KNN algorithm is a common and effective text categorization algorithm.

KNN算法是一种常用的效果较好的文本分类算法。

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The performance of text categorization algorithm based on centroid is poor when the documents are dispersive or existing more than one peak value.

当文本集较分散或出现多峰值时，基于质心的文本分类算法分类效果很差。

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Aiming at this problem, this paper proposes an improved text categorization algorithm whose performance is higher than classical categorization algorithm based on centroid.

针对该问题提出一种改进的文本分类算法，与基于质心的经典分类算法相比，其性能较高。

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