1. Re-evaluation: For experts with high or low scores, the task of grading can be rearranged, and they can also be required to receive training or explain the grading standards before grading, so as to improve the accuracy and objectivity of their grading.

2. Introducing external experts: In order to avoid the possible prejudice or influence of internal experts, external experts can be invited to participate in the grading, and a relatively authoritative and objective grading result can be obtained on the basis of the opinions of many experts.