{"id":38880,"date":"2019-10-31T22:26:31","date_gmt":"2019-10-31T19:26:31","guid":{"rendered":"https:\/\/prohoster.info\/blog\/nedorabotka-v-python-skripte-mogla-privesti-k-nevernym-rezultatam-v-bolee-100-publikatsiyah-po-himii\/"},"modified":"2019-10-31T22:26:31","modified_gmt":"2019-10-31T19:26:31","slug":"nedorabotka-v-python-skripte-mogla-privesti-k-nevernym-rezultatam-v-bolee-100-publikatsiyah-po-himii","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sv\/blog\/news\/nedorabotka-v-python-skripte-mogla-privesti-k-nevernym-rezultatam-v-bolee-100-publikatsiyah-po-himii","title":{"rendered":"Ett fel i Python-skriptet kan ha lett till felaktiga resultat i mer \u00e4n 100 publikationer om kemi","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Doktorand vid det hawaiianska universitetet uppt\u00e4ckte<\/a><\/noindex> ett problem i en Python-skript som anv\u00e4nds f\u00f6r ber\u00e4kningar kemsik f\u00f6rskjutning<\/a><\/noindex>, som definierar den kemiska strukturen av det studerade \u00e4mnet vid spektralanalys av signaler med metoden nukle\u00e4r magnetisk resonans<\/a><\/noindex>. Under verifieringen av forskningsresultat fr\u00e5n en av sina professorer noterade doktoranden att vid k\u00f6rning av skriptet i olika operativsystem p\u00e5 samma dataset fick man olika resultat.<\/p>\n

Till exempel, n\u00e4r det k\u00f6rdes i macOS 10.14 och Ubuntu 16.04 f\u00f6r det testade datasetet gav skriptet ett<\/a><\/noindex> inkorrekt v\u00e4rde p\u00e5 172.4 ist\u00e4llet f\u00f6r 173.2. Skriptet best\u00e5r av cirka 1000 rader kod och har anv\u00e4nts av kemister sedan 2014. En granskning av koden visade att det felaktiga v\u00e4rdet orsakades av<\/a><\/noindex> \u043e\u0442\u043b\u0438\u0447\u0438\u044f\u043c\u0438 \u043f\u0440\u0438 \u0441\u043e\u0440\u0442\u0438\u0440\u043e\u0432\u043a\u0435 \u0444\u0430\u0439\u043b\u043e\u0432 \u0432 \u0440\u0430\u0437\u043d\u044b\u0445 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u043e\u043d\u043d\u044b\u0445 \u0441\u0438\u0441\u0442\u0435\u043c\u0430\u0445. \u0410\u0432\u0442\u043e\u0440\u044b \u0441\u043a\u0440\u0438\u043f\u0442\u0430 \u043f\u043e\u043b\u0430\u0433\u0430\u043b\u0438, \u0447\u0442\u043e \u0444\u0443\u043d\u043a\u0446\u0438\u044f «glob()<\/a><\/noindex>» \u0432\u0441\u0435\u0433\u0434\u0430 \u0432\u043e\u0437\u0432\u0440\u0430\u0449\u0430\u0435\u0442 \u0444\u0430\u0439\u043b\u044b, \u043e\u0442c\u043e\u0440\u0442\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u0435 \u043f\u043e \u0438\u043c\u0435\u043d\u0438, \u0432 \u0442\u043e \u0432\u0440\u0435\u043c\u044f \u043a\u0430\u043a \u0432 \u0434\u043e\u043a\u0443\u043c\u0435\u043d\u0442\u0430\u0446\u0438\u0438 \u043d\u0430 glob \u0443\u043a\u0430\u0437\u0430\u043d\u043e, \u0447\u0442\u043e \u043f\u043e\u0440\u044f\u0434\u043e\u043a \u0432\u044b\u0432\u043e\u0434\u0430 \u043d\u0435 \u0433\u0430\u0440\u0430\u043d\u0442\u0438\u0440\u0443\u0435\u0442\u0441\u044f. \u0418\u0441\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u0435 \u0441\u0432\u0435\u043b\u043e\u0441\u044c \u043a \u0434\u043e\u0431\u0430\u0432\u043b\u0435\u043d\u0438\u044e list_of_files.sort() \u043f\u043e\u0441\u043b\u0435 \u0432\u044b\u0437\u043e\u0432\u0430 glob().<\/p>\n

\"Ett<\/a><\/noindex><\/center><\/p>\n

Det uppt\u00e4ckta problemet ifr\u00e5gasatte korrektheten av mer \u00e4n 100 publikationer inom kemi, vars slutsatser baserades p\u00e5 den ber\u00e4knade kemiska f\u00f6rskjutningen fr\u00e5n skriptet. Det exakta antalet studier d\u00e4r skriptet har anv\u00e4nts \u00e4r ok\u00e4nt, men publikationens kod har citerats i 158 arbeten. F\u00f6rfattarna till dessa arbeten rekommenderades att bed\u00f6ma skriptets korrekthet p\u00e5 de operativsystem som anv\u00e4ndes f\u00f6r ber\u00e4kningen och att utf\u00f6ra omber\u00e4kningar f\u00f6r att s\u00e4kerst\u00e4lla att de ber\u00e4knade v\u00e4rdena var korrekta. Incidenten \u00e4r ett utm\u00e4rkt exempel p\u00e5 att inte bara kvaliteten p\u00e5 experimentutf\u00f6randet utan \u00e4ven korrektheten i bearbetningen av de erh\u00e5llna uppgifterna i program som tidigare
\nanv\u00e4ndes allm\u00e4nt, kan p\u00e5verka det slutliga resultatet.<\/p>\n

<\/a><\/noindex><\/p>\n

K\u00e4lla: opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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[…]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":29167,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-38880","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47 En brist i Python-skriptet kan ha lett till felaktiga resultat i \u00f6ver 100 publikationer inom kemi | ProHoster","description":"Doktoranden vid det hawaiianska universitetet uppt\u00e4ckte ett problem 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