{"id":1576,"date":"2023-07-25T19:42:15","date_gmt":"2023-07-25T19:42:15","guid":{"rendered":"https:\/\/statorials.org\/tr\/rde-matris-karisikligi\/"},"modified":"2023-07-25T19:42:15","modified_gmt":"2023-07-25T19:42:15","slug":"rde-matris-karisikligi","status":"publish","type":"post","link":"https:\/\/statorials.org\/tr\/rde-matris-karisikligi\/","title":{"rendered":"R'de kar\u0131\u015f\u0131kl\u0131k matrisi nas\u0131l olu\u015fturulur (ad\u0131m ad\u0131m)"},"content":{"rendered":"

<\/p>\n

\n

Lojistik regresyon<\/a> , yan\u0131t de\u011fi\u015fkeni ikili oldu\u011funda kullanabilece\u011fimiz bir regresyon t\u00fcr\u00fcd\u00fcr.<\/span><\/p>\n

Lojistik regresyon modelinin kalitesini de\u011ferlendirmenin yayg\u0131n bir yolu, modelin tahmin edilen de\u011ferleri ile test veri k\u00fcmesinin ger\u00e7ek de\u011ferlerini g\u00f6steren 2×2’lik bir tablo olan bir kar\u0131\u015f\u0131kl\u0131k matrisi<\/strong> olu\u015fturmakt\u0131r.<\/span> <\/p>\n

\"\"<\/p>\n

A\u015fa\u011f\u0131daki ad\u0131m ad\u0131m \u00f6rnek, R’de bir kar\u0131\u015f\u0131kl\u0131k matrisinin nas\u0131l olu\u015fturulaca\u011f\u0131n\u0131 g\u00f6sterir.<\/span><\/p>\n

Ad\u0131m 1: Lojistik regresyon modelini yerle\u015ftirin<\/strong><\/span><\/h3>\n

Bu \u00f6rnek i\u00e7in ISLR<\/strong> paketindeki varsay\u0131lan<\/strong> veri k\u00fcmesini kullanaca\u011f\u0131z. Belirli bir ki\u015finin kredisini \u00f6deyememe olas\u0131l\u0131\u011f\u0131n\u0131 tahmin etmek i\u00e7in \u00f6\u011frenci durumunu, banka bakiyesini ve y\u0131ll\u0131k geliri kullanaca\u011f\u0131z.<\/span><\/p>\n

A\u015fa\u011f\u0131daki kod, lojistik regresyon modelinin bu veri k\u00fcmesine nas\u0131l s\u0131\u011fd\u0131r\u0131laca\u011f\u0131n\u0131 g\u00f6sterir:<\/span><\/p>\n

 #load necessary packages\n<\/span>library<\/span> (caret)\nlibrary<\/span> (InformationValue)\nlibrary<\/span> (ISLR)\n\n#load dataset\n<\/span>data <-Default\n\n#split dataset into training and testing set\n<\/span>set. seeds<\/span> (1)\nsample <- sample(c(TRUE, FALSE), nrow(data), replace= TRUE<\/span> , prob=c(0.7,0.3))\ntrain <- data[sample, ]\ntest <- data[!sample, ]\n\n#fit logistic regression model\n<\/span>model <- glm(default~student+balance+income, family=\" binomial<\/span> \", data=train)\n<\/strong><\/pre>\n
 Ad\u0131m 2: Kar\u0131\u015f\u0131kl\u0131k Matrisini Olu\u015fturun<\/strong><\/span><\/h3>\n
 Daha sonra, bir kar\u0131\u015f\u0131kl\u0131k matrisi olu\u015fturmak i\u00e7in caret<\/strong> paketindeki ConfusedMatrix()<\/strong> fonksiyonunu kullanaca\u011f\u0131z:<\/span><\/p>\n
 #use model to predict probability of default\npredicted <- predict(model, test, type=\"response\")\n<\/span>\n#convert defaults from \"Yes\" and \"No\" to 1's and 0's\ntest$default <- ifelse(test$default==\" Yes<\/span> \", 1, 0)\n<\/span>\n#find optimal cutoff probability to use to maximize accuracy\noptimal <- optimalCutoff(test$default, predicted)[1]\n<\/span>\n#create confusion matrix\nconfusionMatrix(test$default, predicted)\n\n     0 1\n0 2912 64\n1 21 39\n<\/span><\/span><\/strong><\/pre>\n
 3. Ad\u0131m: Kar\u0131\u015f\u0131kl\u0131k matrisini de\u011ferlendirin<\/strong><\/span><\/h3>\n
 Kar\u0131\u015f\u0131kl\u0131k matrisini kullanarak a\u015fa\u011f\u0131daki metrikleri de hesaplayabiliriz:<\/span><\/p>\n
    \n
  •  Duyarl\u0131l\u0131k:<\/strong> “Ger\u00e7ek pozitiflik oran\u0131” – modelin do\u011fru \u015fekilde tahmin etti\u011fi bireylerin temerr\u00fcde d\u00fc\u015fecek y\u00fczdesi.<\/span><\/li>\n
  •  \u00d6zg\u00fcll\u00fck:<\/strong> “Ger\u00e7ek negatif oran” – modelin do\u011fru \u015fekilde tahmin etti\u011fi bireylerin temerr\u00fcde d\u00fc\u015fmeyecek<\/em> y\u00fczdesi.<\/span><\/li>\n
  •  Toplam yanl\u0131\u015f s\u0131n\u0131fland\u0131rma oran\u0131:<\/strong> Model taraf\u0131ndan yap\u0131lan toplam yanl\u0131\u015f s\u0131n\u0131fland\u0131rmalar\u0131n y\u00fczdesi.<\/span><\/li>\n<\/ul>\n
     A\u015fa\u011f\u0131daki kod bu metriklerin nas\u0131l hesaplanaca\u011f\u0131n\u0131 g\u00f6sterir:<\/span><\/p>\n
     #calculate sensitivity<\/span>\nsensitivity(test$default, predicted)\n\n[1] 0.3786408\n\n#calculate specificity\n<\/span>specificity(test$default, predicted)\n\n[1] 0.9928401\n\n#calculate total misclassification error rate\n<\/span>misClassError(test$default, predicted, threshold<\/span> =optimal)\n\n[1] 0.027<\/strong><\/span><\/pre>\n
     Bu model i\u00e7in toplam s\u0131n\u0131fland\u0131rma hatas\u0131 oran\u0131 %2,7’dir<\/strong> .<\/span><\/p>\n
     Genel olarak bu oran ne kadar d\u00fc\u015f\u00fck olursa model sonu\u00e7lar\u0131 o kadar iyi tahmin edebilir. Dolay\u0131s\u0131yla bu \u00f6zel modelin, bir bireyin temerr\u00fcde d\u00fc\u015f\u00fcp d\u00fc\u015fmeyece\u011fini tahmin etmede \u00e7ok etkili oldu\u011fu kan\u0131tlanm\u0131\u015ft\u0131r.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"
    Lojistik regresyon , yan\u0131t de\u011fi\u015fkeni ikili oldu\u011funda kullanabilece\u011fimiz bir regresyon t\u00fcr\u00fcd\u00fcr. Lojistik regresyon modelinin kalitesini de\u011ferlendirmenin yayg\u0131n bir yolu, modelin tahmin edilen de\u011ferleri ile test veri k\u00fcmesinin ger\u00e7ek de\u011ferlerini g\u00f6steren 2×2’lik bir tablo olan bir kar\u0131\u015f\u0131kl\u0131k matrisi olu\u015fturmakt\u0131r. A\u015fa\u011f\u0131daki ad\u0131m ad\u0131m \u00f6rnek, R’de bir kar\u0131\u015f\u0131kl\u0131k matrisinin nas\u0131l olu\u015fturulaca\u011f\u0131n\u0131 g\u00f6sterir. Ad\u0131m 1: Lojistik regresyon modelini yerle\u015ftirin […]<\/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-1576","post","type-post","status-publish","format-standard","hentry","category-rehber"],"yoast_head":"\nR'de Kar\u0131\u015f\u0131kl\u0131k Matrisi Nas\u0131l Olu\u015fturulur (Ad\u0131m Ad\u0131m)<\/title>\n<meta name=\"description\" content=\"Bu e\u011fitimde, ad\u0131m ad\u0131m bir \u00f6rnek de dahil olmak \u00fczere R'de bir kar\u0131\u015f\u0131kl\u0131k matrisinin nas\u0131l olu\u015fturulaca\u011f\u0131 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\/rde-matris-karisikligi\/\" \/>\n<meta property=\"og:locale\" content=\"tr_TR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"R'de Kar\u0131\u015f\u0131kl\u0131k Matrisi Nas\u0131l Olu\u015fturulur (Ad\u0131m Ad\u0131m)\" \/>\n<meta property=\"og:description\" content=\"Bu e\u011fitimde, ad\u0131m ad\u0131m bir \u00f6rnek de dahil olmak \u00fczere R'de bir kar\u0131\u015f\u0131kl\u0131k matrisinin nas\u0131l olu\u015fturulaca\u011f\u0131 a\u00e7\u0131klanmaktad\u0131r.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/tr\/rde-matris-karisikligi\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-25T19:42:15+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/confusionr1.png\" \/>\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=\"2 dakika\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/statorials.org\/tr\/rde-matris-karisikligi\/\",\"url\":\"https:\/\/statorials.org\/tr\/rde-matris-karisikligi\/\",\"name\":\"R'de Kar\u0131\u015f\u0131kl\u0131k Matrisi Nas\u0131l Olu\u015fturulur (Ad\u0131m Ad\u0131m)\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/tr\/#website\"},\"datePublished\":\"2023-07-25T19:42:15+00:00\",\"dateModified\":\"2023-07-25T19:42:15+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/tr\/#\/schema\/person\/365dc158a39a7c8ae256355451e3de48\"},\"description\":\"Bu e\u011fitimde, ad\u0131m ad\u0131m bir \u00f6rnek de dahil olmak \u00fczere R'de bir kar\u0131\u015f\u0131kl\u0131k matrisinin nas\u0131l olu\u015fturulaca\u011f\u0131 a\u00e7\u0131klanmaktad\u0131r.\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/tr\/rde-matris-karisikligi\/#breadcrumb\"},\"inLanguage\":\"tr\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/tr\/rde-matris-karisikligi\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/tr\/rde-matris-karisikligi\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Ev\",\"item\":\"https:\/\/statorials.org\/tr\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"R'de kar\u0131\u015f\u0131kl\u0131k matrisi nas\u0131l olu\u015fturulur (ad\u0131m ad\u0131m)\"}]},{\"@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. Daha fazlas\u0131n\u0131 bil\",\"sameAs\":[\"https:\/\/statorials.org\/tr\"]}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"R'de Kar\u0131\u015f\u0131kl\u0131k Matrisi Nas\u0131l Olu\u015fturulur (Ad\u0131m Ad\u0131m)","description":"Bu e\u011fitimde, ad\u0131m ad\u0131m bir \u00f6rnek de dahil olmak \u00fczere R'de bir kar\u0131\u015f\u0131kl\u0131k matrisinin nas\u0131l olu\u015fturulaca\u011f\u0131 a\u00e7\u0131klanmaktad\u0131r.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/statorials.org\/tr\/rde-matris-karisikligi\/","og_locale":"tr_TR","og_type":"article","og_title":"R'de Kar\u0131\u015f\u0131kl\u0131k Matrisi Nas\u0131l Olu\u015fturulur (Ad\u0131m Ad\u0131m)","og_description":"Bu e\u011fitimde, ad\u0131m ad\u0131m bir \u00f6rnek de dahil olmak \u00fczere R'de bir kar\u0131\u015f\u0131kl\u0131k matrisinin nas\u0131l olu\u015fturulaca\u011f\u0131 a\u00e7\u0131klanmaktad\u0131r.","og_url":"https:\/\/statorials.org\/tr\/rde-matris-karisikligi\/","og_site_name":"Statorials","article_published_time":"2023-07-25T19:42:15+00:00","og_image":[{"url":"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/confusionr1.png"}],"author":"Dr.benjamin anderson","twitter_card":"summary_large_image","twitter_misc":{"Yazan:":"Dr.benjamin anderson","Tahmini okuma s\u00fcresi":"2 dakika"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/statorials.org\/tr\/rde-matris-karisikligi\/","url":"https:\/\/statorials.org\/tr\/rde-matris-karisikligi\/","name":"R'de Kar\u0131\u015f\u0131kl\u0131k Matrisi Nas\u0131l Olu\u015fturulur (Ad\u0131m Ad\u0131m)","isPartOf":{"@id":"https:\/\/statorials.org\/tr\/#website"},"datePublished":"2023-07-25T19:42:15+00:00","dateModified":"2023-07-25T19:42:15+00:00","author":{"@id":"https:\/\/statorials.org\/tr\/#\/schema\/person\/365dc158a39a7c8ae256355451e3de48"},"description":"Bu e\u011fitimde, ad\u0131m ad\u0131m bir \u00f6rnek de dahil olmak \u00fczere R'de bir kar\u0131\u015f\u0131kl\u0131k matrisinin nas\u0131l olu\u015fturulaca\u011f\u0131 a\u00e7\u0131klanmaktad\u0131r.","breadcrumb":{"@id":"https:\/\/statorials.org\/tr\/rde-matris-karisikligi\/#breadcrumb"},"inLanguage":"tr","potentialAction":[{"@type":"ReadAction","target":["https:\/\/statorials.org\/tr\/rde-matris-karisikligi\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/statorials.org\/tr\/rde-matris-karisikligi\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Ev","item":"https:\/\/statorials.org\/tr\/"},{"@type":"ListItem","position":2,"name":"R'de kar\u0131\u015f\u0131kl\u0131k matrisi nas\u0131l olu\u015fturulur (ad\u0131m ad\u0131m)"}]},{"@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. Daha fazlas\u0131n\u0131 bil","sameAs":["https:\/\/statorials.org\/tr"]}]}},"yoast_meta":{"yoast_wpseo_title":"","yoast_wpseo_metadesc":"","yoast_wpseo_canonical":""},"_links":{"self":[{"href":"https:\/\/statorials.org\/tr\/wp-json\/wp\/v2\/posts\/1576","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/statorials.org\/tr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/statorials.org\/tr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/statorials.org\/tr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/statorials.org\/tr\/wp-json\/wp\/v2\/comments?post=1576"}],"version-history":[{"count":0,"href":"https:\/\/statorials.org\/tr\/wp-json\/wp\/v2\/posts\/1576\/revisions"}],"wp:attachment":[{"href":"https:\/\/statorials.org\/tr\/wp-json\/wp\/v2\/media?parent=1576"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/statorials.org\/tr\/wp-json\/wp\/v2\/categories?post=1576"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/statorials.org\/tr\/wp-json\/wp\/v2\/tags?post=1576"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}