基于关键字权重及结构扩展的XML检索

A XML RETRIEVAL METHOD BASED ON KEYWORD WEIGHT AND STRUCTURE EXPANSION

XML作为互联网上数据表示和交换的标准应用日益广泛,XML检索也得到越来越多信息检索领域研究者的关注,如何提高XML检索效果已经成为一个重要的研究领域.针对这一问题作者提出了一种基于关键字权重及结构扩展的检索方法,通过计算关键字的权重进行检索得到中间检索结果,然后再对中间检索结果进行结构扩展进一步检索,进而得到最终的查询结果.实验结果表明,与传统方法比较,作者提出的方法具有较高的准确率及查全率.

XML as a standard of Internet data presentation and exchange is widely used.XML retrieval research is being conducted by more and more IR researchers.How to improve the XML retrieval effect is a very important research area.The paper introduces a method that is based on keywords weight and structure extending.By calculating the keywords′ weight,the method get the intermediate results,then retrieval these intermediate results by structure extending.The experiment proves that the paper′s method have more precious accuracy and higher recall rate.