基于Internet的农业信息垂直搜索引擎的设计

The agriculture information vertical search engine design based on Internet

农业信息化建设的飞速发展,使得互联网上农业信息迅速增长,但由于使用通用搜索引擎检索出的信息庞杂无序,农业主题信息的获取仍十分困难。因此,搜索引擎有向专业化、领域化方向发展的趋势。本文设立了一种基于特征词匹配算法的垂直搜索引擎设计方案,该方案通过建立农业信息特征词词典,采用向量空间模型来对网页主题进行识别,从而提高信息检索的准确率。并采用基于超级链接分析的方法,使主题相关的URL优先得到访问,提高了搜索引擎的效率。

Agricultural information on Internet increases fast because of quick development of information-driven agriculture＇s construction.But it is still very difficult to gain the information about agriculture since numerous and disordered information based on the integrated search engine.So search engine tends to specialization and domain.This paper introduces one kind of vertical search engine method based on characteristic words matching arithmetic.And this method adopts vector space model to identify the web subject by setting up dictionary on agricultural information characteristic words,which improves the exact rate during information check.Moreover,adopts the super-link analysis method which makes URL,relevant to subject,access first;and improves the rate of search engine.