{"id":160,"date":"2020-03-10T15:09:15","date_gmt":"2020-03-10T14:09:15","guid":{"rendered":"https:\/\/magneticideas.cz\/?p=160"},"modified":"2020-12-03T09:13:39","modified_gmt":"2020-12-03T08:13:39","slug":"kvalita-dat-jako-krevni-obraz-spolecnosti","status":"publish","type":"post","link":"https:\/\/magneticideas.cz\/en\/kvalita-dat-jako-krevni-obraz-spolecnosti\/","title":{"rendered":"Kvalita dat jako krevn\u00ed obraz spole\u010dnosti"},"content":{"rendered":"\r\n

Jen t\u011b\u017eko byste na\u0161li firmu, kde si nikdo nikdy nest\u011b\u017eoval na data. Samoz\u0159ejm\u011b! Ostatn\u011b kolem pr\u00e1ce s daty se vytvo\u0159ilo hned cel\u00e9 odv\u011btv\u00ed. Co se vlastn\u011b d\u011bje, kdy\u017e data stoj\u00ed \u201eza starou ba\u010dkoru\u201c? S velkou pompou se oby\u010dejn\u011b nastartuje projekt, p\u0159\u00edpadn\u011b se najme konzultantsk\u00e1 firma a provede se rozs\u00e1hl\u00e9 \u010di\u0161t\u011bn\u00ed dat. K velk\u00e9mu p\u0159ekvapen\u00ed se ale po p\u00e1r m\u011bs\u00edc\u00edch zjist\u00ed, \u017ee v datech je u\u017e zase nepo\u0159\u00e1dek (!).<\/p>\r\n\r\n\r\n\r\n

A pro\u010d se tenhle sc\u00e9n\u00e1\u0159 opakuje znovu a znovu? Proto\u017ee v\u011bt\u0161ina takov\u00fdch projekt\u016f vych\u00e1z\u00ed z p\u0159edstavy, \u017ee nekvalitn\u00ed data napadaj\u00ed syst\u00e9my tak n\u011bjak sama od sebe, jako hejna kobylek. V MAGNETIC IDEAS nejsme zast\u00e1nci \u201eteorie kobylek\u201c. Kvalita dat je jako lakmusov\u00fd pap\u00edrek, kter\u00fdm lze snadno zjistit kondici proces\u016f<\/strong>. Je to stejn\u00e9 jako krevn\u00ed obraz. Kdy\u017e v\u00e1m l\u00e9ka\u0159 zjist\u00ed vysok\u00fd krevn\u00ed tlak, tak\u00e9 v\u00e1m nepust\u00ed \u017eilou, ale za\u010dne l\u00e9\u010dit p\u0159\u00ed\u010dinu. S daty je to stejn\u00e9.<\/p>\r\n\r\n\r\n\r\n

Naj\u00edt nekvalitn\u00ed data je snadn\u00e9, prim\u00e1rn\u00edm c\u00edlem je ale naj\u00edt a trvale odstranit p\u0159\u00ed\u010dinu vzniku. Proto by za kvalitu dat nem\u011bl b\u00fdt odpov\u011bdn\u00fd datov\u00fd analytik zb\u011bhl\u00fd v SQL nebo Pythonu, ale sp\u00ed\u0161e vlastn\u00edk procesu, kter\u00fd rozum\u00ed nastaven\u00ed proces\u016f ve spole\u010dnosti a dok\u00e1\u017ee je dostate\u010dn\u011b ovlivnit.<\/p>\r\n\r\n\r\n\r\n

Jak tedy \u0159e\u0161it probl\u00e9my s daty?<\/strong><\/p>\r\n\r\n\r\n\r\n

    \r\n
  1. Je d\u016fle\u017eit\u00e9 se objektivn\u011b pod\u00edvat na data. Nelze se spol\u00e9hat na subjektivn\u00ed post\u0159ehy typu \u201eZ\u00e1kaznick\u00e9 adresy jsou \u0161patn\u011b zadan\u00e9\u201c. Z\u00e1kladn\u00ed (nikoli v\u0161ak jedin\u00e1) metoda je profilov\u00e1n\u00ed dat a identifikace krajn\u00edch hodnot (outliers) nebo vylo\u017een\u00fdch chyb.<\/li>\r\n
  2. D\u00e1le je t\u0159eba zjistit p\u0159\u00ed\u010diny a definice \u201espr\u00e1vnosti\u201c dat. Typick\u00e1 chyba v t\u00e9to f\u00e1zi nast\u00e1v\u00e1, kdy\u017e se \u00fa\u010dastn\u00edci projektu mezi sebou shodnou, jak maj\u00ed spr\u00e1vn\u00e1 data vypadat. To jednodu\u0161e nelze, proto\u017ee data pou\u017e\u00edv\u00e1 cel\u00e1 firma a ka\u017ed\u00fd trochu jinak. Je nutn\u00e9 odstranit nejen \u0161patn\u00e1 data, ale i zabr\u00e1nit jejich dal\u0161\u00ed tvorb\u011b.<\/li>\r\n
  3. Ve t\u0159et\u00edm kroku podnik\u00e1me pr\u00e1v\u011b tyto preven\u010dn\u00ed kroky a \u00fapravy postup\u016f, aby se zamezilo vzniku dal\u0161\u00edch nekvalitn\u00edch dat.<\/li>\r\n
  4. Teprve ve \u010dtvrt\u00e9m kroku m\u016f\u017eeme p\u0159istoupit k \u010di\u0161t\u011bn\u00ed dat.<\/li>\r\n
  5. Nakonec je pot\u0159eba stanovit metriky, podle nich\u017e se bude kvalita dat monitorovat a definovat mezn\u00ed hodnoty, kter\u00e9 p\u0159\u00edpadn\u011b spust\u00ed dal\u0161\u00ed opravnou aktivitu.<\/li>\r\n<\/ol>\r\n\r\n\r\n\r\n

    Zn\u00ed to jednodu\u0161e, \u017ee? Tak si vzpome\u0148te, jak\u00e9 to bylo, kdy\u017e jste naposledy \u0159e\u0161ili probl\u00e9m s daty.<\/p>\r\n\r\n\r\n\r\n

    Autor: Libor Stenzl<\/p>\r\n

    \u010cl\u00e1nek ke sta\u017een\u00ed zde<\/a>.<\/p>\r\n","protected":false},"excerpt":{"rendered":"

    Jen t\u011b\u017eko byste na\u0161li firmu, kde si nikdo nikdy nest\u011b\u017eoval na data.<\/p>\n","protected":false},"author":1,"featured_media":120,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[6],"tags":[],"yoast_head":"\nKvalita dat jako krevn\u00ed obraz spole\u010dnosti - Magnetic Ideas - Pom\u00e1h\u00e1me klient\u016fm r\u016fst<\/title>\n<meta name=\"description\" content=\"Jsme mal\u00fd t\u00fdm zku\u0161en\u00fdch lid\u00ed, pro klienty tvo\u0159\u00edme strategie, zvy\u0161ujeme prodeje, transformujeme, digitalizujeme, rozv\u00edj\u00edme mana\u017eery a energetizujeme t\u00fdmy.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/magneticideas.cz\/en\/kvalita-dat-jako-krevni-obraz-spolecnosti\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Kvalita dat jako krevn\u00ed obraz spole\u010dnosti - 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