【摘要】 首先设计了科技论文的DTD文档,然后分析了PDF文档的结构。在此基础上,我们介绍了PDF文档信息抽取系统的设计框架。该框架以上述DTD为模板,把以PDF格式表示的科技论文解析转换为有效的XML文档。更多还原

【Abstract】 The article is structured as follows.Firstly, we try to design a DTD of articles of science and technology.Secondly,we analyze the structure of PDF documents.Based on that,we dwell on the design of a PDF information extraction system,which use the above-mentioned DTD as a template,transfer a PDF-formatted scientific and technological article to a valid XML document.更多还原