The knowledge used in this method (called HPIE) is composed of a few kinds of pattern descriptions, from abstract to concrete for information recognition patterns.
将网页信息抽取知识分为若干层，由抽象到具体逐层描述信息识别模式知识。
The knowledge used in this method (called HPIE) is composed of a few kinds of pattern descriptions, from abstract to concrete for information recognition patterns.
将网页信息抽取知识分为若干层，由抽象到具体逐层描述信息识别模式知识。
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