{"id":3043,"date":"2023-07-19T11:54:34","date_gmt":"2023-07-19T11:54:34","guid":{"rendered":"https:\/\/statorials.org\/pl\/podzial-pociagu-testowego-r\/"},"modified":"2023-07-19T11:54:34","modified_gmt":"2023-07-19T11:54:34","slug":"podzial-pociagu-testowego-r","status":"publish","type":"post","link":"https:\/\/statorials.org\/pl\/podzial-pociagu-testowego-r\/","title":{"rendered":"Jak dzieli\u0107 dane w szkoleniu &amp; #038; zestawy testowe w r (3 metody)"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">Cz\u0119sto, gdy dostosowujemy <a href=\"https:\/\/statorials.org\" target=\"_blank\" rel=\"noopener\">algorytmy uczenia maszynowego<\/a> do zbior\u00f3w danych, najpierw dzielimy zbi\u00f3r danych na zbi\u00f3r ucz\u0105cy i zbi\u00f3r testowy.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Istniej\u0105 trzy popularne sposoby dzielenia danych na zbiory szkoleniowe i testowe w R:<\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>Metoda 1: U\u017cyj podstawy R<\/strong><\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#make this example reproducible\n<\/span>set. <span style=\"color: #3366ff;\">seeds<\/span> (1)\n\n<span style=\"color: #008080;\">#use 70% of dataset as training set and 30% as test set\n<\/span>sample &lt;- sample(c( <span style=\"color: #008000;\">TRUE<\/span> , <span style=\"color: #008000;\">FALSE<\/span> ), nrow(df), replace= <span style=\"color: #008000;\">TRUE<\/span> , prob=c( <span style=\"color: #008000;\">0.7<\/span> , <span style=\"color: #008000;\">0.3<\/span> ))\ntrain &lt;- df[sample, ]\ntest &lt;- df[!sample, ]<\/strong><\/pre>\n<p> <span style=\"color: #000000;\"><strong>Metoda 2: U\u017cyj pakietu caTools<\/strong><\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\"><span style=\"color: #000000;\"><span style=\"color: #008000;\">library<\/span> (caTools)<\/span>\n\n#make this example reproducible\n<\/span>set. <span style=\"color: #3366ff;\">seeds<\/span> (1)\n\n<span style=\"color: #008080;\">#use 70% of dataset as training set and 30% as test set\n<\/span>sample &lt;- sample. <span style=\"color: #3366ff;\">split<\/span> (df$any_column_name, SplitRatio = <span style=\"color: #008000;\">0.7<\/span> )\ntrain &lt;- subset(df, sample == <span style=\"color: #008000;\">TRUE<\/span> )\ntest &lt;- subset(df, sample == <span style=\"color: #008000;\">FALSE<\/span> )<\/strong><\/pre>\n<p> <span style=\"color: #000000;\"><strong>Metoda 3: U\u017cyj pakietu dplyr<\/strong><\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\"><span style=\"color: #000000;\"><span style=\"color: #008000;\">library<\/span> (dplyr)<\/span>\n\n#make this example reproducible\n<\/span>set. <span style=\"color: #3366ff;\">seeds<\/span> (1)\n\n<span style=\"color: #008080;\">#create ID column\n<\/span>df$id &lt;- 1:nrow(df)\n\n<span style=\"color: #008080;\">#use 70% of dataset as training set and 30% as test set<\/span>\ntrain &lt;- df %&gt;% dplyr::sample_frac( <span style=\"color: #008000;\">0.70<\/span> )\ntest &lt;- dplyr::anti_join(df, train, by = ' <span style=\"color: #ff0000;\">id<\/span> ')<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Poni\u017csze przyk\u0142ady pokazuj\u0105, jak w praktyce zastosowa\u0107 ka\u017cd\u0105 metod\u0119 z wbudowanym <a href=\"https:\/\/statorials.org\/pl\/zbior-danych-iris-r\/\" target=\"_blank\" rel=\"noopener\">zbiorem danych iris<\/a> w R.<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Przyk\u0142ad 1: Podziel dane na zbiory ucz\u0105ce i testuj\u0105ce przy u\u017cyciu Base R<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\"><span style=\"color: #000000;\">Poni\u017cszy kod pokazuje, jak u\u017cy\u0107 bazy R do podzielenia zbioru danych iris na zbi\u00f3r ucz\u0105cy i testuj\u0105cy, wykorzystuj\u0105c 70% wierszy jako zbi\u00f3r ucz\u0105cy, a pozosta\u0142e 30% jako zbi\u00f3r testowy:<\/span><\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#load iris dataset\n<\/span>data(iris)\n\n<span style=\"color: #008080;\">#make this example reproducible\n<\/span>set. <span style=\"color: #3366ff;\">seeds<\/span> (1)\n\n<span style=\"color: #008080;\">#Use 70% of dataset as training set and remaining 30% as testing set\n<\/span>sample &lt;- sample(c( <span style=\"color: #008000;\">TRUE<\/span> , <span style=\"color: #008000;\">FALSE<\/span> ), nrow(iris), replace= <span style=\"color: #008000;\">TRUE<\/span> , prob=c( <span style=\"color: #008000;\">0.7<\/span> , <span style=\"color: #008000;\">0.3<\/span> ))\ntrain &lt;- iris[sample, ]\ntest &lt;- iris[!sample, ]\n\n<span style=\"color: #008080;\">#view dimensions of training set\n<\/span>sun(train)\n\n[1] 106 5\n\n<span style=\"color: #008080;\">#view dimensions of test set\n<\/span>dim(test)\n\n[1] 44 5<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Z wyniku mo\u017cemy zobaczy\u0107:<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\">Zbi\u00f3r szkoleniowy to ramka danych sk\u0142adaj\u0105ca si\u0119 ze 106 wierszy i 5 kolumn.<\/span><\/li>\n<li> <span style=\"color: #000000;\">Test to blok danych sk\u0142adaj\u0105cy si\u0119 z 44 wierszy i 5 kolumn.<\/span><\/li>\n<\/ul>\n<p> <span style=\"color: #000000;\">Poniewa\u017c oryginalna baza danych zawiera\u0142a w sumie 150 wierszy, zbi\u00f3r ucz\u0105cy zawiera oko\u0142o 106\/150 = 70,6% oryginalnych wierszy.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Je\u015bli chcemy, mo\u017cemy r\u00f3wnie\u017c wy\u015bwietli\u0107 kilka pierwszych wierszy zestawu treningowego:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#view first few rows of training set\n<\/span>head(train)\n\n  Sepal.Length Sepal.Width Petal.Length Petal.Width Species\n1 5.1 3.5 1.4 0.2 setosa\n2 4.9 3.0 1.4 0.2 setosa\n3 4.7 3.2 1.3 0.2 setosa\n5 5.0 3.6 1.4 0.2 setosa\n8 5.0 3.4 1.5 0.2 setosa\n9 4.4 2.9 1.4 0.2 setosa\n<\/strong><\/pre>\n<h3> <span style=\"color: #000000;\"><strong>Przyk\u0142ad 2: Podzia\u0142 danych na zbiory ucz\u0105ce i testowe za pomoc\u0105 narz\u0119dzia caTools<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">Poni\u017cszy kod pokazuje, jak u\u017cy\u0107 pakietu <strong>caTools<\/strong> w R do podzielenia zbioru danych iris na zbi\u00f3r ucz\u0105cy i testuj\u0105cy, wykorzystuj\u0105c 70% wierszy jako zbi\u00f3r ucz\u0105cy, a pozosta\u0142e 30% jako zbi\u00f3r testowy:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\"><span style=\"color: #000000;\"><span style=\"color: #008000;\">library<\/span> (caTools)<\/span>\n\n#load iris dataset\n<\/span>data(iris)\n\n<span style=\"color: #008080;\">#make this example reproducible\n<\/span>set. <span style=\"color: #3366ff;\">seeds<\/span> (1)\n\n<span style=\"color: #008080;\">#Use 70% of dataset as training set and remaining 30% as testing set\n<\/span>sample &lt;- sample. <span style=\"color: #3366ff;\">split<\/span> (iris$Species, SplitRatio = <span style=\"color: #008000;\">0.7<\/span> )\ntrain &lt;- subset(iris, sample == <span style=\"color: #008000;\">TRUE<\/span> )\ntest &lt;- subset(iris, sample == <span style=\"color: #008000;\">FALSE<\/span> )\n\n<span style=\"color: #008080;\">#view dimensions of training set\n<\/span>sun(train)\n\n[1] 105 5\n\n<span style=\"color: #008080;\">#view dimensions of test set\n<\/span>dim(test)\n\n[1] 45 5<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Z wyniku mo\u017cemy zobaczy\u0107:<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\">Zbi\u00f3r szkoleniowy to ramka danych sk\u0142adaj\u0105ca si\u0119 ze 105 wierszy i 5 kolumn.<\/span><\/li>\n<li> <span style=\"color: #000000;\">Test to blok danych sk\u0142adaj\u0105cy si\u0119 z 45 wierszy i 5 kolumn.<\/span><\/li>\n<\/ul>\n<h3> <span style=\"color: #000000;\"><strong>Przyk\u0142ad 3: Podziel dane na zbiory ucz\u0105ce i testuj\u0105ce za pomoc\u0105 dplyr<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">Poni\u017cszy kod pokazuje, jak u\u017cy\u0107 pakietu <strong>caTools<\/strong> w R do podzielenia zbioru danych iris na zbi\u00f3r ucz\u0105cy i testuj\u0105cy, wykorzystuj\u0105c 70% wierszy jako zbi\u00f3r ucz\u0105cy, a pozosta\u0142e 30% jako zbi\u00f3r testowy:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\"><span style=\"color: #000000;\"><span style=\"color: #008000;\">library<\/span> (dplyr)<\/span>\n\n#load iris dataset\n<\/span>data(iris)\n\n<span style=\"color: #008080;\">#make this example reproducible\n<\/span>set. <span style=\"color: #3366ff;\">seeds<\/span> (1)\n\n<span style=\"color: #008080;\">#create variable ID\n<\/span>iris$id &lt;- 1:nrow(iris)\n\n<span style=\"color: #008080;\">#Use 70% of dataset as training set and remaining 30% as testing set<\/span> \ntrain &lt;- iris %&gt;% dplyr::sample_frac( <span style=\"color: #008000;\">0.7<\/span> )\ntest &lt;- dplyr::anti_join(iris, train, by = ' <span style=\"color: #ff0000;\">id<\/span> ')\n\n<span style=\"color: #008080;\">#view dimensions of training set\n<\/span>sun(train)\n\n[1] 105 6\n\n<span style=\"color: #008080;\">#view dimensions of test set\n<\/span>dim(test)\n\n[1] 45 6\n<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Z wyniku mo\u017cemy zobaczy\u0107:<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\">Zbi\u00f3r szkoleniowy to ramka danych sk\u0142adaj\u0105ca si\u0119 ze 105 wierszy i 6 kolumn.<\/span><\/li>\n<li> <span style=\"color: #000000;\">Test to blok danych sk\u0142adaj\u0105cy si\u0119 z 45 wierszy i 6 kolumn.<\/span><\/li>\n<\/ul>\n<p> <span style=\"color: #000000;\">Nale\u017cy pami\u0119ta\u0107, \u017ce te zestawy szkoleniowe i testowe zawieraj\u0105 dodatkow\u0105 kolumn\u0119 \u201eid\u201d, kt\u00f3r\u0105 utworzyli\u015bmy.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Upewnij si\u0119, \u017ce nie u\u017cywasz tej kolumny (lub ca\u0142kowicie usuwasz j\u0105 z ramek danych) podczas dostosowywania algorytmu uczenia maszynowego.<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Dodatkowe zasoby<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">Poni\u017csze samouczki wyja\u015bniaj\u0105, jak wykonywa\u0107 inne typowe operacje w j\u0119zyku R:<\/span><\/p>\n<p> <a href=\"https:\/\/statorials.org\/pl\/jak-obliczyc-mse-w-r\/\" target=\"_blank\" rel=\"noopener\">Jak obliczy\u0107 MSE w R<\/a><br \/> <a href=\"https:\/\/statorials.org\/pl\/jak-obliczyc-rmse-w-r\/\" target=\"_blank\" rel=\"noopener\">Jak obliczy\u0107 RMSE w R<\/a><br \/> <a href=\"https:\/\/statorials.org\/pl\/r-kwadratow-w-r-pasuje\/\" target=\"_blank\" rel=\"noopener\">Jak obliczy\u0107 skorygowany R-kwadrat w R<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Cz\u0119sto, gdy dostosowujemy algorytmy uczenia maszynowego do zbior\u00f3w danych, najpierw dzielimy zbi\u00f3r danych na zbi\u00f3r ucz\u0105cy i zbi\u00f3r testowy. Istniej\u0105 trzy popularne sposoby dzielenia danych na zbiory szkoleniowe i testowe w R: Metoda 1: U\u017cyj podstawy R #make this example reproducible set. seeds (1) #use 70% of dataset as training set and 30% as test [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[],"class_list":["post-3043","post","type-post","status-publish","format-standard","hentry","category-przewodnik"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Jak podzieli\u0107 dane na zbiory ucz\u0105ce i testowe w R (3 metody) - Statologia<\/title>\n<meta name=\"description\" content=\"W tym samouczku wyja\u015bniono, jak podzieli\u0107 dane na zbiory szkoleniowe i testowe w j\u0119zyku R przy u\u017cyciu trzech r\u00f3\u017cnych metod.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/statorials.org\/pl\/podzial-pociagu-testowego-r\/\" \/>\n<meta property=\"og:locale\" content=\"pl_PL\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Jak podzieli\u0107 dane na zbiory ucz\u0105ce i testowe w R (3 metody) - Statologia\" \/>\n<meta property=\"og:description\" content=\"W tym samouczku wyja\u015bniono, jak podzieli\u0107 dane na zbiory szkoleniowe i testowe w j\u0119zyku R przy u\u017cyciu trzech r\u00f3\u017cnych metod.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/pl\/podzial-pociagu-testowego-r\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-19T11:54:34+00:00\" \/>\n<meta name=\"author\" content=\"Benjamin Anderson\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Napisane przez\" \/>\n\t<meta name=\"twitter:data1\" content=\"Benjamin Anderson\" \/>\n\t<meta name=\"twitter:label2\" content=\"Szacowany czas czytania\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 minuty\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/statorials.org\/pl\/podzial-pociagu-testowego-r\/\",\"url\":\"https:\/\/statorials.org\/pl\/podzial-pociagu-testowego-r\/\",\"name\":\"Jak podzieli\u0107 dane na zbiory ucz\u0105ce i testowe w R (3 metody) - Statologia\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/pl\/#website\"},\"datePublished\":\"2023-07-19T11:54:34+00:00\",\"dateModified\":\"2023-07-19T11:54:34+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/pl\/#\/schema\/person\/6484727a4612df3e69f016c3129c6965\"},\"description\":\"W tym samouczku wyja\u015bniono, jak podzieli\u0107 dane na zbiory szkoleniowe i testowe w j\u0119zyku R przy u\u017cyciu trzech r\u00f3\u017cnych metod.\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/pl\/podzial-pociagu-testowego-r\/#breadcrumb\"},\"inLanguage\":\"pl-PL\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/pl\/podzial-pociagu-testowego-r\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/pl\/podzial-pociagu-testowego-r\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Dom\",\"item\":\"https:\/\/statorials.org\/pl\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Jak dzieli\u0107 dane w szkoleniu &amp; #038; zestawy testowe w r (3 metody)\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/statorials.org\/pl\/#website\",\"url\":\"https:\/\/statorials.org\/pl\/\",\"name\":\"Statorials\",\"description\":\"Tw\u00f3j przewodnik po kompetencjach statystycznych!\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/statorials.org\/pl\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"pl-PL\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/statorials.org\/pl\/#\/schema\/person\/6484727a4612df3e69f016c3129c6965\",\"name\":\"Benjamin Anderson\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"pl-PL\",\"@id\":\"https:\/\/statorials.org\/pl\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/statorials.org\/pl\/wp-content\/uploads\/2023\/11\/Benjamin-Anderson-96x96.jpg\",\"contentUrl\":\"https:\/\/statorials.org\/pl\/wp-content\/uploads\/2023\/11\/Benjamin-Anderson-96x96.jpg\",\"caption\":\"Benjamin Anderson\"},\"description\":\"Cze\u015b\u0107, jestem Benjamin i jestem emerytowanym profesorem statystyki, kt\u00f3ry zosta\u0142 oddanym nauczycielem Statorials. 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