First of all, personal information and original reports do not belong to the scope of repeated detection, and deleting these information will not affect the results of repeated detection. Secondly, this information may be regarded as private or sensitive information, and if it is not deleted, it may reveal the privacy of individuals or others or cause other security problems.

Specifically, personal information and original statement can include but not limited to: name, gender, age, date of birth, nationality, place of origin, work unit, occupation, education, research direction, contact information of the author, etc. This information may be regarded as personal privacy or sensitive information in the paper, and deleting this information can protect the privacy and safety of the author.

In addition, original statements are usually used to declare the originality and authenticity of the paper, but the contents of these statements are often just repeating the contents of the paper and do not provide new information or evidence. Therefore, deleting these statements can avoid unnecessary repetition and redundancy, and also reduce the time and cost of repeated detection.

It should be noted that different duplicate checking systems may have different requirements and operation procedures, and the specific operation methods may also vary from system to system. Before submitting duplicate checking, it is recommended to read the user manual or user guide of duplicate checking system carefully to understand the relevant precautions and operation procedures.