There are many paper plagiarism checking systems on the market, among which the more commonly used and representative systems include: Turnitin, iThenticate, and CNKI plagiarism checking systems.
1. Turnitin:
Turnitin is one of the most famous paper plagiarism checking systems in the world, launched by an American education technology company. It is mainly used to detect plagiarism in academic papers and assignments in universities and research institutions. It can detect content copied or plagiarized by students from the Internet or other sources, and give corresponding scores and suggestions. Turnitin uses advanced text comparison algorithms and database technology, with high-precision detection capabilities and extensive database resources.
2. iThenticate:
iThenticate is a high-end document duplication checking system developed by the American company Plagiarism.org. It is mainly used to detect the originality and plagiarism of high-end documents such as research papers, academic journals, publications, and patents. iThenticate has high-precision detection capabilities and can detect similarities in original documents to avoid repeated publication or infringement. iThenticate's detection results usually include multiple indicators such as duplication rate, similarity, references, and citation format.
3. CNKI plagiarism checking system:
CNKI plagiarism checking system is a plagiarism checking system for Chinese academic papers and dissertations launched by China National Knowledge Infrastructure. It is mainly used to detect plagiarism in Chinese academic papers and dissertations, and has high-precision and high-efficiency detection capabilities. The CNKI duplication checking system can detect indicators such as duplication rate, similarity, and originality in papers, and provide corresponding detection reports and suggestions. The database resources of the CNKI duplication checking system mainly come from CNKI's academic literature database and network resource library.