{"id":19740,"date":"2022-09-07T12:25:00","date_gmt":"2022-09-07T15:25:00","guid":{"rendered":"https:\/\/mindthegraph.com\/blog\/?p=16586"},"modified":"2022-10-18T08:39:17","modified_gmt":"2022-10-18T11:39:17","slug":"sigmoid-pattern","status":"publish","type":"post","link":"https:\/\/mindthegraph.com\/blog\/pl\/sigmoid-pattern\/","title":{"rendered":"Co to jest wz\u00f3r sigmoidalny i 3 etapy krzywej?"},"content":{"rendered":"<p>Niezb\u0119dne jest zrozumienie znaczenia wzoru lub funkcji sigmoidalnej, niezale\u017cnie od tego, czy budujesz w\u0142asn\u0105 sie\u0107 neuronow\u0105, czy konstruujesz model wzrostu dro\u017cd\u017cy. Uczenie si\u0119 z\u0142o\u017conych problem\u00f3w mo\u017cna wyja\u015bni\u0107 za pomoc\u0105 funkcji sigmoidalnej i krzywych wzrostu.&nbsp;<\/p>\n\n\n\n<p>Sucha masa jest bardziej sp\u00f3jnym wska\u017anikiem wzrostu podczas pomiaru wzrostu. Nasze pomiary wzrostu opieraj\u0105 si\u0119 zazwyczaj na tym, ile zyskujemy na wzro\u015bcie lub wadze, poniewa\u017c nie mo\u017cna po prostu odparowa\u0107 organizmu.&nbsp;<\/p>\n\n\n\n<p>W rezultacie funkcje sigmoidalne umo\u017cliwiaj\u0105 numeryczn\u0105 estymacj\u0119 parametr\u00f3w, poniewa\u017c s\u0105 one r\u00f3\u017cniczkowalne. Na tym blogu przyjrzymy si\u0119, czym jest wz\u00f3r lub funkcja sigmoidalna.&nbsp;<\/p>\n\n\n\n<h2><strong><strong><strong><strong><strong>Co to jest wz\u00f3r sigmoidalny?<\/strong><\/strong><\/strong><\/strong><\/strong><\/h2>\n\n\n\n<p>Nale\u017cy zauwa\u017cy\u0107, \u017ce wiele organizm\u00f3w przechodzi kilka charakterystycznych faz wzrostu w ci\u0105gu swojego \u017cycia. Mierzalna zmienna rozmiaru lub wagi w czasie mo\u017ce by\u0107 wykorzystana do ilo\u015bciowego okre\u015blenia takich wzorc\u00f3w.&nbsp;<\/p>\n\n\n\n<p>Wz\u00f3r sigmoidalny jest powszechnie obserwowany w warunkach, kt\u00f3re s\u0105 og\u00f3lnie sp\u00f3jne i gdzie zmienna kolejno ro\u015bnie wyk\u0142adniczo, nast\u0119pnie liniowo, a na ko\u0144cu asymptotycznie. Na wykresie mo\u017cna zobaczy\u0107 krzyw\u0105 w kszta\u0142cie litery S lub funkcj\u0119 sigmoidaln\u0105.&nbsp;<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><a href=\"https:\/\/mindthegraph.com\/blog\/wp-content\/uploads\/2022\/08\/population-growth-curve_med.jpeg\"><img decoding=\"async\" src=\"https:\/\/mindthegraph.com\/blog\/wp-content\/uploads\/2022\/08\/population-growth-curve_med.jpeg\" alt=\"\" class=\"wp-image-16591\"\/><\/a><\/figure><\/div>\n\n\n<p>Rozk\u0142ad normalny jest zawarty w krzywych sigmoidalnych wraz z wieloma innymi funkcjami rozk\u0142adu skumulowanego. Sie\u0107 neuronowa wykorzystuje je r\u00f3wnie\u017c jako funkcj\u0119 aktywacji.<\/p>\n\n\n\n<h2><strong><strong>Jakie jest znaczenie wzoru sigmoidalnego?<\/strong><\/strong><\/h2>\n\n\n\n<p>Ze wzgl\u0119du na monotoniczno\u015b\u0107, ci\u0105g\u0142o\u015b\u0107 i r\u00f3\u017cniczkowalno\u015b\u0107 funkcji sigmoidalnej, wraz z jej pochodn\u0105, \u0142atwo jest sformu\u0142owa\u0107 i zaktualizowa\u0107 r\u00f3wnania uczenia si\u0119 r\u00f3\u017cnych parametr\u00f3w.&nbsp;<\/p>\n\n\n\n<p>Mo\u017cliwa trajektoria wzrostu jest reprezentowana przez krzyw\u0105 s przy wykre\u015blaniu wielko\u015bci populacji w czasie. Aby zrozumie\u0107 cykl \u017cycia organizmu, musimy wzi\u0105\u0107 pod uwag\u0119 ten aspekt.&nbsp;<\/p>\n\n\n\n<p>Dodatkowo, funkcje sigmoidalne mog\u0105 by\u0107 wykorzystywane w sieciach neuronowych do modelowania z\u0142o\u017conych funkcji decyzyjnych, poniewa\u017c funkcje nieliniowe skutkuj\u0105 nieliniowymi ograniczeniami.<\/p>\n\n\n\n<h2><strong><strong>Wz\u00f3r sigmoidalny sk\u0142ada si\u0119 z trzech etap\u00f3w<\/strong><\/strong><\/h2>\n\n\n\n<p>B\u0119d\u0105 trzy podstawowe fazy krzywej, etap\/okres przyspieszenia, etap\/okres przej\u015bciowy i etap\/okres plateau.<\/p>\n\n\n\n<h3><strong><strong>Etap wyk\u0142adniczy<\/strong><\/strong><\/h3>\n\n\n\n<p>Na wczesnych etapach wzrost populacji by\u0142by stosunkowo powolny (okres op\u00f3\u017anienia), poniewa\u017c niewiele osobnik\u00f3w reprodukcyjnych by\u0142oby szeroko rozproszonych.&nbsp;<\/p>\n\n\n\n<p>Poniewa\u017c przyrost naturalny przewy\u017csza \u015bmiertelno\u015b\u0107, wielko\u015b\u0107 populacji stale ro\u015bnie. Energii jest pod dostatkiem, a odporno\u015b\u0107 na klimat jest minimalna, co skutkuje niskimi wska\u017anikami \u015bmiertelno\u015bci.<\/p>\n\n\n\n<h3><strong><strong>Etap przej\u015bciowy<\/strong><\/strong><\/h3>\n\n\n\n<p>Ze wzgl\u0119du na wzrost populacji, zasoby staj\u0105 si\u0119 coraz rzadsze, powoduj\u0105c walk\u0119 o przetrwanie. Nast\u0119puje spowolnienie wzrostu populacji w wyniku spadku wska\u017anika urodze\u0144 i wzrostu wska\u017anika zgon\u00f3w.<\/p>\n\n\n\n<h3><strong><strong>Etap p\u0142askowy\u017cu<\/strong><\/strong><\/h3>\n\n\n\n<p>W ko\u0144cu rosn\u0105ca \u015bmiertelno\u015b\u0107 zr\u00f3wna si\u0119 z produkcj\u0105 nowych organizm\u00f3w, wi\u0119c wzrost populacji osi\u0105gnie plateau.&nbsp;<\/p>\n\n\n\n<p>W wyniku dzia\u0142ania si\u0142 ograniczaj\u0105cych populacja przeros\u0142a zdolno\u015b\u0107 \u015brodowiska do radzenia sobie ze wzrostem. Jest prawdopodobne, \u017ce w tym momencie wielko\u015b\u0107 populacji nie b\u0119dzie sta\u0142a, ale b\u0119dzie waha\u0107 si\u0119 wok\u00f3\u0142 zdolno\u015bci do utrzymania r\u00f3wnej liczby osobnik\u00f3w.<\/p>\n\n\n\n<h2><strong><strong><strong><strong>Ekskluzywne tre\u015bci naukowe tworzone przez naukowc\u00f3w&nbsp;<\/strong><\/strong><\/strong><\/strong><\/h2>\n\n\n\n<p>Jak idzie praca nad artyku\u0142em? Czy szuka\u0142e\u015b ilustracji odpowiadaj\u0105cych Twoim badaniom? Mamy dla ciebie wsparcie w postaci Mind the Graph.&nbsp;<\/p>\n\n\n\n<p>Z biblioteki wype\u0142nionej tysi\u0105cami ilustracji mo\u017cesz wybiera\u0107 spo\u015br\u00f3d r\u00f3\u017cnych kategorii. Dzi\u0119ki naszemu w\u0142asnemu kreatorowi plakat\u00f3w mo\u017cesz b\u0142yskawicznie stworzy\u0107 fantastyczny plakat.&nbsp;<\/p>\n\n\n\n<p>Ponadto nasi eksperci mog\u0105 r\u00f3wnie\u017c dostosowa\u0107 ilustracje zgodnie ze specyfikacjami klienta.<\/p>\n\n\n\n<div class=\"is-layout-flex wp-block-buttons\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link has-background\" href=\"https:\/\/mindthegraph.com\/science_figures\" style=\"border-radius:50px;background-color:#dc1866\" target=\"_blank\" rel=\"noreferrer noopener\">Tworzenie efektywnych figur naukowych w kilka minut<\/a><\/div>\n<\/div>\n\n\n\n<div style=\"height:11px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"Infografika dotycz\u0105ca synaps neuronalnych\" width=\"800\" height=\"450\" src=\"https:\/\/www.youtube.com\/embed\/2DwIBRzuH5A?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<div style=\"height:25px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p><\/p>","protected":false},"excerpt":{"rendered":"<p>W tym artykule przyjrzyjmy si\u0119, czym jest wz\u00f3r lub funkcja sigmoidalna i jakie s\u0105 jej r\u00f3\u017cne etapy. <\/p>","protected":false},"author":27,"featured_media":19783,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[38],"tags":[554,775,777,909,962],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v19.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>What is a Sigmoid Pattern and The 3 Stages Of The Curve?<\/title>\n<meta name=\"description\" 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She is currently pursuing a master's degree in Bioentrepreneurship from Karolinska Institute. She is interested in health and diseases, global health, socioeconomic development, and women's health. As a science enthusiast, she is keen in learning more about the scientific world and wants to play a part in making a difference.","sameAs":["http:\/\/linkedin.com\/in\/aayushizaveri"],"url":"https:\/\/mindthegraph.com\/blog\/pl\/author\/aayuyshi\/"}]}},"_links":{"self":[{"href":"https:\/\/mindthegraph.com\/blog\/pl\/wp-json\/wp\/v2\/posts\/19740"}],"collection":[{"href":"https:\/\/mindthegraph.com\/blog\/pl\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mindthegraph.com\/blog\/pl\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mindthegraph.com\/blog\/pl\/wp-json\/wp\/v2\/users\/27"}],"replies":[{"embeddable":true,"href":"https:\/\/mindthegraph.com\/blog\/pl\/wp-json\/wp\/v2\/comments?post=19740"}],"version-history":[{"count":1,"href":"https:\/\/mindthegraph.com\/blog\/pl\/wp-json\/wp\/v2\/posts\/19740\/revisions"}],"predecessor-version":[{"id":19784,"href":"https:\/\/mindthegraph.com\/blog\/pl\/wp-json\/wp\/v2\/posts\/19740\/revisions\/19784"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/mindthegraph.com\/blog\/pl\/wp-json\/wp\/v2\/media\/19783"}],"wp:attachment":[{"href":"https:\/\/mindthegraph.com\/blog\/pl\/wp-json\/wp\/v2\/media?parent=19740"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mindthegraph.com\/blog\/pl\/wp-json\/wp\/v2\/categories?post=19740"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mindthegraph.com\/blog\/pl\/wp-json\/wp\/v2\/tags?post=19740"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}