摘要
目前,元数据共享的研究主要集中在一些专业领域,使用的元数据格式不具有普遍适用性。而且随着用户对于信息共享的需求不断提高,异构复杂数据的按需共享和同步成为亟待解决的问题。首先,对信息共享技术进行了研究,提出了一种两层结构的元数据格式,第一层元数据为单独一类数据提供了统一的描述格式,第二层元数据统一管理第一层元数据以屏蔽不同类别元数据格式的差异。其次,在信息共享系统中实现了多类数据在不同用户之间的数据同步,并对元数据的检索方法进行了改进,提高了效率。最后,通过实验证明了方法的有效性,并给出了结论。
Nowadays researches on metadata for information sharing mainly focus on some processional fields. The existent metadata standards cannot he used under all conditions. As the user＇s requirement for information sharing improves unceasingly, the on-demand sharing and synchronization of heterogeneous and complicated data become an urgent issue to be solved. First, the information sharing technology is researched, and then a two layer metadata standard is proposed. The first layer of the metadata provides a uniform description format for one type of data, and the second layer of the metadata manages the first layer to shield the difference between multi-class metadata formats. Second, an information sharing system is built to realize the multiple class data synchronization between different users. At the same time, the searching algorithm of the metadata is optimized. Finally, the experiment results illustrate the effectiveness of the approach and the conclusion is given.
出处
《系统工程与电子技术》
EI
CSCD
北大核心
2015年第3期700-706,共7页
Systems Engineering and Electronics
基金
国家自然科学基金(61273350)资助课题
关键词
元数据
信息共享
异构数据
同步
metadata
information sharing
heterogeneous data
synchronization
