【作者】 孙广坤； 李建中； 何震瀛；

【机构】 哈尔滨工业大学计算机科学与技术学院；

【摘要】 <正>1引言在线数字化信息的迅速膨胀,使得数字图书馆这个概念也随着计算机及信息技术的飞速发展应运而生。然而建设数字图书馆面临着重大的挑战,其中包括查询路由选择、各异构信息源集成以及返回结果集的冗余去除等问题。这一类存在于中介层的问题我们定义为互操作层问题。更多还原

【Abstract】 This paper presents a dispatcher-based digital library architecture improved on the Pharos model, the primary improvement of which is that the dispatcher can balance the mediator loading.Moreover,this architecture can well solve many problems faced by the traditional architectures,such as poor expansibility, low cache hit rate,etc.Corresponding to this architecture,the interoperability protocol DBDLIP is also well defined and developed,and in practice,we found it is very flexible.更多还原