{"id":17333,"date":"2025-11-13T13:24:07","date_gmt":"2025-11-13T13:24:07","guid":{"rendered":"https:\/\/undetectable.ai/blog\/?p=17333"},"modified":"2025-12-16T19:15:38","modified_gmt":"2025-12-16T19:15:38","slug":"recenze-plagiatorstvi","status":"publish","type":"post","link":"https:\/\/undetectable.ai/blog\/cs\/recenze-plagiatorstvi\/","title":{"rendered":"Recenze Plagiarisma: Dok\u00e1\u017ee detekovat texty napsan\u00e9 um\u011blou inteligenc\u00ed nebo parafr\u00e1zovan\u00e9 texty?"},"content":{"rendered":"<p>V akademick\u00e9m psan\u00ed je jen m\u00e1lo v\u011bc\u00ed d\u011bsiv\u011bj\u0161\u00edch ne\u017e odevzd\u00e1n\u00ed pr\u00e1ce a n\u00e1sledn\u00fd e-mail od profesora s p\u0159edm\u011btem: \u201cMus\u00edme si promluvit o va\u0161\u00ed pr\u00e1ci.\u201d Najednou se c\u00edt\u00edte vyd\u011b\u0161en\u00ed a zmaten\u00ed.<\/p>\n\n\n\n<p>Ud\u011blal jsi n\u011bco \u0161patn\u011b? Nepou\u017eil jsi um\u011blou inteligenci. Ka\u017ed\u00e9 bolestiv\u011b napsan\u00e9 slovo bylo tv\u00e9 vlastn\u00ed, poh\u00e1n\u011bn\u00e9 Red Bullem a existenci\u00e1ln\u00ed hr\u016fzou.<\/p>\n\n\n\n<p>P\u0159esto va\u0161e univerzita n\u011bjak\u00fdm zp\u016fsobem prov\u011b\u0159ila va\u0161i pr\u00e1ci pomoc\u00ed programu na kontrolu plagi\u00e1t\u016f a zd\u00e1 se, \u017ee jste nyn\u00ed reinkarnac\u00ed George Orwella, nebo je\u0161t\u011b h\u016f\u0159e, robotem.<\/p>\n\n\n\n<p>V\u00edtejte v roce 2025, kdy se kontroly plagi\u00e1t\u016f a detektory um\u011bl\u00e9 inteligence staly soudcem, porotou a katem akademick\u00e9 integrity.<\/p>\n\n\n\n<p>Dnes se pod\u00edv\u00e1me na Plagiarisma pod mikroskopem.<\/p>\n\n\n\n<p>Funguje to skute\u010dn\u011b? Dok\u00e1\u017ee skute\u010dn\u011b rozeznat rozd\u00edl mezi va\u0161imi autentick\u00fdmi p\u016flno\u010dn\u00edmi \u00favahami a vybrou\u0161enou pr\u00f3zou ChatGPT?<\/p>\n\n\n\n<p>V\u00fdsledky mohou b\u00fdt chaoti\u010dt\u011bj\u0161\u00ed, ne\u017e si mysl\u00edte.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p class=\"has-text-align-center\"><strong>Kl\u00ed\u010dov\u00e9 poznatky<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Plagiarisma je bezplatn\u00fd n\u00e1stroj pro kontrolu plagi\u00e1t\u016f, kter\u00fd prohled\u00e1v\u00e1 obsah ve vyhled\u00e1va\u010di Google a v\u011bdeck\u00fdch datab\u00e1z\u00edch.<\/li>\n<\/ul>\n\n\n\n<p><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Testovali jsme jej pomoc\u00ed origin\u00e1ln\u00edch, plagi\u00e1tov\u00fdch a AI generovan\u00fdch textov\u00fdch vzork\u016f.<\/li>\n<\/ul>\n\n\n\n<p><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>P\u016fvodn\u00ed obsah byl ozna\u010den jako jedine\u010dn\u00fd pouze 77% nam\u00edsto 100%.<\/li>\n<\/ul>\n\n\n\n<p><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Zkop\u00edrovan\u00fd text z New York Times se vr\u00e1til jako 68% jedine\u010dn\u00fd, bez zjevn\u00e9ho plagi\u00e1torstv\u00ed.<\/li>\n<\/ul>\n\n\n\n<p><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Text parafr\u00e1zovan\u00fd um\u011blou inteligenc\u00ed byl uzn\u00e1n jako 100% jedine\u010dn\u00fd, zcela nezjistiteln\u00fd.<\/li>\n<\/ul>\n\n\n\n<p><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Plagiarisma m\u00e1 probl\u00e9my s p\u0159esnost\u00ed a spolehlivost\u00ed \u2014 jsou k dispozici lep\u0161\u00ed a p\u0159esn\u011bj\u0161\u00ed alternativy.<\/li>\n<\/ul>\n\n\n\n<p><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Co je to plagi\u00e1torstv\u00ed?<\/h2>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"739\" src=\"https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/11\/Plagiarisma-Homepage-1024x739.jpg\" alt=\"\" class=\"wp-image-17343\" title=\"\" srcset=\"https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/11\/Plagiarisma-Homepage-1024x739.jpg 1024w, https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/11\/Plagiarisma-Homepage-300x216.jpg 300w, https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/11\/Plagiarisma-Homepage-768x554.jpg 768w, https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/11\/Plagiarisma-Homepage-18x12.jpg 18w, https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/11\/Plagiarisma-Homepage.jpg 1246w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/div>\n\n\n<p>Plagiarisma je bezplatn\u00fd online n\u00e1stroj pro kontrolu plagi\u00e1t\u016f, kter\u00fd existuje od po\u010d\u00e1tku roku 2010.<\/p>\n\n\n\n<p>N\u00e1stroj porovn\u00e1v\u00e1 v\u00e1\u0161 text s obsahem indexovan\u00fdm spole\u010dnost\u00ed Google a <a href=\"https:\/\/paperpile.com\/g\/academic-research-databases\/\" target=\"_blank\" rel=\"noreferrer noopener\">r\u016fzn\u00e9 akademick\u00e9 datab\u00e1ze<\/a>.<\/p>\n\n\n\n<p>Podporuje v\u00edce jazyk\u016f, p\u0159ij\u00edm\u00e1 p\u0159\u00edm\u00fd vstup textu nebo nahr\u00e1v\u00e1n\u00ed soubor\u016f a generuje procentu\u00e1ln\u00ed sk\u00f3re jedine\u010dnosti.<\/p>\n\n\n\n<p>\u0160koly a jednotliv\u00ed auto\u0159i jej pou\u017e\u00edvaj\u00ed k ov\u011b\u0159en\u00ed, zda byl obsah zkop\u00edrov\u00e1n z jin\u00e9ho m\u00edsta na internetu.<\/p>\n\n\n\n<p>Ale v\u011bc se m\u00e1 takhle: svoboda s sebou nese ur\u010dit\u00e1 omezen\u00ed.<\/p>\n\n\n\n<p>Rozhran\u00ed vypad\u00e1, jako by bylo navr\u017eeno v dob\u011b MySpace. Proces skenov\u00e1n\u00ed je pomalej\u0161\u00ed ne\u017e va\u0161e babi\u010dka, kter\u00e1 se sna\u017e\u00ed p\u0159ij\u00edt na to, jak funguje TikTok. A jak uvid\u00edme v na\u0161ich testech, p\u0159esnost je p\u0159inejlep\u0161\u00edm sporn\u00e1.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Hlavn\u00ed funkce programu Plagiarisma<\/strong><\/h3>\n\n\n\n<p>Poj\u010fme si rozebrat, co Plagiarisma vlastn\u011b nab\u00edz\u00ed:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Podpora v\u00edce jazyk\u016f<\/strong>: Kontroluje plagi\u00e1ty ve v\u00edce ne\u017e 190 jazyc\u00edch. U\u017eite\u010dn\u00e9, pokud p\u00ed\u0161ete v chorvat\u0161tin\u011b nebo pot\u0159ebujete ov\u011b\u0159it \u0161pan\u011blskou esej.<\/li>\n\n\n\n<li><strong>V\u00edce vyhled\u00e1va\u010d\u016f<\/strong>: Pou\u017e\u00edv\u00e1 Google, Yahoo, Babylon a Google Scholar k porovn\u00e1n\u00ed va\u0161eho textu. V\u00edce zdroj\u016f teoreticky znamen\u00e1 lep\u0161\u00ed detekci.<\/li>\n\n\n\n<li><strong>Mo\u017enosti nahr\u00e1v\u00e1n\u00ed soubor\u016f<\/strong>: P\u0159ij\u00edm\u00e1 prost\u00fd text, soubory PDF, dokumenty Word a dal\u0161\u00ed form\u00e1ty. Nemus\u00edte v\u0161e kop\u00edrovat a vkl\u00e1dat ru\u010dn\u011b.<\/li>\n\n\n\n<li><strong>P\u0159\u00edstup k rozhran\u00ed API<\/strong>: V\u00fdvoj\u00e1\u0159i mohou integrovat Plagiarisma do jin\u00fdch aplikac\u00ed.<\/li>\n\n\n\n<li><strong>Pomoc p\u0159i citov\u00e1n\u00ed<\/strong>: Nab\u00edz\u00ed pomoc s form\u00e1tov\u00e1n\u00edm citac\u00ed, co\u017e je sice fajn, ale nen\u00ed to nutn\u011b d\u016fvod, pro\u010d jste tady.<\/li>\n<\/ul>\n\n\n\n<p>Z\u00e1kladn\u00ed slib je jednoduch\u00fd: vlo\u017ete sv\u016fj obsah, klikn\u011bte na \u201ezkontrolovat\u201c a z\u00edskejte procentu\u00e1ln\u00ed hodnocen\u00ed, kter\u00e9 ukazuje, jak jedine\u010dn\u00fd je v\u00e1\u0161 text. \u010c\u00edm vy\u0161\u0161\u00ed procento, t\u00edm origin\u00e1ln\u011bj\u0161\u00ed obsah.<\/p>\n\n\n\n<p>Ni\u017e\u0161\u00ed procento znamen\u00e1 potenci\u00e1l <a href=\"https:\/\/undetectable.ai\/blog\/how-plagiarism-checkers-work\/\" target=\"_blank\" rel=\"noreferrer noopener\">bylo zji\u0161t\u011bno plagi\u00e1torstv\u00ed<\/a>.<\/p>\n\n\n\n<p>To je alespo\u0148 teorie.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Jak funguje Plagiarisma AI Checker<\/h2>\n\n\n\n<p>Detek\u010dn\u00ed mechanismus Plagiarisma je p\u0159\u00edmo\u010dar\u00fd. T\u00e9m\u011b\u0159 a\u017e p\u0159\u00edli\u0161 p\u0159\u00edmo\u010dar\u00fd.<\/p>\n\n\n\n<p>Vlo\u017e\u00edte sv\u016fj text do kontroln\u00edho n\u00e1stroje. N\u00e1stroj rozd\u011bl\u00ed v\u00e1\u0161 obsah na men\u0161\u00ed \u010d\u00e1sti a fr\u00e1ze.<\/p>\n\n\n\n<p>Pot\u00e9 tyto fr\u00e1ze vyhled\u00e1v\u00e1 v Google, Yahoo a akademick\u00fdch datab\u00e1z\u00edch. Pokud najde shodn\u00fd text jinde, ozna\u010d\u00ed tyto \u010d\u00e1sti jako potenci\u00e1ln\u011b plagi\u00e1t.<\/p>\n\n\n\n<p>Syst\u00e9m generuje procentu\u00e1ln\u00ed sk\u00f3re. Pokud v\u00e1\u0161 obsah vykazuje 85% jedine\u010dn\u00fdch, znamen\u00e1 to, \u017ee 15% se shoduje s existuj\u00edc\u00edmi online zdroji.<\/p>\n\n\n\n<p>N\u00e1stroj zv\u00fdrazn\u00ed ozna\u010den\u00e9 \u010d\u00e1sti a n\u011bkdy poskytuje odkazy na zdroje, kde se podobn\u00fd text objevuje.<\/p>\n\n\n\n<p>Zn\u00ed to rozumn\u011b, \u017ee? Probl\u00e9m je v proveden\u00ed.<\/p>\n\n\n\n<p>Kontrola se do zna\u010dn\u00e9 m\u00edry op\u00edr\u00e1 o <a href=\"https:\/\/www.ibm.com\/docs\/en\/informix-servers\/14.10.0?topic=searches-exact-phrase\" target=\"_blank\" data-type=\"link\" data-id=\"https:\/\/www.ibm.com\/docs\/en\/informix-servers\/14.10.0?topic=searches-exact-phrase\" rel=\"noreferrer noopener\">p\u0159esn\u00e1 shoda fr\u00e1ze<\/a>.<\/p>\n\n\n\n<p>Pokud zm\u011bn\u00edte n\u011bkolik slov nebo p\u0159eskup\u00edte v\u011bty, n\u00e1stroj \u010dasto nedok\u00e1\u017ee plagi\u00e1t zcela odhalit.<\/p>\n\n\n\n<p>Je to jako m\u00edt bezpe\u010dnostn\u00ed str\u00e1\u017e, kter\u00e1 rozpozn\u00e1 pouze zlod\u011bje v ur\u010dit\u00e9m oble\u010den\u00ed. Zm\u011b\u0148te oble\u010den\u00ed a projd\u011bte bez probl\u00e9m\u016f.<\/p>\n\n\n\n<p>To je obzvl\u00e1\u0161t\u011b problematick\u00e9 v roce 2025, kdy n\u00e1stroje pro parafr\u00e1zi zalo\u017een\u00e9 na um\u011bl\u00e9 inteligenci dok\u00e1\u017eou p\u0159epsat cel\u00e9 \u010dl\u00e1nky p\u0159i zachov\u00e1n\u00ed stejn\u00e9ho v\u00fdznamu. Plagiarisma nebyla vytvo\u0159ena pro tuto realitu.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Jak p\u0159esn\u00e1 je um\u011bl\u00e1 inteligence Plagiarisma?<\/h2>\n\n\n\n<p>\u010cas na skute\u010dn\u00fd test. Cht\u011bli jsme v\u011bd\u011bt, zda Plagiarisma skute\u010dn\u011b funguje, a tak jsme vytvo\u0159ili testovac\u00ed metodiku inspirovanou <a href=\"https:\/\/www.zdnet.com\/article\/i-tested-10-ai-content-detectors-and-these-5-correctly-identified-ai-text-every-time\/\" target=\"_blank\" rel=\"noreferrer noopener\">\u0160iroce citovan\u00fd benchmark spole\u010dnosti ZDNet<\/a> pro detektory obsahu AI.<\/p>\n\n\n\n<p>P\u0159ipravili jsme dva typy obsahu:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Origin\u00e1ln\u00ed obsah<\/strong> naps\u00e1no \u010dlov\u011bkem (bez pou\u017eit\u00ed um\u011bl\u00e9 inteligence, bez kop\u00edrov\u00e1n\u00ed)<\/li>\n\n\n\n<li><strong>Plagi\u00e1torsk\u00fd obsah<\/strong> p\u0159\u00edmo z The New York Times<\/li>\n<\/ol>\n\n\n\n<p>Pod\u00edvejme se, co se stalo.<\/p>\n\n\n\n<p><strong>Test 1: Origin\u00e1ln\u00ed obsah<\/strong><\/p>\n\n\n\n<p>Napsali jsme 300 slov dlouh\u00fd odstavec o klimatick\u00fdch zm\u011bn\u00e1ch. Zcela origin\u00e1ln\u00ed. Bez odkaz\u016f, bez pomoci um\u011bl\u00e9 inteligence. Prost\u011b jen lidsk\u00fd text o t\u00e1n\u00ed ledovc\u016f a emis\u00edch uhl\u00edku.<\/p>\n\n\n\n<p>V\u00fdsledek Plagiarisma: <strong>77% jedine\u010dn\u00fd<\/strong>.<\/p>\n\n\n\n<p>Po\u010dkat, co\u017ee? Tento obsah byl 100% origin\u00e1ln\u00ed. Nen\u00ed mo\u017en\u00e9, aby se 23% z n\u011bj objevilo jinde, proto\u017ee jsme ho doslova pr\u00e1v\u011b napsali. P\u0159esto Plagiarisma ozna\u010dilo t\u00e9m\u011b\u0159 \u010dtvrtinu textu jako potenci\u00e1ln\u011b plagi\u00e1t.<\/p>\n\n\n\n<p>Zde je sn\u00edmek obrazovky:<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"692\" src=\"https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/11\/Plagiarisma-Test-Results-Original-Content-1024x692.jpg\" alt=\"\" class=\"wp-image-17344\" title=\"\" srcset=\"https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/11\/Plagiarisma-Test-Results-Original-Content-1024x692.jpg 1024w, https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/11\/Plagiarisma-Test-Results-Original-Content-300x203.jpg 300w, https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/11\/Plagiarisma-Test-Results-Original-Content-768x519.jpg 768w, https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/11\/Plagiarisma-Test-Results-Original-Content-18x12.jpg 18w, https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/11\/Plagiarisma-Test-Results-Original-Content.jpg 1262w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/div>\n\n\n<p><em>V\u00fdsledky testu Plagiarisma \u2013 origin\u00e1ln\u00ed obsah<\/em><\/p>\n\n\n\n<p>To je obrovsk\u00fd varovn\u00fd sign\u00e1l. Fale\u0161n\u00e9 pozitivn\u00ed v\u00fdsledky znamenaj\u00ed, \u017ee nevinn\u00ed lid\u00e9 jsou obvin\u011bni z plagi\u00e1torstv\u00ed.<\/p>\n\n\n\n<p>Studenti \u010del\u00ed disciplin\u00e1rn\u00edm opat\u0159en\u00edm a auto\u0159i ztr\u00e1cej\u00ed d\u016fv\u011bryhodnost, a to v\u0161e proto, \u017ee tento n\u00e1stroj nedok\u00e1\u017ee rozli\u0161it mezi b\u011b\u017en\u00fdmi fr\u00e1zemi a skute\u010dn\u00fdm kop\u00edrov\u00e1n\u00edm.<\/p>\n\n\n\n<p><strong>Test 2: Skute\u010dn\u011b plagi\u00e1tovan\u00fd obsah<\/strong><\/p>\n\n\n\n<p>Pro druh\u00fd test jsme zkop\u00edrovali text p\u0159\u00edmo z The New York Times. Slovo od slova. Bez jak\u00fdchkoli zm\u011bn. Jednalo se o zjevn\u00e9 a nepopirateln\u00e9 plagi\u00e1torstv\u00ed.<\/p>\n\n\n\n<p>V\u00fdsledek Plagiarisma: <strong>68% jedine\u010dn\u00fd<\/strong>.<\/p>\n\n\n\n<p>Po\u010dkejte. Tento obsah byl 0% jedine\u010dn\u00fd. Zkop\u00edrovali jsme jej doslovn\u011b z publikovan\u00e9ho \u010dl\u00e1nku. Plagiarisma v\u0161ak tvrd\u00ed, \u017ee je v\u00edce ne\u017e ze dvou t\u0159etin origin\u00e1ln\u00ed?<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"725\" src=\"https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/11\/Plagiarisma-Test-Results-Plagiarized-Content-1024x725.jpg\" alt=\"\" class=\"wp-image-17346\" title=\"\" srcset=\"https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/11\/Plagiarisma-Test-Results-Plagiarized-Content-1024x725.jpg 1024w, https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/11\/Plagiarisma-Test-Results-Plagiarized-Content-300x212.jpg 300w, https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/11\/Plagiarisma-Test-Results-Plagiarized-Content-768x544.jpg 768w, https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/11\/Plagiarisma-Test-Results-Plagiarized-Content-18x12.jpg 18w, https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/11\/Plagiarisma-Test-Results-Plagiarized-Content.jpg 1194w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/div>\n\n\n<p><em>V\u00fdsledky testu Plagiarisma \u2013 Plagi\u00e1tov\u00fd obsah<\/em><\/p>\n\n\n\n<p>To je je\u0161t\u011b hor\u0161\u00ed ne\u017e fale\u0161n\u011b pozitivn\u00ed v\u00fdsledek. Hlavn\u00edm \u00fakolem tohoto n\u00e1stroje je odhalovat plagi\u00e1ty.<\/p>\n\n\n\n<p>To se v\u0161ak spektakul\u00e1rn\u011b nezda\u0159ilo. Pokud n\u011bkdo kop\u00edruje obsah z v\u00fdznamn\u00fdch publikac\u00ed, Plagiarisma mu to promine.<\/p>\n\n\n\n<p>M\u00e1me tedy n\u00e1stroj na kontrolu plagi\u00e1t\u016f, kter\u00fd ozna\u010duje origin\u00e1ln\u00ed obsah jako plagi\u00e1t a p\u0159ehl\u00ed\u017e\u00ed skute\u010dn\u00e9 plagi\u00e1ty. To nen\u00ed dobr\u00e9!<\/p>\n\n\n\n<p>Pokud chcete ov\u011b\u0159it, zda v\u00e1\u0161 obsah skute\u010dn\u011b vypad\u00e1 jako lidsk\u00fd, a p\u0159epsat v\u0161echny \u010d\u00e1sti ozna\u010den\u00e9 jako generovan\u00e9 um\u011blou inteligenc\u00ed, pot\u0159ebujete lep\u0161\u00ed n\u00e1stroje.<\/p>\n\n\n\n<p>N\u00e1stroje jako nap\u0159. <a href=\"https:\/\/undetectable.ai\/detector-humanizer\" target=\"_blank\" rel=\"noreferrer noopener\">Nerozpoznateln\u00fd detektor a humaniz\u00e1tor AI<\/a> dok\u00e1\u017ee skute\u010dn\u011b identifikovat obsah napsan\u00fd um\u011blou inteligenc\u00ed a spolehliv\u011b jej transformovat tak, aby pro\u0161el detekc\u00ed.<\/p>\n\n\n\n<p>K tomuto t\u00e9matu se za chv\u00edli vr\u00e1t\u00edme. Nejprve se pod\u00edvejme, jak si Plagiarisma vede v porovn\u00e1n\u00ed s alternativami.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Klady a z\u00e1pory plagi\u00e1torstv\u00ed<\/strong><\/h3>\n\n\n\n<p>Bu\u010fme spravedliv\u00ed a pod\u00edvejme se, co d\u011bl\u00e1 dob\u0159e a co ne.<\/p>\n\n\n\n<p><strong>Klady:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Zcela zdarma k pou\u017eit\u00ed<\/li>\n\n\n\n<li>Podporuje v\u00edce jazyk\u016f<\/li>\n\n\n\n<li>Pro z\u00e1kladn\u00ed kontroly nen\u00ed t\u0159eba m\u00edt \u00fa\u010det<\/li>\n\n\n\n<li>Jednoduch\u00e9 rozhran\u00ed (pokud se v\u00e1m l\u00edb\u00ed estetika roku 2010)<\/li>\n\n\n\n<li>P\u0159ij\u00edm\u00e1 r\u016fzn\u00e9 form\u00e1ty soubor\u016f<\/li>\n<\/ul>\n\n\n\n<p><strong>Nev\u00fdhody:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Hrozn\u00e1 p\u0159esnost s fale\u0161n\u011b pozitivn\u00edmi i fale\u0161n\u011b negativn\u00edmi v\u00fdsledky<\/li>\n\n\n\n<li>Zastaral\u00e9 rozhran\u00ed p\u016fsob\u00ed neohraban\u011b<\/li>\n\n\n\n<li>Pomal\u00e1 rychlost zpracov\u00e1n\u00ed<\/li>\n\n\n\n<li>Nelze spolehliv\u011b detekovat obsah parafr\u00e1zovan\u00fd um\u011blou inteligenc\u00ed<\/li>\n\n\n\n<li>\u017d\u00e1dn\u00e9 podrobn\u00e9 zpr\u00e1vy ani porovn\u00e1v\u00e1n\u00ed zdroj\u016f<\/li>\n\n\n\n<li>Omezen\u00e9 denn\u00ed kontroly v r\u00e1mci bezplatn\u00e9 \u00farovn\u011b<\/li>\n<\/ul>\n\n\n\n<p>Nev\u00fdhody v\u00fdrazn\u011b p\u0159eva\u017euj\u00ed nad v\u00fdhodami. Bezplatnost nem\u00e1 v\u00fdznam, pokud n\u00e1stroj nefunguje.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Plagiarisma AI vs. jin\u00e9 detektory AI<\/h2>\n\n\n\n<p>Nesta\u010dilo n\u00e1m pouze otestovat Plagiarisma. Cht\u011bli jsme zjistit, jak si s t\u00edmto obsahem porad\u00ed jin\u00e9 n\u00e1stroje.<\/p>\n\n\n\n<p>Pou\u017eili jsme p\u0159esn\u011b stejn\u00e9 texty z na\u0161ich p\u0159edchoz\u00edch test\u016f a provedli jsme je dv\u011bma konkuren\u010dn\u00edmi n\u00e1stroji: Undetectable AI a DupliChecker.<\/p>\n\n\n\n<p><strong>Nerozpoznateln\u00e9 v\u00fdsledky AI:<\/strong><\/p>\n\n\n\n<p>V p\u0159\u00edpad\u011b plagi\u00e1t\u016f obsahu New York Times n\u00e1stroj Undetectable AI spr\u00e1vn\u011b ozna\u010dil text jako plagi\u00e1t. \u017d\u00e1dn\u00e9 nejasnosti. \u017d\u00e1dn\u00e9 nespr\u00e1vn\u00e9 hodnocen\u00ed. N\u00e1stroj p\u0159esn\u011b identifikoval kop\u00edrovan\u00fd text.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"942\" height=\"478\" src=\"https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/11\/Plagiarism-Checker-Comparison-Results.jpg\" alt=\"\" class=\"wp-image-17347\" title=\"\" srcset=\"https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/11\/Plagiarism-Checker-Comparison-Results.jpg 942w, https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/11\/Plagiarism-Checker-Comparison-Results-300x152.jpg 300w, https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/11\/Plagiarism-Checker-Comparison-Results-768x390.jpg 768w, https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/11\/Plagiarism-Checker-Comparison-Results-18x9.jpg 18w\" sizes=\"auto, (max-width: 942px) 100vw, 942px\" \/><\/figure><\/div>\n\n\n<p><em>V\u00fdsledky srovn\u00e1n\u00ed n\u00e1stroj\u016f pro kontrolu plagi\u00e1t\u016f<\/em><\/p>\n\n\n\n<p><strong>V\u00fdsledky DupliChecker:<\/strong><\/p>\n\n\n\n<p>DupliChecker ohodnotil plagi\u00e1t jako 50% jedine\u010dn\u00fd. Lep\u0161\u00ed ne\u017e 68% od Plagiarisma, ale st\u00e1le nespr\u00e1vn\u00e9. Obsah byl zkop\u00edrov\u00e1n jako 100%. Za plagi\u00e1torstv\u00ed se neud\u011bluj\u00ed \u017e\u00e1dn\u00e9 \u010d\u00e1ste\u010dn\u00e9 body.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"545\" src=\"https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/11\/DupliChecker-scored-the-plagiarized-text-as-50-unique-1024x545.jpg\" alt=\"\" class=\"wp-image-17348\" title=\"\" srcset=\"https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/11\/DupliChecker-scored-the-plagiarized-text-as-50-unique-1024x545.jpg 1024w, https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/11\/DupliChecker-scored-the-plagiarized-text-as-50-unique-300x160.jpg 300w, https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/11\/DupliChecker-scored-the-plagiarized-text-as-50-unique-768x409.jpg 768w, https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/11\/DupliChecker-scored-the-plagiarized-text-as-50-unique-18x10.jpg 18w, https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/11\/DupliChecker-scored-the-plagiarized-text-as-50-unique.jpg 1209w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/div>\n\n\n<p>Ze v\u0161ech t\u0159\u00ed n\u00e1stroj\u016f, <strong>Nenapadnuteln\u00e1 AI zv\u00edt\u011bzila<\/strong>. P\u0159esn\u011b detekoval plagi\u00e1tov\u00fd obsah bez fale\u0161n\u00fdch poplach\u016f.<\/p>\n\n\n\n<p>Plagiarisma i DupliChecker m\u011bly pot\u00ed\u017ee se z\u00e1kladn\u00edmi detek\u010dn\u00edmi \u00fakoly.<\/p>\n\n\n\n<p>Pokud to s kontrolou obsahu na plagi\u00e1torstv\u00ed nebo generov\u00e1n\u00ed AI mysl\u00edte v\u00e1\u017en\u011b, pot\u0159ebujete n\u00e1stroj, kter\u00fd skute\u010dn\u011b funguje. Undetectable AI dok\u00e1zal, \u017ee tuto \u00falohu zvl\u00e1dne.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Dok\u00e1\u017ee Plagiarisma AI detekovat texty upraven\u00e9 pomoc\u00ed AI nebo parafr\u00e1zovan\u00e9 texty?<\/h2>\n\n\n\n<p>V\u011bt\u0161ina program\u016f na kontrolu plagi\u00e1t\u016f v roce 2025 \u010del\u00ed nov\u00e9 v\u00fdzv\u011b, a to <a href=\"https:\/\/undetectable.ai\/blog\/paraphrasing-tool-to-avoid-ai-detection\/\" target=\"_blank\" rel=\"noreferrer noopener\">AI parafr\u00e1ze<\/a>.<\/p>\n\n\n\n<p>N\u00e1stroje jako ChatGPT, <a href=\"https:\/\/undetectable.ai\/blog\/quillbot-review\/\" target=\"_blank\" rel=\"noreferrer noopener\">Quillbot<\/a>, a specializovan\u00ed p\u0159episovatel\u00e9 mohou zkop\u00edrovan\u00fd obsah tak d\u016fkladn\u011b p\u0159epracovat, \u017ee vypad\u00e1 jako origin\u00e1ln\u00ed.<\/p>\n\n\n\n<p>V\u00fdznam z\u016fst\u00e1v\u00e1 stejn\u00fd. Struktura z\u016fst\u00e1v\u00e1 podobn\u00e1. Ale p\u0159esn\u00e1 slova se m\u011bn\u00ed.<\/p>\n\n\n\n<p>Dok\u00e1\u017ee Plagiarisma toto zachytit?<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"842\" height=\"390\" src=\"https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/11\/plagiarized-New-York-Times-text-and-ran-it-through-Undetectable-AIs-Paraphraser.jpg\" alt=\"\" class=\"wp-image-17349\" title=\"\" srcset=\"https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/11\/plagiarized-New-York-Times-text-and-ran-it-through-Undetectable-AIs-Paraphraser.jpg 842w, https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/11\/plagiarized-New-York-Times-text-and-ran-it-through-Undetectable-AIs-Paraphraser-300x139.jpg 300w, https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/11\/plagiarized-New-York-Times-text-and-ran-it-through-Undetectable-AIs-Paraphraser-768x356.jpg 768w, https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/11\/plagiarized-New-York-Times-text-and-ran-it-through-Undetectable-AIs-Paraphraser-18x8.jpg 18w\" sizes=\"auto, (max-width: 842px) 100vw, 842px\" \/><\/figure><\/div>\n\n\n<p>Vzali jsme n\u00e1\u0161 plagi\u00e1t z New York Times a prohnali ho <a href=\"https:\/\/undetectable.ai\/paraphrasing-tool\" target=\"_blank\" rel=\"noopener\">Nezjistiteln\u00e1 AI<\/a><a href=\"https:\/\/undetectable.ai\/paraphrasing-tool\" target=\"_blank\" rel=\"noreferrer noopener\">\u2018Parafr\u00e1zova\u010d<\/a><strong> <\/strong>a AI Stealth Writer.<\/p>\n\n\n\n<p>Tyto n\u00e1stroje specificky upravuj\u00ed obsah generovan\u00fd um\u011blou inteligenc\u00ed a kop\u00edrovan\u00fd obsah, aby se vyhnuly detekci. Restrukturalizuj\u00ed v\u011bty, upravuj\u00ed slovn\u00ed z\u00e1sobu a fr\u00e1zov\u00e1n\u00ed, p\u0159i\u010dem\u017e zachov\u00e1vaj\u00ed p\u016fvodn\u00ed v\u00fdznam.<\/p>\n\n\n\n<p>Pot\u00e9 jsme zkontrolovali p\u0159epracovanou verzi v programu Plagiarisma.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"628\" src=\"https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/11\/Plagiarisma-Test-Results-AI-Paraphrased-Content-1024x628.jpg\" alt=\"\" class=\"wp-image-17417\" title=\"\" srcset=\"https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/11\/Plagiarisma-Test-Results-AI-Paraphrased-Content-1024x628.jpg 1024w, https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/11\/Plagiarisma-Test-Results-AI-Paraphrased-Content-300x184.jpg 300w, https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/11\/Plagiarisma-Test-Results-AI-Paraphrased-Content-768x471.jpg 768w, https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/11\/Plagiarisma-Test-Results-AI-Paraphrased-Content-18x12.jpg 18w, https:\/\/undetectable.ai/blog\/wp-content\/uploads\/2025\/11\/Plagiarisma-Test-Results-AI-Paraphrased-Content.jpg 1249w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/div>\n\n\n<p><em>V\u00fdsledky testu Plagiarisma \u2013 obsah parafr\u00e1zovan\u00fd um\u011blou inteligenc\u00ed&nbsp;<\/em><\/p>\n\n\n\n<p><strong>V\u00fdsledek: 100% jedine\u010dn\u00fd.<\/strong><\/p>\n\n\n\n<p>Plagiarisma nic nezjistila. N\u00e1stroj pova\u017eoval parafr\u00e1zovan\u00fd plagi\u00e1t za zcela origin\u00e1ln\u00ed obsah. \u017d\u00e1dn\u00e9 upozorn\u011bn\u00ed. \u017d\u00e1dn\u00e9 varov\u00e1n\u00ed. Perfektn\u00ed v\u00fdsledek.<\/p>\n\n\n\n<p>To odhaluje z\u00e1sadn\u00ed slabinu p\u0159\u00edstupu Plagiarisma. Tento n\u00e1stroj dok\u00e1\u017ee zachytit pouze p\u0159esn\u00e9 nebo t\u00e9m\u011b\u0159 p\u0159esn\u00e9 shody. Sta\u010d\u00ed zm\u011bnit dostatek slov a m\u00e1te vyhr\u00e1no.<\/p>\n\n\n\n<p>Vyzkou\u0161ejte n\u00e1\u0161 detektor um\u011bl\u00e9 inteligence a humaniz\u00e9r v n\u00ed\u017ee uveden\u00e9m widgetu!<\/p>\n\n\n\n<div id=\"uai-widget\" data-affiliate-link=\"https:\/\/undetectable.ai\/?_by=hi4km\"><script>var js = document.createElement(\"script\");js.async = true;js.src = \"https:\/\/widget.undetectable.ai\/js\/widget-loader.js?t=\"+Date.now();document.getElementsByTagName(\"head\")[0].appendChild(js);<\/script><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">Kdy\u017e je bezplatn\u00e9 dra\u017e\u0161\u00ed<\/h2>\n\n\n\n<p>Up\u0159\u00edmn\u011b \u0159e\u010deno, Plagiarisma nefunguje dostate\u010dn\u011b dob\u0159e, aby se na n\u011bj dalo v roce 2025 spolehnout.<\/p>\n\n\n\n<p>Na\u0161e testy odhalily opakuj\u00edc\u00ed se probl\u00e9my. Origin\u00e1ln\u00ed obsah byl ozna\u010den jako plagi\u00e1t. Zjevn\u011b kop\u00edrovan\u00fd obsah byl v\u011bt\u0161inou pova\u017eov\u00e1n za jedine\u010dn\u00fd. Plagi\u00e1ty parafr\u00e1zovan\u00e9 um\u011blou inteligenc\u00ed pro\u0161ly bez pov\u0161imnut\u00ed.<\/p>\n\n\n\n<p>Metodika tohoto n\u00e1stroje nedok\u00e1\u017ee zvl\u00e1dnout modern\u00ed tvorbu obsahu a taktiky akademick\u00e9 nepoctivosti.<\/p>\n\n\n\n<p>Pokud jste student a m\u00e1te obavy z fale\u0161n\u00fdch obvin\u011bn\u00ed, Plagiarisma m\u016f\u017ee ozna\u010dit va\u0161i origin\u00e1ln\u00ed pr\u00e1ci.<\/p>\n\n\n\n<p>Pokud jste u\u010ditel a sna\u017e\u00edte se odhalit plagi\u00e1torstv\u00ed, Plagiarisma p\u0159ehl\u00e9dne zjevn\u00e9 kop\u00edrov\u00e1n\u00ed. Pokud jste tv\u016frcem obsahu a kontrolujete kr\u00e1de\u017ee, Plagiarisma nezjist\u00ed parafr\u00e1zovan\u00e9 verze va\u0161\u00ed pr\u00e1ce.<\/p>\n\n\n\n<p>Alternativy, kter\u00e9 jsme testovali, zejm\u00e9na <a href=\"https:\/\/undetectable.a\" target=\"_blank\" rel=\"noreferrer noopener\">Nezjistiteln\u00e1 AI<\/a>, dos\u00e1hl v\u00fdrazn\u011b lep\u0161\u00edch v\u00fdsledk\u016f.<\/p>\n\n\n\n<p>Spr\u00e1vn\u011b identifikovali plagi\u00e1torsk\u00fd obsah, vyhnuli se fale\u0161n\u00fdm pozitiv\u016fm u origin\u00e1ln\u00edch prac\u00ed a poskytli spolehliv\u00e9 v\u00fdsledky, kter\u00fdm m\u016f\u017eete skute\u010dn\u011b d\u016fv\u011b\u0159ovat.<\/p>\n\n\n\n<p>B\u00fdt zdarma nem\u00e1 smysl, pokud n\u00e1stroj nepln\u00ed svou z\u00e1kladn\u00ed funkci. Nepou\u017e\u00edvali byste zdarma GPS, kter\u00e9 v\u00e1m polovinu \u010dasu d\u00e1v\u00e1 nespr\u00e1vn\u00e9 pokyny.<\/p>\n\n\n\n<p>Pro\u010d tedy d\u016fv\u011b\u0159ovat n\u00e1stroji na kontrolu plagi\u00e1t\u016f s hor\u0161\u00ed p\u0159esnost\u00ed?<\/p>\n\n\n\n<p>Pokud pot\u0159ebujete spolehlivou detekci, vylep\u0161ete sv\u00e9 n\u00e1stroje. Pokud v roce 2025 st\u00e1le pou\u017e\u00edv\u00e1te Plagiarisma, pracujete s zastaralou technologi\u00ed, kter\u00e1 nedok\u00e1\u017ee dr\u017eet krok s t\u00edm, jak lid\u00e9 dnes skute\u010dn\u011b p\u00ed\u0161\u00ed a vytv\u00e1\u0159ej\u00ed obsah.<\/p>\n\n\n\n<p>Verdikt: Plagiarisma m\u011bla sv\u016fj moment. Ten moment u\u017e pominul. P\u0159ejd\u011bte k lep\u0161\u00edm mo\u017enostem.<\/p>","protected":false},"excerpt":{"rendered":"","protected":false},"author":15,"featured_media":17342,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_themeisle_gutenberg_block_has_review":false,"footnotes":""},"categories":[5],"tags":[],"class_list":["post-17333","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-reviews"],"_links":{"self":[{"href":"https:\/\/undetectable.ai/blog\/cs\/wp-json\/wp\/v2\/posts\/17333","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/undetectable.ai/blog\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/undetectable.ai/blog\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/undetectable.ai/blog\/cs\/wp-json\/wp\/v2\/users\/15"}],"replies":[{"embeddable":true,"href":"https:\/\/undetectable.ai/blog\/cs\/wp-json\/wp\/v2\/comments?post=17333"}],"version-history":[{"count":7,"href":"https:\/\/undetectable.ai/blog\/cs\/wp-json\/wp\/v2\/posts\/17333\/revisions"}],"predecessor-version":[{"id":17418,"href":"https:\/\/undetectable.ai/blog\/cs\/wp-json\/wp\/v2\/posts\/17333\/revisions\/17418"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/undetectable.ai/blog\/cs\/wp-json\/wp\/v2\/media\/17342"}],"wp:attachment":[{"href":"https:\/\/undetectable.ai/blog\/cs\/wp-json\/wp\/v2\/media?parent=17333"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/undetectable.ai/blog\/cs\/wp-json\/wp\/v2\/categories?post=17333"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/undetectable.ai/blog\/cs\/wp-json\/wp\/v2\/tags?post=17333"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}