研究了AXML文档安全重写判定问题,即判定给定AXML文档通过触发其包含的服务调用生成的文档集合是否能够全部重写为符合目标模式的文档实例。基于树自动机理论,定义了用于抽象AXML文档的树自动机——ATA机(AXML tree automata),ATA机等...研究了AXML文档安全重写判定问题,即判定给定AXML文档通过触发其包含的服务调用生成的文档集合是否能够全部重写为符合目标模式的文档实例。基于树自动机理论,定义了用于抽象AXML文档的树自动机——ATA机(AXML tree automata),ATA机等价于给定AXML文档通过触发其包含的服务调用所能生成的文档集合。基于ATA机,提出一个AXML文档安全重写判定算法,表明了该算法的正确性及有效性。展开更多
With the rapid development and spread of the Internet technology,there have been significant progresses inthe Internet information retrieval and active services. However,with the traditional Internet search engines an...With the rapid development and spread of the Internet technology,there have been significant progresses inthe Internet information retrieval and active services. However,with the traditional Internet search engines and activeservices ,which are all based on simple similarity technology of features and users' personal information are matchingof keywords or bag of words ,the document described through simple key words or words bag,and documents featuresand users' personal interests aren't well depicted due to the lack of semantics. XML is a newly emerged standard forthe WWW data exchange and description. XML-based information retrieval system not only describes the contents ofthe documents,but also takes the documents' structural information. In this paper,a newer personal active informa-tion service system is discussed,under which the heterogeneous,distributed data spreading on the Web will be inte-grated to XML data,and users' personal information are described through XML queries. We have proposed the gen-eral architecture of this system,and several key technologies for the establishment of such a system are also pre-sented.展开更多
传统网络只能依照预先定义的协议被动地传输数据.随着网络应用的不断扩大,新的用户需求和应用也不断涌现,而新的协议及服务却很难在现行网络上快速实施.主动网络为解决传统网络存在的问题提供了一条新思路.主动网络的主要优点是用户可...传统网络只能依照预先定义的协议被动地传输数据.随着网络应用的不断扩大,新的用户需求和应用也不断涌现,而新的协议及服务却很难在现行网络上快速实施.主动网络为解决传统网络存在的问题提供了一条新思路.主动网络的主要优点是用户可以根据需要向网络节点中插入程序,以完成定制的网络协议和服务.因此,主动刚络的核心功能是按照用户要求识别,传输,加载并运行主动应用程序,以完成用户所需要的计算.本文提出了一种基于XML的主动应用程序描述符AADX(Active Application Descriptor based on XML).该描述符可以用来标识主动程序并为其传输和加载提供基础.它为主动网络提供了一种有效灵活的主动程序识别和分发机制.展开更多
文摘研究了AXML文档安全重写判定问题,即判定给定AXML文档通过触发其包含的服务调用生成的文档集合是否能够全部重写为符合目标模式的文档实例。基于树自动机理论,定义了用于抽象AXML文档的树自动机——ATA机(AXML tree automata),ATA机等价于给定AXML文档通过触发其包含的服务调用所能生成的文档集合。基于ATA机,提出一个AXML文档安全重写判定算法,表明了该算法的正确性及有效性。
文摘With the rapid development and spread of the Internet technology,there have been significant progresses inthe Internet information retrieval and active services. However,with the traditional Internet search engines and activeservices ,which are all based on simple similarity technology of features and users' personal information are matchingof keywords or bag of words ,the document described through simple key words or words bag,and documents featuresand users' personal interests aren't well depicted due to the lack of semantics. XML is a newly emerged standard forthe WWW data exchange and description. XML-based information retrieval system not only describes the contents ofthe documents,but also takes the documents' structural information. In this paper,a newer personal active informa-tion service system is discussed,under which the heterogeneous,distributed data spreading on the Web will be inte-grated to XML data,and users' personal information are described through XML queries. We have proposed the gen-eral architecture of this system,and several key technologies for the establishment of such a system are also pre-sented.
文摘传统网络只能依照预先定义的协议被动地传输数据.随着网络应用的不断扩大,新的用户需求和应用也不断涌现,而新的协议及服务却很难在现行网络上快速实施.主动网络为解决传统网络存在的问题提供了一条新思路.主动网络的主要优点是用户可以根据需要向网络节点中插入程序,以完成定制的网络协议和服务.因此,主动刚络的核心功能是按照用户要求识别,传输,加载并运行主动应用程序,以完成用户所需要的计算.本文提出了一种基于XML的主动应用程序描述符AADX(Active Application Descriptor based on XML).该描述符可以用来标识主动程序并为其传输和加载提供基础.它为主动网络提供了一种有效灵活的主动程序识别和分发机制.
