基于向量空间模型的主动推送系统设计与优化
邹志文,柯青
The Design and Optimization of an Active  Pushing System Based on the Vector Space Model
Zou Zhiwen,Ke Qing
现代图书情报技术 . 2005, (7): 42 -45 .  DOI: 10.11925/infotech.1003-3513.2005.07.11