First of all, an authoritative paper duplicate checking system should have high accuracy. This requires the system to adopt advanced technologies and algorithms, which can efficiently and accurately detect the repetitive content and plagiarism in the paper. In addition, the system should have a large number of data and literature databases, which can cover a wide range of disciplines and various types of academic literature, so as to better detect duplication and plagiarism in papers.

Secondly, the authoritative paper duplicate checking system needs high security and confidentiality. Papers submitted by graduate students or academic workers should be protected and must not be leaked or used for other purposes. Therefore, the system needs to adopt strict data encryption and access control technology to ensure users' privacy and data security.

Finally, the authoritative paper duplicate checking system needs to have efficient service and operability. The system should have a simple and easy-to-use user interface and operation flow, be able to upload papers and conduct tests quickly, and provide detailed test reports and suggestions so that users can better understand and modify the contents of the papers.

When choosing an authoritative paper duplicate checking system, we can evaluate it from the following aspects: system technology and algorithm, document library coverage, data security, service and operation flow. At the same time, we should also check the user evaluation and use history of the system in order to better understand the actual effect and user satisfaction of the system.