基于Z39.50的分布式联机书目检索  

Distributed Online Bibliographic Retrieval Based on Z39.50

作　　者：闵峰[1] 张福炎[1] 黄伟红[1] 王晔[1] 

机构地区：[1]南京大学计算机科学和技术系,南京210093

出　　处：《情报学报》2000年第5期538-543,共6页Journal of the China Society for Scientific and Technical Information

摘　　要：Z3 9 50是网络信息检索的标准协议 ,目前主要应用于联机书目检索领域。本文首先探讨基于Z3 9 50的联机书目检索的技术以及目前面临的问题 ,然后提出一个应用查询路由技术的分布式结构 ,并讨论了MARC索引的组织 ,节点质心信息的提取 ,查询循环控制等关键技术。文中提出的系统结构和实现技术有助于提高数字图书馆环境中分布资源的查询效率。Z39.50 is a standard network protocol of information retrieval,especially used in the field of online bibliographic retrieval.In this paper,firstly,we discuss the technology of online bibliographic retrieval service based on Z39 50 and the problem of the current structure is presented.Secondly,we present a distributed architecture that uses the technology of query routing.Thirdly,the basic technology,such as the buildup of Marc index,fetching of the centroid information and loop control are discussed.The system architecture and technology that is presented in the paper increase the query efficiency of distributed resources in the digital library.

关 键 词：Z39.50 分布式联机书目检索 信息检索 节点模型 

分 类 号：G354[文化科学—情报学]