It transforms the flat, character-based state representation from the URL into a hierarchical object representation (the document model introduced above).

它会将普通的基于字符的状态表示形式从url转换为层次结构对象表示形式(上面介绍的文档模型)。

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An algorithm constructing the hierarchical tree representation based on skeleton elements by top-down decomposition of object skeletons is presented in this paper.

文章对骨架的结构基元自顶向下地进行分解，将基元组织成层次树表示。

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