{"id":3410,"date":"2024-09-08T23:46:50","date_gmt":"2024-09-08T23:46:50","guid":{"rendered":"https:\/\/www.vipservis.com\/blog\/?p=3410"},"modified":"2024-09-08T23:46:50","modified_gmt":"2024-09-08T23:46:50","slug":"tf-idf-nedir","status":"publish","type":"post","link":"https:\/\/www.vipservis.com\/blog\/tf-idf-nedir\/","title":{"rendered":"TF IDF Nedir?"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_79_2 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">\u0130\u00e7indekiler<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #ff0f0f;color:#ff0f0f\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #ff0f0f;color:#ff0f0f\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.vipservis.com\/blog\/tf-idf-nedir\/#TF-IDF_Nedir\" >TF-IDF Nedir?<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.vipservis.com\/blog\/tf-idf-nedir\/#TF_Term_Frequency_%E2%80%93_Terim_Frekansi\" >TF (Term Frequency) &#8211; Terim Frekans\u0131<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.vipservis.com\/blog\/tf-idf-nedir\/#IDF_Inverse_Document_Frequency_%E2%80%93_Ters_Dokuman_Frekansi\" >IDF (Inverse Document Frequency) &#8211; Ters Dok\u00fcman Frekans\u0131<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.vipservis.com\/blog\/tf-idf-nedir\/#TF-IDF_Skoru_Nasil_Hesaplanir\" >TF-IDF Skoru Nas\u0131l Hesaplan\u0131r?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.vipservis.com\/blog\/tf-idf-nedir\/#TF-IDF_Nerelerde_Kullanilir\" >TF-IDF Nerelerde Kullan\u0131l\u0131r?<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h3><span class=\"ez-toc-section\" id=\"TF-IDF_Nedir\"><\/span>TF-IDF Nedir?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>TF-IDF (Term Frequency &#8211; Inverse Document Frequency)<\/strong>, bir metin i\u00e7erisindeki kelimelerin \u00f6nemini \u00f6l\u00e7en ve \u00f6zellikle bilgi alma (information retrieval) ve metin madencili\u011fi gibi alanlarda yayg\u0131n olarak kullan\u0131lan bir istatistiksel y\u00f6ntemdir. Arama motorlar\u0131n\u0131n, makine \u00f6\u011frenimi modellerinin ve do\u011fal dil i\u015fleme (NLP) uygulamalar\u0131n\u0131n, metin i\u00e7indeki \u00f6nemli anahtar kelimeleri belirlemek i\u00e7in TF-IDF y\u00f6nteminden faydaland\u0131\u011f\u0131n\u0131 s\u00f6yleyebiliriz.<\/p>\n<h4><span class=\"ez-toc-section\" id=\"TF_Term_Frequency_%E2%80%93_Terim_Frekansi\"><\/span><strong>TF (Term Frequency) &#8211; Terim Frekans\u0131<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p>TF, bir terimin bir dok\u00fcmanda ka\u00e7 kez ge\u00e7ti\u011fini g\u00f6sterir. Bu sayede, metinde s\u0131k\u00e7a tekrarlanan kelimelerin \u00f6ne \u00e7\u0131kmas\u0131 sa\u011flan\u0131r.<\/p>\n<ul>\n<li><strong>\u00d6rnek<\/strong>: E\u011fer bir kelime bir dok\u00fcmanda 10 kez ge\u00e7iyorsa ve toplam kelime say\u0131s\u0131 100 ise, bu kelimenin terim frekans\u0131 (TF) 0.1 olacakt\u0131r.<\/li>\n<\/ul>\n<p>Form\u00fcl\u00fc:<\/p>\n<div class=\"dark bg-gray-950 contain-inline-size rounded-md border-[0.5px] border-token-border-medium relative\">\n<div class=\"overflow-y-auto p-4\" dir=\"ltr\"><code class=\"!whitespace-pre hljs language-scss\">TF = (Kelimenin Belirli Bir Dok\u00fcmandaki Ge\u00e7i\u015f Say\u0131s\u0131) \/ (Dok\u00fcmandaki Toplam Kelime Say\u0131s\u0131)<br \/>\n<\/code><\/div>\n<\/div>\n<h4><span class=\"ez-toc-section\" id=\"IDF_Inverse_Document_Frequency_%E2%80%93_Ters_Dokuman_Frekansi\"><\/span><strong>IDF (Inverse Document Frequency) &#8211; Ters Dok\u00fcman Frekans\u0131<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p>IDF, bir terimin ka\u00e7 dok\u00fcmanda yer ald\u0131\u011f\u0131n\u0131 g\u00f6sterir ve \u00e7ok yayg\u0131n terimlerin etkisini azaltmay\u0131 ama\u00e7lar. Yani, nadir kelimeler daha y\u00fcksek IDF de\u011ferine sahip olur ve daha \u00f6nemli kabul edilir.<\/p>\n<ul>\n<li><strong>\u00d6rnek<\/strong>: &#8220;ve&#8221;, &#8220;bir&#8221;, &#8220;de&#8221; gibi s\u0131k\u00e7a ge\u00e7en kelimeler t\u00fcm dok\u00fcmanlarda ge\u00e7ti\u011fi i\u00e7in bunlar\u0131n IDF de\u011feri d\u00fc\u015f\u00fck olacakt\u0131r.<\/li>\n<\/ul>\n<p>Form\u00fcl\u00fc:<\/p>\n<div class=\"dark bg-gray-950 contain-inline-size rounded-md border-[0.5px] border-token-border-medium relative\">\n<div class=\"overflow-y-auto p-4\" dir=\"ltr\"><code class=\"!whitespace-pre hljs language-arduino\">IDF = <span class=\"hljs-built_in\">log<\/span> (Toplam Dok\u00fcman Say\u0131s\u0131 \/ Kelimenin Ge\u00e7ti\u011fi Dok\u00fcman Say\u0131s\u0131)<br \/>\n<\/code><\/div>\n<\/div>\n<h4><span class=\"ez-toc-section\" id=\"TF-IDF_Skoru_Nasil_Hesaplanir\"><\/span><strong>TF-IDF Skoru Nas\u0131l Hesaplan\u0131r?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p>TF-IDF, bir kelimenin belirli bir dok\u00fcmandaki g\u00f6receli \u00f6nemini belirlemek i\u00e7in TF ve IDF de\u011ferlerini birle\u015ftirir. Bir kelimenin hem bir dok\u00fcmanda s\u0131k\u00e7a ge\u00e7mesi hem de di\u011fer dok\u00fcmanlarda nadiren g\u00f6r\u00fclmesi, o kelimenin dok\u00fcman i\u00e7in \u00f6nemli oldu\u011fu anlam\u0131na gelir.<\/p>\n<p>Form\u00fcl\u00fc:<\/p>\n<div class=\"dark bg-gray-950 contain-inline-size rounded-md border-[0.5px] border-token-border-medium relative\">\n<div class=\"overflow-y-auto p-4\" dir=\"ltr\"><code class=\"!whitespace-pre hljs\">TF-IDF = TF * IDF<br \/>\n<\/code><\/div>\n<\/div>\n<p>Bu y\u00f6ntem, hem bir kelimenin bir dok\u00fcmandaki s\u0131kl\u0131\u011f\u0131n\u0131 hem de o kelimenin genel dok\u00fcman k\u00fcmesindeki yayg\u0131nl\u0131\u011f\u0131n\u0131 hesaba katar. B\u00f6ylece, s\u0131k kullan\u0131lan ama \u00f6nemsiz kelimelerin etkisi azalt\u0131l\u0131r ve dok\u00fcman i\u00e7in daha \u00f6nemli kelimeler \u00f6ne \u00e7\u0131kar.<\/p>\n<h4><span class=\"ez-toc-section\" id=\"TF-IDF_Nerelerde_Kullanilir\"><\/span><strong>TF-IDF Nerelerde Kullan\u0131l\u0131r?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h4>\n<ul>\n<li><strong>Arama Motorlar\u0131<\/strong>: Web sayfalar\u0131n\u0131 s\u0131ralarken anahtar kelimenin sayfadaki \u00f6nemini anlamak i\u00e7in TF-IDF kullan\u0131l\u0131r.<\/li>\n<li><strong>Dok\u00fcman Benzerli\u011fi<\/strong>: \u0130ki dok\u00fcman aras\u0131ndaki benzerlik TF-IDF skorlar\u0131na dayal\u0131 olarak hesaplanabilir.<\/li>\n<li><strong>\u00d6z\u00fctleme (Summarization)<\/strong>: Metnin \u00f6zetini \u00e7\u0131kartmak i\u00e7in \u00f6nemli kelimeleri ve c\u00fcmleleri belirlemek i\u00e7in kullan\u0131labilir.<\/li>\n<li><strong>Spam Tespiti<\/strong>: Bir e-posta veya metnin spam olup olmad\u0131\u011f\u0131n\u0131 anlamak i\u00e7in kelime s\u0131kl\u0131klar\u0131n\u0131 analiz ederken TF-IDF kullan\u0131labilir.<\/li>\n<\/ul>\n<p>TF-IDF, metin madencili\u011fi ve bilgi alma s\u00fcre\u00e7lerinde anahtar kelimelerin \u00f6nemini \u00f6l\u00e7en etkili bir y\u00f6ntemdir. Bu sayede, hem s\u0131k\u00e7a kullan\u0131lan ama anlams\u0131z kelimelerden uzak durulmu\u015f olur hem de nadiren ge\u00e7en, ancak dok\u00fcman i\u00e7in \u00f6nemli olan kelimeler \u00f6n plana \u00e7\u0131kar\u0131l\u0131r.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>TF-IDF Nedir? TF-IDF (Term Frequency &#8211; Inverse Document Frequency), bir metin i\u00e7erisindeki kelimelerin \u00f6nemini \u00f6l\u00e7en ve \u00f6zellikle bilgi alma (information retrieval) ve metin madencili\u011fi gibi alanlarda yayg\u0131n olarak kullan\u0131lan bir istatistiksel y\u00f6ntemdir. Arama motorlar\u0131n\u0131n, makine \u00f6\u011frenimi modellerinin ve do\u011fal dil i\u015fleme (NLP) uygulamalar\u0131n\u0131n, metin i\u00e7indeki \u00f6nemli anahtar kelimeleri belirlemek i\u00e7in TF-IDF y\u00f6nteminden faydaland\u0131\u011f\u0131n\u0131 s\u00f6yleyebiliriz. TF [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":2141,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[9042,9058,9046,6640,536,9040,3227,9055,9059,9044,9039,9049,9057,9041,9038,9048,9050,9043,9047,9054,9037,9052,9060,9053,9056,9045,9051],"class_list":["post-3410","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-genel","tag-anahtar-kelime-analizi","tag-anahtar-kelime-sikligi","tag-anahtar-kelime-siralamasi","tag-arama-motorlari","tag-arama-motoru-optimizasyonu","tag-bilgi-alma","tag-dogal-dil-isleme","tag-dogal-dil-isleme-tf-idf","tag-dokuman-benzerligi","tag-dokuman-frekansi","tag-inverse-document-frequency","tag-inverse-document-frequency-nedir","tag-metin-analizi","tag-metin-madenciligi","tag-term-frequency","tag-term-frequency-nedir","tag-tf-idf-algoritmasi","tag-tf-idf-hesaplama","tag-tf-idf-nasil-calisir","tag-tf-idf-ne-ise-yarar","tag-tf-idf-nedir","tag-tf-idf-ornegi","tag-tf-idf-ornek-kod","tag-tf-idf-seo","tag-tf-idf-skorlari","tag-tf-idf-skoru","tag-tf-idf-uygulamalari"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>TF IDF Nedir? - Vipservis Blog<\/title>\n<meta name=\"description\" content=\"TF-IDF nedir? 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