A hierarchical model of a FTP search engine with applications

被引：0
|
作者：
Hu, Liang [1 ]
Zhang, Xiaoshuan [2 ]
Zhao, Ming [2 ]
Guo, Lili [1 ]
Gong, Weiwei [3 ]
Fu, Zetian [1 ]
机构：
[1] China Agr Univ, Coll Engn, Beijing 100083, Peoples R China
[2] China Agr Univ, Coll Informat & Elect Engn, Beijing 100083, Peoples R China
[3] China Agr Univ, Coll Econ & Management, Beijing 100083, Peoples R China
来源：
NEW ZEALAND JOURNAL OF AGRICULTURAL RESEARCH | 2007年 / 50卷 / 05期
关键词：
FTP search engine; hierarchical model; information retrieval; temporal effectiveness;
D O I：
10.1080/00288230709510333
中图分类号：
S [农业科学];
学科分类号：
09 ;
摘要：
Because the traditional FTP search engines usually adopt centrallsed spiders to collect Bata, insufficient temporal effectiveness is their major demerit. For solving this problem, this paper presents an efficient hierarchical FTP search engine model that deploys the spider agent on the node host of some specific network for collecting file data of FTP servers. The key technologies involve a regional responsibility mechanism, a search mechanism based on the asynchronous retrieval technology and a PAT Tree storage mechanism. The simulation shows that the responding tirne is less than that of the traditional system and the temporal effectiveness arrives at the application level. In addition, the test results show that the architecture has' -'good scalability.
引用
收藏
页码：641 / 646
页数：6
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