vector structure
4.The paper presents a fingerprinting modulation method based on vector-tree structure. Comparing to traditional AND-ACC method, it can improve system performance in resistance against the attack of colluders.
5.Different corpuses influence the classification result. For example, the average recall is 89.31% andthe average precision is 88.33%, by using the news web pages as corpus from the web site "www.sina.com.cn", which adopt the center-vector algorithm to structure classifier and select Chinese-word as feature.
9.The composite knowledge representation approach to knowledge unit, rule, procedure, vector and list,and the structure and the maintenance means of knowledge base are presented in this paper, on the basis of analysing the design process and the knowledge characteristics of mechanical products,and combining the research of Gear Box Expert System------GBES, GBES is written in Scheme Lisp,It has, run, successfully on an IBM RC/AT computer.

