基于Nutch的垂直搜索引擎系统  

Vertical Search Engine System Based on Nutch

作　　者：李耀芳[1] 张涛[2] 

机构地区：[1]天津城市建设学院电子与信息工程系,天津300384 [2]南开大学信息技术科学学院,天津300071

出　　处：《计算机系统应用》2011年第9期193-196,47,共5页Computer Systems & Applications

基　　金：国家科技支撑计划(2007BAH10B01)

摘　　要：由于通用搜索引擎搜索精度不高,而国内各大物流港口搜索有效性较低,设计基于Nutch的港口物流垂直搜索引擎系统,实现了各个港口物流信息的快捷查询和共享。系统采用了基于向量空间模型的主题相关度判别算法并对该算法进行改进,加入元数据判别机制和重要标签所包含关键词的加权处理。加入"隧道处理"机制,以处理主题网页分离的问题,并且修改了检索结果排序的源代码,使其更适应垂直搜索引擎的要求。Due to the low accuracy in current general search engines, and the poor search effectiveness of lower logistics in major domestic ports, the paper designs a port logistics Nutch-based vertical search engine system which achieves fast query and logistics information sharing. The system uses a theme based on vector space model identification algorithm and the relevance of the algorithm is improved by adding identification mechanism and the importance of metadata tags that contain the keywords of the weighting. Adding ＂tunnel handling＂ mechanism to deal with separation issues topic page, and modify the source code to sort search results to make it more responsive to the requirements of vertical search engines.

关 键 词：Nutch垂直搜索 向量空间模型 索引检索 

分 类 号：TP391.3[自动化与计算机技术—计算机应用技术]