The coverage of the database is different: Wanfang's paper duplicate checking system only contains academic papers, dissertations, scientific and technological reports, patent papers and other written content, but does not include non-written content such as web pages and news content; The duplicate checking system of HowNet includes academic papers, dissertations, scientific reports, patent papers, web pages, news contents and other text contents. Therefore, in terms of database coverage, HowNet duplicate checking system is more extensive.
The detection algorithm is different: Wanfang duplicate checking system adopts word segmentation algorithm, that is, it is calculated according to the standard of continuous repetition exceeding 10 words; The duplicate checking system of HowNet adopts the sliding window algorithm, that is, it is calculated according to the standard of continuous repetition of more than 13 words. Therefore, in the detection algorithm, HowNet is more strict in duplicate checking.
The test results are different: Wanfang's paper duplicate checking system only contains academic papers, dissertations, scientific and technological reports, patent papers and other written contents, which may be misjudged as plagiarism or omission when duplicate checking; The content of HowNet duplicate checking system is more extensive, so the detection result is more accurate.
To sum up, there are some differences between Wanfang duplicate checking and HowNet duplicate checking, mainly in database coverage, detection algorithm and detection results. Therefore, when checking duplicate papers, it is necessary to choose a suitable duplicate checking system according to the requirements of schools or periodicals.