The first one is a visual knowledge base that provides top-down hypotheses for image parsing and serves as an image ontology for translating parse graphs into semantic representations .

第一个是视觉知识库，为图像 解译提供 至顶 向下的指导，作为图像本体论服务于解译图向语义表达的转换。

In this paper through the concrete examples the author introduces two kinds of parsing approaches : bottom-up parsing and top-down parsing .

通过具体的实例，介绍了两种基于短语结构语法的剖析方法&自底向上剖析和 自顶向下 剖析。

It is proposed that a top-down parsing algorithm with a chart structure is integrated with a semantical database . The semantical database is obtained while the syntax ingredient is analyzed by this method .

提出了图结构 自顶向下 分析算法同数据库语义相结合的方法，以此来完成句子结构的分析和句法成分数据库语义的获得。

This paper introduces a top-down parsing method of English using Augmented Transition Networks ( ATN 'S ) and simply presents implemented structure of English grammar as well as the design and implementation of ATN 'S.

本文阐述了用增广转移网络作为英语的一种 自上而下 的 语法 分析方法，并简要地描述了已实现的英语语法结构以及增广转移网络的设计和实现。

A Top-Down Parsing of English

关于英语的一种 自上而下 的 语法 分析 方法

The lexical analysis uses the advanced search method while the syntax analysis adopts the top-down recursive descent parsing . Furthermore we give some sample codes arithmetical statement and the design of related classes .

其中词法分析是利用超前搜索的方法，语法分析则采用了 自上而下的递归下降 分析法，并给出了示例代码、算法描述和相关类的结构设计。