predecessor-version":[{"id":2258,"href":"https:\/\/csnotes.ru\/index.php?rest_route=\/wp\/v2\/posts\/2254\/revisions\/2258"}],"wp:attachment":[{"href":"https:\/\/csnotes.ru\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2254"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/csnotes.ru\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2254"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/csnotes.ru\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2254"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}