文中给出了分类策略和实现算法，并以中国石油网油气管道专题信息分类为例验证了方法的有效性。
The classification strategy and implementing algorithm is given in this paper, and the method's validity is proved by the subject information classification of China oil and gas pipeline.
文中给出了分类策略和实现算法，并以中国石油网油气管道专题信息分类为例验证了方法的有效性。
The classification strategy and implementing algorithm is given in this paper, and the method's validity is proved by the subject information classification of China oil and gas pipeline.
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