Using latent semantic analysis to extract feature, the affect of synonymy and polysemy in text representation process is eliminated and the dimension of text vector is reduced.
利用潜在语义分析进行特征抽取，消除多义词和同义词在文本表示时造成的偏差，并实现文本向量的降维。
Studying representation method of fusee and small spindle part of the case-and-knowledge-based, the described method of objected oriented of geometry feature and process feature information is built.
通过研究引信和钟表小轴类零件基于知识和实例的表示方法，建立了面向对象的零件几何、工艺特征信息描述方法。
This paper aims to establish a domain independent representation formalism for feature based design in three aspects: formal representation, design process model and design algorithm.
从三个方面研究了基于特征设计的形式化描述方法：基于特征设计的基本定义、设计过程模型及设计算法。
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