{"id":1749,"date":"2023-07-25T03:40:00","date_gmt":"2023-07-25T03:40:00","guid":{"rendered":"https:\/\/statorials.org\/tr\/r-cinsinden-mor-cp-nasil-hesaplanir\/"},"modified":"2023-07-25T03:40:00","modified_gmt":"2023-07-25T03:40:00","slug":"r-cinsinden-mor-cp-nasil-hesaplanir","status":"publish","type":"post","link":"https:\/\/statorials.org\/tr\/r-cinsinden-mor-cp-nasil-hesaplanir\/","title":{"rendered":"R&#39;de mor &#39;cp nas\u0131l hesaplan\u0131r?"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">Regresyon analizinde <a href=\"https:\/\/statorials.org\/tr\/mor-cp\/\" target=\"_blank\" rel=\"noopener\">Mallows Cp<\/a> , \u00e7e\u015fitli potansiyel modeller aras\u0131ndan en iyi regresyon modelini se\u00e7mek i\u00e7in kullan\u0131lan bir \u00f6l\u00e7\u00fcmd\u00fcr.<\/span><\/p>\n<p> <span style=\"color: #000000;\"><em>P<\/em> +1&#8217;e yak\u0131n en d\u00fc\u015f\u00fck Cp de\u011ferine sahip modeli belirleyerek &#8220;en iyi&#8221; regresyon modelini belirleyebiliriz; burada <em>p<\/em> , modeldeki yorday\u0131c\u0131 de\u011fi\u015fkenlerin say\u0131s\u0131d\u0131r.<\/span><\/p>\n<p> <span style=\"color: #000000;\">R&#8217;deki Mallows&#8217;un Cp&#8217;sini hesaplaman\u0131n en kolay yolu <strong>olsrr<\/strong> paketindeki <a href=\"https:\/\/www.rdocumentation.org\/packages\/olsrr\/versions\/0.5.3\/topics\/ols_mallows_cp\" target=\"_blank\" rel=\"noopener\">ols_mallows_cp()<\/a> fonksiyonunu kullanmakt\u0131r.<\/span><\/p>\n<p> <span style=\"color: #000000;\">A\u015fa\u011f\u0131daki \u00f6rnek, R&#8217;deki \u00e7e\u015fitli potansiyel modeller aras\u0131ndan en iyi regresyon modelini se\u00e7mek amac\u0131yla Mallows&#8217; Cp&#8217;yi hesaplamak i\u00e7in bu fonksiyonun nas\u0131l kullan\u0131laca\u011f\u0131n\u0131 g\u00f6sterir.<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>\u00d6rnek: R&#8217;de Mallows Cp&#8217;nin hesaplanmas\u0131<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">Diyelim ki <strong>mtcars<\/strong> veri k\u00fcmesindeki de\u011fi\u015fkenleri kullanarak \u00fc\u00e7 farkl\u0131 \u00e7oklu do\u011frusal regresyon modelini s\u0131\u011fd\u0131rmak istiyoruz.<\/span><\/p>\n<p> <span style=\"color: #000000;\">A\u015fa\u011f\u0131daki kod, a\u015fa\u011f\u0131daki regresyon modellerinin nas\u0131l s\u0131\u011fd\u0131r\u0131laca\u011f\u0131n\u0131 g\u00f6sterir:<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\">Tam modeldeki tahmin de\u011fi\u015fkenleri: 10 de\u011fi\u015fken<\/span><\/li>\n<li> <span style=\"color: #000000;\">Model 1&#8217;deki tahmin de\u011fi\u015fkenleri: disp, hp, wt, qsec<\/span><\/li>\n<li> <span style=\"color: #000000;\">Model 2&#8217;deki tahmin de\u011fi\u015fkenleri: disp, qsec<\/span><\/li>\n<li> <span style=\"color: #000000;\">Model 3&#8217;teki tahmin de\u011fi\u015fkenleri: disp, wt<\/span><\/li>\n<\/ul>\n<p> <span style=\"color: #000000;\">A\u015fa\u011f\u0131daki kod, bu regresyon modellerinin her birine nas\u0131l uyulaca\u011f\u0131n\u0131 ve her modelin Mallows Cp&#8217;sini hesaplamak i\u00e7in <a href=\"https:\/\/www.rdocumentation.org\/packages\/olsrr\/versions\/0.5.3\/topics\/ols_mallows_cp\" target=\"_blank\" rel=\"noopener\">ols_mallows_cp()<\/a> i\u015flevinin nas\u0131l kullan\u0131laca\u011f\u0131n\u0131 g\u00f6sterir:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #993300;\">library<\/span> (olsrr)\n\n<span style=\"color: #008080;\">#fit full model\n<\/span>full_model &lt;- lm(mpg ~ ., data = mtcars)\n\n<span style=\"color: #008080;\">#fit three smaller models\n<\/span>model1 &lt;- lm(mpg ~ disp + hp + wt + qsec, data = mtcars)\nmodel2 &lt;- lm(mpg ~ disp + qsec, data = mtcars)\nmodel3 &lt;- lm(mpg ~ disp + wt, data = mtcars)\n\n<span style=\"color: #008080;\">#calculate Mallows' Cp for each model\n<\/span>ols_mallows_cp(model1, full_model)\n\n[1] 4.430434\n\nols_mallows_cp(model2, full_model)\n\n[1] 18.64082\n\nols_mallows_cp(model3, full_model)\n\n[1] 9.122225\n<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Sonucun nas\u0131l yorumlanaca\u011f\u0131 a\u015fa\u011f\u0131da a\u00e7\u0131klanm\u0131\u015ft\u0131r:<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\">Model 1: <em>p<\/em> + 1 = 5, Ebeg\u00fcmeci Cp = 4,43<\/span><\/li>\n<li> <span style=\"color: #000000;\">Model 2: <em>p<\/em> + 1 = 3, Ebeg\u00fcmeci Cp = 18,64<\/span><\/li>\n<li> <span style=\"color: #000000;\">Model 3: <em>p<\/em> + 1 = 30, Ebeg\u00fcmeci Cp = 9,12<\/span><\/li>\n<\/ul>\n<p> <span style=\"color: #000000;\">Model 1&#8217;in Mallows&#8217; Cp i\u00e7in <em>p<\/em> + 1&#8217;e en yak\u0131n de\u011fere sahip oldu\u011funu g\u00f6rebiliriz, bu da \u00fc\u00e7 potansiyel model aras\u0131nda en az yanl\u0131l\u0131\u011fa yol a\u00e7an en iyi model oldu\u011funu g\u00f6sterir.<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Cp des mauves \u00fczerine notlar<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">Mallows Cp hakk\u0131nda ak\u0131lda tutulmas\u0131 gereken baz\u0131 \u015feyler \u015funlard\u0131r:<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\">Her potansiyel modelin Mallows Cp de\u011feri y\u00fcksekse bu, baz\u0131 \u00f6nemli yorday\u0131c\u0131 de\u011fi\u015fkenlerin muhtemelen her modelde eksik oldu\u011funu g\u00f6sterir.<\/span><\/li>\n<li> <span style=\"color: #000000;\">Birka\u00e7 potansiyel modelin Mallow&#8217;s Cp de\u011feri d\u00fc\u015f\u00fckse, kullan\u0131lacak en iyi model olarak en d\u00fc\u015f\u00fck de\u011fere sahip modeli se\u00e7in.<\/span><\/li>\n<\/ul>\n<p> <span style=\"color: #000000;\">Mallows&#8217; Cp&#8217;nin \u00e7e\u015fitli potansiyel modeller aras\u0131nda &#8220;en iyi&#8221; regresyon modelini tan\u0131mlaman\u0131n yaln\u0131zca bir yolu oldu\u011funu unutmay\u0131n.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Yayg\u0131n olarak kullan\u0131lan bir di\u011fer \u00f6l\u00e7\u00fc, kullan\u0131lan yorday\u0131c\u0131 de\u011fi\u015fkenlerin say\u0131s\u0131na g\u00f6re ayarlanan, modeldeki yorday\u0131c\u0131 de\u011fi\u015fkenler taraf\u0131ndan a\u00e7\u0131klanabilen <a href=\"https:\/\/statorials.org\/tr\/degiskenleri-aciklayici-yanitlar\/\" target=\"_blank\" rel=\"noopener\">yan\u0131t<\/a> de\u011fi\u015fkenindeki varyans\u0131n oran\u0131n\u0131 bize s\u00f6yleyen d\u00fczeltilmi\u015f R-karedir.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Birka\u00e7 farkl\u0131 modelden olu\u015fan listeden hangi regresyon modelinin en iyi oldu\u011funa karar vermek i\u00e7in hem Mallows&#8217; Cp&#8217;ye hem de d\u00fczeltilmi\u015f R-kare&#8217;ye bakman\u0131z \u00f6nerilir.<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Ek kaynaklar<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\"><a href=\"https:\/\/statorials.org\/tr\/rdeki-r-kareler-uyar\/\" target=\"_blank\" rel=\"noopener\">R&#8217;de d\u00fczeltilmi\u015f R-kare nas\u0131l hesaplan\u0131r<\/a><br \/> <a href=\"https:\/\/statorials.org\/tr\/aicden-r'ye\/\" target=\"_blank\" rel=\"noopener\">R&#8217;de AIC nas\u0131l hesaplan\u0131r<\/a><br \/><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Regresyon analizinde Mallows Cp , \u00e7e\u015fitli potansiyel modeller aras\u0131ndan en iyi regresyon modelini se\u00e7mek i\u00e7in kullan\u0131lan bir \u00f6l\u00e7\u00fcmd\u00fcr. P +1&#8217;e yak\u0131n en d\u00fc\u015f\u00fck Cp de\u011ferine sahip modeli belirleyerek &#8220;en iyi&#8221; regresyon modelini belirleyebiliriz; burada p , modeldeki yorday\u0131c\u0131 de\u011fi\u015fkenlerin say\u0131s\u0131d\u0131r. R&#8217;deki Mallows&#8217;un Cp&#8217;sini hesaplaman\u0131n en kolay yolu olsrr paketindeki ols_mallows_cp() fonksiyonunu kullanmakt\u0131r. A\u015fa\u011f\u0131daki \u00f6rnek, R&#8217;deki [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11],"tags":[],"class_list":["post-1749","post","type-post","status-publish","format-standard","hentry","category-rehber"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>R - Statorials&#039;da Mallows Cp nas\u0131l hesaplan\u0131r<\/title>\n<meta name=\"description\" content=\"Bu e\u011fitimde R&#039;de Mallows Cp&#039;nin nas\u0131l hesaplanaca\u011f\u0131 ad\u0131m ad\u0131m bir \u00f6rnekle a\u00e7\u0131klanmaktad\u0131r.\" \/>\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\/tr\/r-cinsinden-mor-cp-nasil-hesaplanir\/\" \/>\n<meta property=\"og:locale\" content=\"tr_TR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"R - Statorials&#039;da Mallows Cp nas\u0131l hesaplan\u0131r\" \/>\n<meta property=\"og:description\" content=\"Bu e\u011fitimde R&#039;de Mallows Cp&#039;nin nas\u0131l hesaplanaca\u011f\u0131 ad\u0131m ad\u0131m bir \u00f6rnekle a\u00e7\u0131klanmaktad\u0131r.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/tr\/r-cinsinden-mor-cp-nasil-hesaplanir\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-25T03:40:00+00:00\" \/>\n<meta name=\"author\" content=\"Dr.benjamin anderson\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Yazan:\" \/>\n\t<meta name=\"twitter:data1\" content=\"Dr.benjamin anderson\" \/>\n\t<meta name=\"twitter:label2\" content=\"Tahmini okuma s\u00fcresi\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 dakika\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/statorials.org\/tr\/r-cinsinden-mor-cp-nasil-hesaplanir\/\",\"url\":\"https:\/\/statorials.org\/tr\/r-cinsinden-mor-cp-nasil-hesaplanir\/\",\"name\":\"R - Statorials&#39;da Mallows Cp nas\u0131l hesaplan\u0131r\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/tr\/#website\"},\"datePublished\":\"2023-07-25T03:40:00+00:00\",\"dateModified\":\"2023-07-25T03:40:00+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/tr\/#\/schema\/person\/365dc158a39a7c8ae256355451e3de48\"},\"description\":\"Bu e\u011fitimde R&#39;de Mallows Cp&#39;nin nas\u0131l hesaplanaca\u011f\u0131 ad\u0131m ad\u0131m bir \u00f6rnekle a\u00e7\u0131klanmaktad\u0131r.\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/tr\/r-cinsinden-mor-cp-nasil-hesaplanir\/#breadcrumb\"},\"inLanguage\":\"tr\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/tr\/r-cinsinden-mor-cp-nasil-hesaplanir\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/tr\/r-cinsinden-mor-cp-nasil-hesaplanir\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Ev\",\"item\":\"https:\/\/statorials.org\/tr\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"R&#39;de mor &#39;cp nas\u0131l hesaplan\u0131r?\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/statorials.org\/tr\/#website\",\"url\":\"https:\/\/statorials.org\/tr\/\",\"name\":\"Statorials\",\"description\":\"\u0130statistik okuryazarl\u0131\u011f\u0131 rehberiniz!\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/statorials.org\/tr\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"tr\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/statorials.org\/tr\/#\/schema\/person\/365dc158a39a7c8ae256355451e3de48\",\"name\":\"Dr.benjamin anderson\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"tr\",\"@id\":\"https:\/\/statorials.org\/tr\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/statorials.org\/tr\/wp-content\/uploads\/2023\/10\/Dr.-Benjamin-Anderson-96x96.jpg\",\"contentUrl\":\"https:\/\/statorials.org\/tr\/wp-content\/uploads\/2023\/10\/Dr.-Benjamin-Anderson-96x96.jpg\",\"caption\":\"Dr.benjamin anderson\"},\"description\":\"Merhaba, ben Benjamin, emekli bir istatistik profes\u00f6r\u00fc ve Statorials \u00f6\u011fretmenine d\u00f6n\u00fc\u015ft\u00fcm. \u0130statistik alan\u0131ndaki kapsaml\u0131 deneyimim ve uzmanl\u0131\u011f\u0131mla, \u00f6\u011frencilerimi Statorials arac\u0131l\u0131\u011f\u0131yla g\u00fc\u00e7lendirmek i\u00e7in bilgilerimi payla\u015fmaya can at\u0131yorum. 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