Feature selection is a valid method to reduce the dimension of text vector in automatic text categorization system.

在自动文本分类系统中，特征选择是有效降低文本向量维数的一种方法。

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After calculate the text vector and main vector, the system will judge which kind the page is by the result of calculation.

该部分通过抽取网页的特征项，形成文本向量，然后与中心向量进行相似度计算后，根据相似度的结果来对网页进行自动分类。

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Won the first to use state money - is the era of the Warring States, Qin Yan and ultimately from the Qin Dynasty unified the country, won the money as a unified text vector.

在圜形方孔的钱币上注明文字，标示其价值和通行的年代区域，是历史的必然选择。

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It supports both raster and vector graphics, color separations, various photo filters, and the usual text, paint, and draw functions.

CNN: Top 10 hot graphics tools