{"id":1449,"date":"2022-05-16T22:56:21","date_gmt":"2022-05-16T22:56:21","guid":{"rendered":"https:\/\/savangard.com\/?p=1449"},"modified":"2025-04-28T09:42:54","modified_gmt":"2025-04-28T09:42:54","slug":"data-has-a-better-idea-czyli-jak-maszyny-sie-ucza","status":"publish","type":"post","link":"https:\/\/savangard.com\/pl\/data-has-a-better-idea-czyli-jak-maszyny-sie-ucza\/","title":{"rendered":"Data has a better idea czyli jak maszyny si\u0119 ucz\u0105"},"content":{"rendered":"<header class=\"hero-article\">\n    <div class=\"hero-article--hero\">\n      <div class=\"hero-article--hero-container container\">\n        <div class=\"row justify-content-center\">\n          <div class=\"col-lg-10\">\n            <div class=\"hero-article--wrapper\">\n              <div class=\"hero-article--hero-bg gradient stretch-common\">\n                                  <img decoding=\"async\" src=\"https:\/\/savangard.com\/wp-content\/uploads\/2022\/05\/markus-spiske-iar-afB0QQw-unsplash-1460x560.jpg\" alt=\"Data has a better idea czyli jak maszyny si\u0119 ucz\u0105\">\n                              <\/div>\n              <div class=\"hero-article--hero-content\">\n                                                  <div class=\"blog-articles--item-category blog-articles--item-category__light\">\n                                          <a href=\"https:\/\/savangard.com\/pl\/tag\/ai\/\" class=\"stretch-common-related\">AI<\/a>\n                                          <a href=\"https:\/\/savangard.com\/pl\/tag\/machine-learning-2\/\" class=\"stretch-common-related\">Machine learning<\/a>\n                                      <\/div>\n                                                  <h1 class=\"hero-article--hero-heading\">Data has a better idea czyli jak maszyny si\u0119 ucz\u0105<\/h1>\n                                                  <p class=\"hero-article--hero-desc hero-article--hero-desc__short\">\n                    Jak przebiega proces uczenia si\u0119 przez maszyny?<br>\n                                      <\/p>\n                                <div class=\"hero--arrow d-lg-none\">\n                  <a href=\"#\" data-scroll-to=\"next-section\">\n                    <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"48\" height=\"48\" viewBox=\"0 0 48 48\" class=\"arrow-down\">\n  <g fill=\"none\" stroke=\"#06dc22\" stroke-width=\"2\">\n    <rect width=\"48\" height=\"48\" rx=\"24\" stroke=\"none\"\/>\n    <rect x=\"1\" y=\"1\" width=\"46\" height=\"46\" rx=\"23\" fill=\"none\"\/>\n  <\/g>\n  <g transform=\"translate(12 12)\">\n    <g id=\"arrow-downward\">\n      <rect width=\"24\" height=\"24\" fill=\"#06dc22\" opacity=\"0\"\/>\n      <path d=\"M18.77,13.36a1,1,0,0,0-1.41-.13L13,16.86V5a1,1,0,0,0-2,0V16.86L6.64,13.23a1,1,0,1,0-1.28,1.54l6,5,.15.09.13.07a1,1,0,0,0,.72,0l.13-.07.15-.09,6-5a1,1,0,0,0,.13-1.41Z\" fill=\"#06dc22\" class=\"arrow-down-arrow\"\/>\n    <\/g>\n  <\/g>\n<\/svg>\n                  <\/a>\n                <\/div>\n              <\/div>\n            <\/div>\n          <\/div>\n        <\/div>\n      <\/div>\n    <\/div>\n          <\/header>\n\n\n\n<section class=\"blog-content alignwide\" id=\"section-1\">\n  <div class=\"container\">\n    <div class=\"row justify-content-center\" data-aos=\"fade-up\">\n      <div class=\"col-lg-10\">\n        <div class=\"blog-content--row\">\n          <div class=\"blog-content--col blog-content--col__empty\"><\/div>\n          <div class=\"blog-content--main\">\n            <div class=\"blog-content--meta blog-content--meta__top\">\n                              <footer class=\"blog-content--meta-user\">\n                                      <img decoding=\"async\" src=\"https:\/\/secure.gravatar.com\/avatar\/da2d7ac7ad84daf0e33f70963ba43baa05ef78bf0a7adb42d4936267e19ebf8b?s=70&#038;d=mm&#038;r=g\" alt=\"Jakub Michalik\"\n                         class=\"blog-content--meta-user-photo\">\n                                    <div class=\"blog-content--meta-user-content\">\n                    <div class=\"blog-content--meta-user-name\">Jakub Michalik<\/div>\n                                      <\/div>\n                <\/footer>\n                            <div\n                class=\"blog-content--meta-read-time\">4 min czytania<\/div>\n            <\/div>\n            <div class=\"blog-content--decorator\" data-aos=\"zoom-in\" data-aos-delay=\"500\"><\/div>\n            <div class=\"blog-content--content\">\n              <p>Uczenie maszynowe zaczyna otacza\u0107 nas w&nbsp;codziennym \u017cyciu. Wed\u0142ug Gartnera do 2020 r. chatboty w&nbsp;85% przejm\u0105 proces obs\u0142ugi klienta. 41% konsument\u00f3w wierzy, \u017ce AI poprawi jako\u015b\u0107 ich \u017cycia. Portal Netflix zaoszcz\u0119dza ok. miliona dolar\u00f3w rocznie stosuj\u0105c algorytm uczenia maszynowego, kt\u00f3ry na podstawie naszych przesz\u0142ych decyzji personalizuje propozycje kolejnych tytu\u0142\u00f3w do ogl\u0105dania. Nikogo ju\u017c nie potrzeby przekonywa\u0107, \u017ce ML to nie przysz\u0142o\u015b\u0107, ale tera\u017aniejszo\u015b\u0107, a&nbsp;firmy inwestuj\u0105 w&nbsp;nie krocie, poniewa\u017c zdaj\u0105 sobie spraw\u0119 jakie wymierne korzy\u015bci mog\u0105 przynie\u015b\u0107 im algorytmy uczenia maszynowego. Warto zatem zada\u0107 podstawowe pytanie. Jak proces uczenia si\u0119 przebiega?<\/p>\n<p><strong>Na uczenie maszynowe sk\u0142adaj\u0105 si\u0119 3 g\u0142\u00f3wne elementy:*<\/strong><\/p>\n<ol>\n<li>Model<\/li>\n<li>Parametry<\/li>\n<li>Mo\u017cliwo\u015b\u0107 uczenia si\u0119<\/li>\n<\/ol>\n<p>Modelem jest system, kt\u00f3ry tworzy przewidywania\/identyfikacje. Parametry, okre\u015blane na podstawie dostarczanych do systemu danych, to czynniki na podstawie kt\u00f3rych model formu\u0142uje swoje decyzje. Mo\u017cliwo\u015b\u0107 uczenia si\u0119 \u2013 system dostosowuje model obserwuj\u0105c r\u00f3\u017cnice pomi\u0119dzy przewidywaniami a&nbsp;wynikami rzeczywistymi.<\/p>\n<p>W za\u0142o\u017ceniu algorytmy maj\u0105 uczy\u0107 si\u0119, czyli doskonali\u0107 si\u0119 na podstawie obserwacji r\u00f3\u017cnic w&nbsp;wynikach, aktualizowa\u0107 parametry na podstawie nowych danych, usprawnia\u0107 dzia\u0142anie i&nbsp;gromadzi\u0107 do\u015bwiadczenia.<\/p>\n<p>W ML mo\u017ce by\u0107 stosowane kilka rodzaj\u00f3w algorytm\u00f3w, kilka sposob\u00f3w si\u0119 uczenia si\u0119. Jakie s\u0105 mi\u0119dzy nimi podstawowe r\u00f3\u017cnice?<\/p>\n<p>&nbsp;<\/p>\n<h3>SPOSOBY UCZENIA SI\u0118<\/h3>\n<p><strong>Uczenie nadzorowane (supervised learning) czyli uczenie si\u0119 na podstawie przyk\u0142ad\u00f3w<\/strong><\/p>\n<p>Tworzenie tego modelu polega na dostarczeniu kompletu danych wej\u015bciowych i&nbsp;wyj\u015bciowych, czyli informacji o&nbsp;wyniku jaki jest oczekiwany. To czego oczekujemy to, \u017ce po zasileniu odpowiedni\u0105 ilo\u015bci\u0105 danych algorytm w&nbsp;momencie gdy pojawi si\u0119 dana z&nbsp;poza bazy b\u0119dzie w&nbsp;stanie j\u0105 odpowiednio sklasyfikowa\u0107.<\/p>\n<p>Mo\u017cliwo\u015bci zastosowania\u00a0 \u2013 zarz\u0105dzanie ryzkiem, wykrywanie nadu\u017cy\u0107 personalizacja interakcji, rozpoznawanie mowy i&nbsp;tekstu.<\/p>\n<p><strong>Uczenie nienadzorowane (unsupervised learning)<\/strong><\/p>\n<p>W tym przypadku model zasilany jest danymi wej\u015bciowymi. Dopiero na podstawie analizy otrzymanych danych algorytm powinien odnale\u017a\u0107 wz\u00f3r i&nbsp;na jego podstawie dostarczy\u0107 nam dane wyj\u015bciowe. Kluczowym zadaniem systemu jest zidentyfikowanie z\u0142o\u017conych proces\u00f3w i&nbsp;wzorc\u00f3w we w\u0142asnym zakresie, bez konieczno\u015bci dostarczania przez cz\u0142owieka wskaz\u00f3wek. W tym rodzaju uczenia si\u0119 mo\u017cemy dopatrywa\u0107 si\u0119 wi\u0119kszego podobie\u0144stwa do dzia\u0142ania ludzkiego m\u00f3zgu \u2013 wnioski wyci\u0105ganie s\u0105 na podstawie analizy i&nbsp;obserwacji.<\/p>\n<p>Mo\u017cliwo\u015bci zastosowania \u2013 rozpoznawanie podobnych obiekt\u00f3w, analiza koszyka zakupowego.<\/p>\n<p><strong>Uczenie przez wzmacnianie (reinforcement learning)<\/strong><\/p>\n<p>W tym rodzaju uczenia si\u0119 nie dostarczmy do modelu ani danych wej\u015bciowych ani wyj\u015bciowych. Jedyne informacje jakie otrzymuje to sygna\u0142 wzmocnienia czyli nagrod\u0119 w&nbsp;przypadku trafnego wyboru i&nbsp;kar\u0119 w&nbsp;przypadku b\u0142\u0119dnie podj\u0119tego dzia\u0142ania. Kluczem tutaj jest interakcja z&nbsp;otoczeniem. Agent ocenia stan \u015brodowiska i&nbsp;na podstawie obserwacji podejmuje dzia\u0142anie kt\u00f3re jest nagradzane lub karane. Przyk\u0142adem obrazuj\u0105cym dzia\u0142anie tego rodzaju algorytmu mo\u017ce by\u0107 nauka gry w&nbsp;szachy: dobry wyb\u00f3r ruch\u00f3w jest nagradzany zwyci\u0119stwem lub karany pora\u017ck\u0105 w&nbsp;partii. Niew\u0105tpliw\u0105 zalet\u0105 tego podej\u015bcia jest fakt, w&nbsp;tym przypadku model mo\u017ce porusza\u0107 si\u0119 w&nbsp;zupe\u0142nie nieznanym \u015brodowisku i&nbsp;\u00a0pod\u0105\u017caj\u0105c za metod\u0105 pr\u00f3b i&nbsp;b\u0142\u0119d\u00f3w b\u0119dzie w&nbsp;stanie radzi\u0107 sobie w&nbsp;nim coraz lepiej.<\/p>\n<p>Mo\u017cliwo\u015bci zastosowania\u00a0 \u2013 planowanie strategii w&nbsp;grach, optymalizacja przepustowo\u015bci ruchu w&nbsp;sieci.<\/p>\n<p>Dane kryj\u0105 wiele sekret\u00f3w w&nbsp;postaci cennych informacji, zw\u0142aszcza je\u015bli dysponujemy ich du\u017c\u0105 ilo\u015bci\u0105. Odnajdowanie w&nbsp;nich wzorc\u00f3w, pozwala nam otrzyma\u0107 nowe informacje i&nbsp;bez wzgl\u0119du jaki rodzaj algorytmu zastosujemy mo\u017ce przynie\u015b\u0107 wiele wymiernych korzy\u015bci.<\/p>\n\n            <\/div>\n            <footer class=\"blog-content--meta blog-content--meta__bottom\">\n                              <footer class=\"blog-content--meta-user\">\n                                      <img decoding=\"async\" src=\"https:\/\/secure.gravatar.com\/avatar\/da2d7ac7ad84daf0e33f70963ba43baa05ef78bf0a7adb42d4936267e19ebf8b?s=70&#038;d=mm&#038;r=g\" alt=\"Jakub Michalik\"\n                         class=\"blog-content--meta-user-photo\">\n                                    <div class=\"blog-content--meta-user-content\">\n                    <div class=\"blog-content--meta-user-name\">Jakub Michalik<\/div>\n                                      <\/div>\n                <\/footer>\n                          <\/footer>\n          <\/div>\n          <div 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