Processing these events requires the knowledge and understanding of StAX XMLEvent hierarchy, which is discussed next.
处理这些事件需要知道和熟悉StAX XMLEvent的层次结构，下面我们来讨论它。
This paper firstly discusses three kinds of level in the fineness hierarchy of semantic roles, and introduces their application in some systems of natural language processing(NPL).
本文首先讨论语义角色的三种精细程度不一的分类层级，介绍它们各自在语言信息处理系统中的有关应用。
A simple model for the hierarchy of marketing places and the cost of processing information and final consumption price is established.
建立了关于分销渠道的层级、信息处理成本以及最终消费价格关系的简单模型。
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