The topics are as follows: (1)interoperability protocol of DLs, middleware of DLs, discovery of information in DLs, semantic interoperability and metadata interoperability for DLs, (2)the approaches of DLs interoperability and its evaluating criteria.
文章对DLs互操作的研究现状及关键技术进行了综述与讨论 ,主要内容包括 :⑴DLs互操作协议、DLs中间件、DLs中的信息发现、语义互操作和元数据互操作 ;⑵DLs互操作的实现方法及评价标准。
