{"id":38027,"date":"2026-01-21T16:31:48","date_gmt":"2026-01-21T13:31:48","guid":{"rendered":"https:\/\/fatihsoysal.com\/blog\/dogrulama-kumesi-vs-test-kumesi-deneme-sinavlarinin-sampiyonu-gercek-sinavda-neden-basarisiz-oldu\/"},"modified":"2026-01-21T16:31:48","modified_gmt":"2026-01-21T13:31:48","slug":"dogrulama-kumesi-vs-test-kumesi-deneme-sinavlarinin-sampiyonu-gercek-sinavda-neden-basarisiz-oldu","status":"publish","type":"post","link":"https:\/\/fatihsoysal.com\/blog\/dogrulama-kumesi-vs-test-kumesi-deneme-sinavlarinin-sampiyonu-gercek-sinavda-neden-basarisiz-oldu\/","title":{"rendered":"Do\u011frulama K\u00fcmesi vs Test K\u00fcmesi: Deneme S\u0131navlar\u0131n\u0131n \u015eampiyonu Ger\u00e7ek S\u0131navda Neden Ba\u015far\u0131s\u0131z Oldu?"},"content":{"rendered":"

Do\u011frulama K\u00fcmesi vs Test K\u00fcmesi: Deneme S\u0131navlar\u0131n\u0131n \u015eampiyonu Ger\u00e7ek S\u0131navda Neden Ba\u015far\u0131s\u0131z Oldu?<\/h2>\n

Makine \u00f6\u011frenmesi modelleri geli\u015ftirirken, bir modelin ger\u00e7ek d\u00fcnya verileri \u00fczerindeki performans\u0131n\u0131 do\u011fru bir \u015fekilde de\u011ferlendirmek, projenin ba\u015far\u0131s\u0131 i\u00e7in hayati \u00f6neme sahiptir. T\u0131pk\u0131 deneme s\u0131navlar\u0131nda s\u00fcrekli y\u00fcksek puanlar alan ancak ger\u00e7ek s\u0131navda beklenenin alt\u0131nda kalan bir \u00f6\u011frenci gibi, modeller de e\u011fitim verileri \u00fczerinde m\u00fckemmel sonu\u00e7lar verirken, daha \u00f6nce hi\u00e7 g\u00f6rmedi\u011fi verilerde tamamen farkl\u0131 bir performans sergileyebilir. Bu makalede, bu kritik ayr\u0131m\u0131 anlamak i\u00e7in makine \u00f6\u011frenmesinin iki temel ta\u015f\u0131 olan do\u011frulama k\u00fcmesi (validation set)<\/strong> ve test k\u00fcmesi (test set)<\/strong> kavramlar\u0131n\u0131 derinlemesine inceleyece\u011fiz. Amac\u0131m\u0131z, modellerimizin sadece “ezberci” de\u011fil, ayn\u0131 zamanda “anlay\u0131c\u0131” olmas\u0131n\u0131 sa\u011flamakt\u0131r.<\/p>\n

Makine \u00d6\u011frenmesinde Model De\u011ferlendirme Neden Bu Kadar Kritik?<\/h3>\n

Bir makine \u00f6\u011frenmesi modelinin amac\u0131, \u00f6\u011frendi\u011fi kal\u0131plar\u0131 kullanarak yeni, bilinmeyen veriler \u00fczerinde do\u011fru tahminler yapmakt\u0131r. Bu hedefe ula\u015fmak ve modelin ne kadar iyi genellenebildi\u011fini anlamak, yani e\u011fitim verisi d\u0131\u015f\u0131ndaki verilere ne kadar iyi adapte olabildi\u011fini g\u00f6rmek, geli\u015ftirme s\u00fcrecinin en \u00f6nemli a\u015famalar\u0131ndan biridir.<\/\n<\/p>\n","protected":false},"excerpt":{"rendered":"Makine \u00f6\u011frenmesi modelleri geli\u015ftirirken, bir modelin ger\u00e7ek d\u00fcnya verileri \u00fczerindeki performans\u0131n\u0131 do\u011fru bir \u015fekilde de\u011ferlendirmek, projenin ba…","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"csco_page_header_type":"","csco_page_load_nextpost":"","csco_page_subscribe_form":"","csco_page_contact_form":"","footnotes":""},"categories":[1],"tags":[],"class_list":{"0":"post-38027","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-genel","7":"cs-entry","8":"cs-video-wrap"},"yoast_head":"\nDo\u011frulama K\u00fcmesi vs Test K\u00fcmesi: Deneme S\u0131navlar\u0131n\u0131n \u015eampiyonu Ger\u00e7ek S\u0131navda Neden Ba\u015far\u0131s\u0131z Oldu? - Kodlar\u0131n Gizemli D\u00fcnyas\u0131<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/fatihsoysal.com\/blog\/dogrulama-kumesi-vs-test-kumesi-deneme-sinavlarinin-sampiyonu-gercek-sinavda-neden-basarisiz-oldu\/\" \/>\n<meta property=\"og:locale\" content=\"tr_TR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Do\u011frulama K\u00fcmesi vs Test K\u00fcmesi: Deneme S\u0131navlar\u0131n\u0131n \u015eampiyonu Ger\u00e7ek S\u0131navda Neden Ba\u015far\u0131s\u0131z Oldu?\" \/>\n<meta property=\"og:description\" content=\"Makine \u00f6\u011frenmesi modelleri geli\u015ftirirken, bir modelin ger\u00e7ek d\u00fcnya verileri \u00fczerindeki performans\u0131n\u0131 do\u011fru bir \u015fekilde de\u011ferlendirmek, projenin ba...\" \/>\n<meta property=\"og:url\" content=\"https:\/\/fatihsoysal.com\/blog\/dogrulama-kumesi-vs-test-kumesi-deneme-sinavlarinin-sampiyonu-gercek-sinavda-neden-basarisiz-oldu\/\" \/>\n<meta property=\"og:site_name\" content=\"Kodlar\u0131n Gizemli D\u00fcnyas\u0131\" \/>\n<meta property=\"article:published_time\" content=\"2026-01-21T13:31:48+00:00\" \/>\n<meta name=\"author\" content=\"Fatih Soysal\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Yazan:\" \/>\n\t<meta name=\"twitter:data1\" content=\"Fatih Soysal\" \/>\n\t<meta name=\"twitter:label2\" content=\"Tahmini okuma s\u00fcresi\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 dakika\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/fatihsoysal.com\/blog\/dogrulama-kumesi-vs-test-kumesi-deneme-sinavlarinin-sampiyonu-gercek-sinavda-neden-basarisiz-oldu\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/fatihsoysal.com\/blog\/dogrulama-kumesi-vs-test-kumesi-deneme-sinavlarinin-sampiyonu-gercek-sinavda-neden-basarisiz-oldu\/\"},\"author\":{\"name\":\"Fatih Soysal\",\"@id\":\"https:\/\/fatihsoysal.com\/blog\/#\/schema\/person\/002a254750921dcfd568a99e48240dd1\"},\"headline\":\"Do\u011frulama K\u00fcmesi vs Test K\u00fcmesi: Deneme S\u0131navlar\u0131n\u0131n \u015eampiyonu Ger\u00e7ek S\u0131navda Neden Ba\u015far\u0131s\u0131z Oldu?\",\"datePublished\":\"2026-01-21T13:31:48+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/fatihsoysal.com\/blog\/dogrulama-kumesi-vs-test-kumesi-deneme-sinavlarinin-sampiyonu-gercek-sinavda-neden-basarisiz-oldu\/\"},\"wordCount\":239,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/fatihsoysal.com\/blog\/#\/schema\/person\/002a254750921dcfd568a99e48240dd1\"},\"inLanguage\":\"tr\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/fatihsoysal.com\/blog\/dogrulama-kumesi-vs-test-kumesi-deneme-sinavlarinin-sampiyonu-gercek-sinavda-neden-basarisiz-oldu\/#respond\"]}],\"copyrightYear\":\"2026\",\"copyrightHolder\":{\"@id\":\"https:\/\/fatihsoysal.com\/blog\/#organization\"}},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/fatihsoysal.com\/blog\/dogrulama-kumesi-vs-test-kumesi-deneme-sinavlarinin-sampiyonu-gercek-sinavda-neden-basarisiz-oldu\/\",\"url\":\"https:\/\/fatihsoysal.com\/blog\/dogrulama-kumesi-vs-test-kumesi-deneme-sinavlarinin-sampiyonu-gercek-sinavda-neden-basarisiz-oldu\/\",\"name\":\"Do\u011frulama K\u00fcmesi vs Test K\u00fcmesi: Deneme S\u0131navlar\u0131n\u0131n \u015eampiyonu Ger\u00e7ek S\u0131navda Neden Ba\u015far\u0131s\u0131z Oldu? 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