In addition, a text classification system based on Vector Space Model is studied and a new method for calculating word weight is proposed.
此外，本文还研究了基于向量空间模型的自动文本分类方法，提出了一个新的词权重计算方法，该方法有效提高了分类精度。
In this paper, a calculating model of observing orientation for space solar Tadiation measuring systems is introduced.
本文给出了一种空间太阳辐射测量系统观测方位的计算模型。
Some Approximate Space concepts were re-defined. The Reduction of Weighing Rough Set Model was stated, two methods for calculating weight were was given, too.
重新定义了近似空间内的一些概念，给出了加权粗糙集模型的约简概念，指出了加权系数的两种方法。
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