focused crawler

基本解释

Focused crawler is a main component of a focused search engine.
面向主题搜索引擎的核心组成部分是主题爬虫。
Finally we used this new algorithm to design and implement a focused crawler prototype system.
最后我们利用该改进算法设计并实现了一个主题爬虫原型系统。
Traditional focused crawler is targeting web pages that are relevant to some specific topics. But some applications, such as web directory, are providing users with relevant websites.
传统的聚焦爬虫抓取的目标是与某一特定主题内容相关的网页，而在有些应用中，如网络目录，更多的是给用户提供主题相关网站。

聚焦爬虫
Initial performance results show that this rule-based Web-crawling approach uses linkage statistics among topics to improve a baseline focused crawler's harvest rate and coverage.
这种基于类间规则的聚焦爬行方法借助baseline聚焦爬虫的架构，应用朴素的贝叶斯分类器并利用主题团间链接的统计关系构造规则找到在一定链接距离内的“未来回报”页面，并通过实验对该算法的性能进行分析、评价，证明其对聚焦爬虫的爬行收获率和覆盖率有很好的改善。
主题爬虫
In addition,an ideal focused crawler retrieves the maximal set of relevant pages while simultaneously traversing the minimal number of irrelevant pages on the Web.
而一个理想的主题爬虫需要最大限度的爬行与预定主题最相关的网页,并最小限度的爬行不相关的网页。
网络蜘蛛
Currently, accuracy of Chinese Word Segmentation and Correlation Prediction are still to be improved, search strategy of Focused Crawler has yet to be further improved to enhance search engine coverage and efficiency.
目前，垂直搜索引擎的中文分词和主题预测有待进一步提高精度，网络蜘蛛的搜索策略也有待进一步改进以提高搜索引擎的覆盖率和效率。