Hemen bir \u00f6nceki \u0130nce i\u015fler 4 bkz., https:\/\/blog.metu.edu.tr\/caglart\/2026\/06\/19\/ince-isler-4\/ yaz\u0131m\u0131zda “yerel tepe (\u2018local maximum\u2019)” ve “yerel dip (\u2018local minimum\u2019)” ifadeleri mevcut. Ayn\u0131 ifadeleri y\u0131llard\u0131r pek \u00e7ok herkese a\u00e7\u0131k (‘public’) ve ki\u015fiye\/kuruma \u00f6zel (‘under contract’) makalelerimde de kullanm\u0131\u015ft\u0131m. Ne ki, hi\u00e7 uyar\u0131 almam\u0131\u015ft\u0131m. Ben de d\u00fcn geceye dek fark etmemi\u015ftim ki, o tan\u0131mlar yanl\u0131\u015f! \u015eu nedenlerle:<\/p>\n
1) Verinin periyodu belirtilmedik\u00e7e, yerel tepe veya dip tan\u0131mlanamaz. \u00c7\u00fcnk\u00fc, \u00f6rne\u011fin 5dkk periyotlu zaman serisinde yerel u\u00e7 de\u011ferler (max. ve min.) daha uzun periyotlu \u00f6rne\u011fin 1saat zaman serilerinde g\u00f6r\u00fcnmeyebilir.<\/p>\n
2) S\u00f6z konusu dip ve tepelerin hangi zaman diliminde belirdi\u011fi de belirtilmi\u015f olmal\u0131d\u0131r. \u00c7\u00fcnk\u00fc, herhangi bir periyoda sahip zaman serisinin k\u0131sa bir par\u00e7as\u0131ndaki u\u00e7 de\u011ferler ile, ayn\u0131 dilimin ayn\u0131 uzunluktaki kom\u015fu dilimi de g\u00f6z \u00f6n\u00fcne al\u0131nd\u0131\u011f\u0131ndaki u\u00e7 de\u011ferler ayn\u0131 olmayabilir.<\/p>\n
Hayretlere \u015fay\u00e2n! Hani bir avu\u00e7 leblebiyi a\u011fz\u0131n\u0131za att\u0131\u011f\u0131n\u0131zda sert taneler sona kal\u0131r ya \u00e7i\u011fnerken; mental manada buna \u00e7ok al\u0131\u015fk\u0131n\u0131md\u0131r. Pek \u00e7ok benzeri \u00f6rnek, pek \u00e7ok kez gece yast\u0131\u011fa ba\u015f koydu\u011fumda ya da g\u00fcnd\u00fcz g\u00f6z\u00fcyle de kafama dank edivermi\u015ftir. Ama, \u015fimdiye dek hi\u00e7 yukar\u0131daki kadar uzun s\u00fcrmemi\u015fti her hangi bir aymazl\u0131\u011f\u0131m.<\/p>\n
Kim bilir, ge\u00e7mi\u015ften s\u00fcregelen daha nice aymazl\u0131klar\u0131m da vard\u0131r.<\/p>\n
Hami\u015f: \u0130\u015fbu \u00f6rnekle, maddi hatalar\u0131n d\u00fczeltilmesi d\u0131\u015f\u0131nda \u00f6nceki yaz\u0131lar\u0131m\u0131zda asla de\u011fi\u015fiklik yap\u0131lmad\u0131\u011f\u0131n\u0131 da notlam\u0131\u015f olay\u0131m.<\/p>\n","protected":false},"excerpt":{"rendered":"
Hemen bir \u00f6nceki \u0130nce i\u015fler 4 bkz., https:\/\/blog.metu.edu.tr\/caglart\/2026\/06\/19\/ince-isler-4\/ yaz\u0131m\u0131zda “yerel tepe (\u2018local maximum\u2019)” ve “yerel dip (\u2018local minimum\u2019)” ifadeleri mevcut. Ayn\u0131 ifadeleri y\u0131llard\u0131r pek \u00e7ok herkese a\u00e7\u0131k (‘public’) ve ki\u015fiye\/kuruma \u00f6zel (‘under contract’) makalelerimde de kullanm\u0131\u015ft\u0131m. Ne ki, hi\u00e7 uyar\u0131 almam\u0131\u015ft\u0131m. Ben de d\u00fcn geceye dek fark etmemi\u015ftim ki, o tan\u0131mlar yanl\u0131\u015f! \u015eu nedenlerle: 1) […]<\/p>\n","protected":false},"author":1425,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[1],"tags":[],"class_list":["post-1688","post","type-post","status-publish","format-standard","hentry","category-genel"],"_links":{"self":[{"href":"https:\/\/blog.metu.edu.tr\/caglart\/wp-json\/wp\/v2\/posts\/1688","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.metu.edu.tr\/caglart\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.metu.edu.tr\/caglart\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.metu.edu.tr\/caglart\/wp-json\/wp\/v2\/users\/1425"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.metu.edu.tr\/caglart\/wp-json\/wp\/v2\/comments?post=1688"}],"version-history":[{"count":0,"href":"https:\/\/blog.metu.edu.tr\/caglart\/wp-json\/wp\/v2\/posts\/1688\/revisions"}],"wp:attachment":[{"href":"https:\/\/blog.metu.edu.tr\/caglart\/wp-json\/wp\/v2\/media?parent=1688"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.metu.edu.tr\/caglart\/wp-json\/wp\/v2\/categories?post=1688"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.metu.edu.tr\/caglart\/wp-json\/wp\/v2\/tags?post=1688"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}