{"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\/es\/blog\/news\/nedorabotka-v-python-skripte-mogla-privesti-k-nevernym-rezultatam-v-bolee-100-publikatsiyah-po-himii","title":{"rendered":"Un error en un script de Python podr\u00eda haber llevado a resultados incorrectos en m\u00e1s de 100 publicaciones sobre qu\u00edmica","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Estudiante de posgrado de la universidad de Haw\u00e1i descubri\u00f3<\/a><\/noindex> un problema en el script de Python utilizado para c\u00e1lculos desplazamiento qu\u00edmico<\/a><\/noindex>, que determina la estructura qu\u00edmica de la sustancia estudiada mediante el an\u00e1lisis espectral de se\u00f1ales por el m\u00e9todo de resonancia magn\u00e9tica nuclear<\/a><\/noindex>. Durante la verificaci\u00f3n de los resultados de las investigaciones de uno de sus profesores, el estudiante de posgrado not\u00f3 que al ejecutar el script en diferentes sistemas operativos sobre el mismo conjunto de datos, el resultado era diferente.<\/p>\n

Por ejemplo, al ejecutarse en macOS 10.14 y Ubuntu 16.04 para el conjunto de datos probado, el script produjo<\/a><\/noindex> un valor incorrecto de 172.4 en lugar de 173.2. El script incluye alrededor de 1000 l\u00edneas de c\u00f3digo y ha sido utilizado por qu\u00edmicos desde 2014. El estudio del c\u00f3digo mostr\u00f3 que la salida del valor err\u00f3neo se deb\u00eda a<\/a><\/noindex> diferencias al clasificar archivos en diferentes sistemas operativos. Los autores del script cre\u00edan que la funci\u00f3n «glob()<\/a><\/noindex>» siempre devuelve archivos ordenados por nombre, mientras que la documentaci\u00f3n de glob indica que el orden de salida no est\u00e1 garantizado. La correcci\u00f3n consisti\u00f3 en agregar list_of_files.sort() despu\u00e9s de la llamada a glob().<\/p>\n

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

El problema encontrado ha puesto en duda la validez de m\u00e1s de 100 publicaciones en qu\u00edmica, cuyas conclusiones se basaron en el desplazamiento qu\u00edmico calculado por el script. Se desconoce el n\u00famero exacto de investigaciones en las que se utiliz\u00f3 el script, pero la publicaci\u00f3n con su c\u00f3digo ha sido citada en 158 trabajos. Se ha recomendado a los autores de estos trabajos evaluar la validez del funcionamiento del script en los sistemas operativos utilizados para los c\u00e1lculos y realizar un nuevo c\u00e1lculo para confirmar la exactitud de los valores calculados. El incidente es un gran ejemplo de que no solo la calidad de la realizaci\u00f3n del experimento, sino tambi\u00e9n la correcci\u00f3n en el procesamiento de los datos obtenidos en programas que anteriormente se usaban ampliamente, puede afectar el resultado final.
\nEl estudiante de posgrado de la universidad de Haw\u00e1i descubri\u00f3 un problema en.<\/p>\n

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

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

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