{"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\/lt\/sigmoidinis-modelis\/","title":{"rendered":"Kas yra Sigmoidinis modelis ir 3 kreiv\u0117s etapai?"},"content":{"rendered":"<p>Svarbu suvokti sigmos modelio ar funkcijos reik\u0161m\u0119, nepriklausomai nuo to, ar kuriate savo neuronin\u012f tinkl\u0105, ar konstruojate mieli\u0173 augimo model\u012f. Sud\u0117ting\u0173 problem\u0173 mokym\u0105si paai\u0161kina sigmos funkcija ir augimo kreiv\u0117s.&nbsp;<\/p>\n\n\n\n<p>Sausoji mas\u0117 yra nuoseklesnis augimo rodiklis matuojant augim\u0105. M\u016bs\u0173 augimo matavimai paprastai grind\u017eiami tuo, kiek priaugome \u016bgio ar svorio, nes negalima tiesiog i\u0161garinti organizmo.&nbsp;<\/p>\n\n\n\n<p>Tod\u0117l sigmoidin\u0117s funkcijos leid\u017eia atlikti skaitin\u012f parametr\u0173 \u012fvertinim\u0105, nes jos yra diferencijuojamos. \u0160iame tinklara\u0161tyje ap\u017evelgsime, kas yra sigmoidinis modelis arba funkcija.&nbsp;<\/p>\n\n\n\n<h2><strong><strong><strong><strong><strong>Kas yra sigmos modelis?<\/strong><\/strong><\/strong><\/strong><\/strong><\/h2>\n\n\n\n<p>Svarbu pa\u017eym\u0117ti, kad daugelis organizm\u0173 per savo gyvenim\u0105 patiria kelet\u0105 skirting\u0173 augimo etap\u0173. Tokiems d\u0117sningumams kiekybi\u0161kai \u012fvertinti galima naudoti i\u0161matuojam\u0105 dyd\u017eio ar svorio kintam\u0105j\u012f per tam tikr\u0105 laik\u0105.&nbsp;<\/p>\n\n\n\n<p>Sigmoidinis modelis da\u017eniausiai pastebimas, kai s\u0105lygos yra i\u0161 esm\u0117s nuoseklios ir kai kintamasis nuosekliai did\u0117ja eksponenti\u0161kai, paskui tiesi\u0161kai ir galiausiai asimptoti\u0161kai. Nubr\u0117\u017eus grafik\u0105 galima matyti S formos kreiv\u0119 arba sigmos funkcij\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>Normalusis pasiskirstymas yra \u012ftrauktas \u012f sigmoidines kreives kartu su daugeliu kit\u0173 kumuliatyvinio pasiskirstymo funkcij\u0173. Juos kaip aktyvavimo funkcij\u0105 naudoja ir neuroninis tinklas.<\/p>\n\n\n\n<h2><strong><strong>Koki\u0105 reik\u0161m\u0119 turi sigmos modelis?<\/strong><\/strong><\/h2>\n\n\n\n<p>D\u0117l sigmoidin\u0117s funkcijos monotoni\u0161kumo, tolydumo ir diferencijavimo bei jos i\u0161vestin\u0117s nesunku suformuluoti ir atnaujinti skirting\u0173 parametr\u0173 mokymosi lygtis.&nbsp;<\/p>\n\n\n\n<p>Galim\u0105 augimo trajektorij\u0105 vaizduoja s formos kreiv\u0117, kai populiacijos dydis vaizduojamas priklausomai nuo laiko. Nor\u0117dami suprasti organizmo gyvenimo cikl\u0105, turime atsi\u017evelgti \u012f \u0161\u012f aspekt\u0105.&nbsp;<\/p>\n\n\n\n<p>Be to, sigmoidin\u0117s funkcijos gali b\u016bti naudojamos neuroniniuose tinkluose sud\u0117tingoms sprendim\u0173 funkcijoms modeliuoti, nes netiesin\u0117s funkcijos lemia netiesines ribas.<\/p>\n\n\n\n<h2><strong><strong>Sigmoidin\u012f model\u012f sudaro trys etapai<\/strong><\/strong><\/h2>\n\n\n\n<p>Bus trys pagrindiniai kreiv\u0117s etapai: spart\u0117jimo etapas (laikotarpis), pereinamasis etapas (laikotarpis) ir platumos etapas (laikotarpis).<\/p>\n\n\n\n<h3><strong><strong>Eksponentinis etapas<\/strong><\/strong><\/h3>\n\n\n\n<p>Ankstyvaisiais etapais populiacijos augimas b\u016bt\u0173 palyginti l\u0117tas (v\u0117lavimo laikotarpis), nes nedaug reprodukcini\u0173 individ\u0173 b\u016bt\u0173 pla\u010diai pasklid\u0119.&nbsp;<\/p>\n\n\n\n<p>Kadangi gimstamumas vir\u0161ija mirtingum\u0105, populiacijos dydis nuolat auga. Energijos yra daug, o atsparumas klimatui - minimalus, tod\u0117l mirtingumo rodikliai prasti.<\/p>\n\n\n\n<h3><strong><strong>Pereinamasis etapas<\/strong><\/strong><\/h3>\n\n\n\n<p>Augant gyventoj\u0173 skai\u010diui, ma\u017e\u0117ja i\u0161tekli\u0173, tod\u0117l kyla kova d\u0117l i\u0161likimo. D\u0117l ma\u017e\u0117jan\u010dio gimstamumo ir did\u0117jan\u010dio mirtingumo sul\u0117t\u0117ja gyventoj\u0173 skai\u010diaus augimas.<\/p>\n\n\n\n<h3><strong><strong>Plateau etapas<\/strong><\/strong><\/h3>\n\n\n\n<p>Galiausiai did\u0117jantis mirtingumas bus lygus nauj\u0173 organizm\u0173 gamybai, tod\u0117l populiacijos augimas pasieks plok\u0161\u010di\u0105j\u0105 rib\u0105.&nbsp;<\/p>\n\n\n\n<p>D\u0117l ribojan\u010di\u0173 j\u0117g\u0173 gyventoj\u0173 skai\u010dius vir\u0161ijo aplinkos geb\u0117jim\u0105 susidoroti su jo did\u0117jimu. Tik\u0117tina, kad \u0161iuo metu populiacijos dydis nebus pastovus, o svyruos apie leistin\u0105 dyd\u012f, kad b\u016bt\u0173 i\u0161laikytas tolygus skai\u010dius.<\/p>\n\n\n\n<h2><strong><strong><strong><strong>Mokslinink\u0173 sukurtas i\u0161skirtinis mokslinis turinys&nbsp;<\/strong><\/strong><\/strong><\/strong><\/h2>\n\n\n\n<p>Kaip sekasi rengti dokument\u0105? Ar ie\u0161kojote iliustracij\u0173, atitinkan\u010di\u0173 j\u016bs\u0173 tyrim\u0105? Mes jums padedame su Mind the Graph.&nbsp;<\/p>\n\n\n\n<p>I\u0161 t\u016bkstan\u010di\u0173 iliustracij\u0173 bibliotekos galite rinktis i\u0161 \u012fvairi\u0173 kategorij\u0173. Naudodamiesi m\u016bs\u0173 plakato k\u016br\u0117ju, fantasti\u0161k\u0105 plakat\u0105 gal\u0117site sukurti akimirksniu.&nbsp;<\/p>\n\n\n\n<p>Be to, m\u016bs\u0173 ekspertai gali pritaikyti iliustracijas pagal j\u016bs\u0173 pageidavimus.<\/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\">Per kelias minutes sukurkite efektyvius mokslinius paveiksl\u0117lius<\/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=\"Neuron\u0173 sinaps\u0117s Infografikas\" 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>\u0160iame straipsnyje ap\u017evelkime, kas yra sigmos modelis arba funkcija, ir visus skirtingus j\u0173 etapus. <\/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\" content=\"Let&#039;s take a look at what a 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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. 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