id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
fcis-30617	Song, Qiao; Song, Zengren	Improvement of Data Cleaning and Quality Assessment Methods Under Big Data Environment	2025	5	.pdf	application/pdf	4061	207	51	Missing data will affect the integrity and accuracy of data analysis. Data Errors Data errors are manifested as data values that do not match the actual situation.	cache/fcis-30617.pdf	txt/fcis-30617.txt