After the separation of the network,the main network is extracted in which weighted centrality is calculated and betweenness on the basis of boundary nodes is developed which results in the reduction of amount of computation.

To solve this problem,this paper using distributing density size of the data dot as weighted value,together with semi-supervised learning,presents a semi-supervised and dot density weighted FCM algorithm.

Relationship between Strehl ratio and root mean square for assessing optical surface;

It is generally to use PV, RMS and Strehl ratio to assess surface errors, the inherent relationships among these conventional optics specifications are discussed in this paper.

This paper summarizes and classifies the main tracking algorithms under occlusions commonly used at home and abroad,and introduces several kinds of popular tracking algorithms under occlusions based on central weights,part matching,track prediction,and Bayesian theory,respectively.