基于上下文无关文法的数据抽取规则

Context-free grammar based on data extraction rules

在对文本数据文件的数据结构深入分析的基础上,提出了利用上下文无关文法表示数据抽取的规则,指明可以利用XML语言的特点,实现文本数据文件结构的表示文法,解决了文本数据ETL技术中涉及的重要问题,即复杂数据表示问题。

This article analyzes the structure of text data in detail, and put forth the rules of data extraction through using of Contextfree Grammar, in final point out that can be realized by XML. This article resolve the most important and basis problem in an effective text data ETL technology domain, that is, complex data representation.