摘要
本文设计并实现了一个食品安全新闻的爬虫。为了提高爬虫爬取食品安全新闻数据的准确率,建立了本体模型,并用向量空间模型去除主题相关度小的新闻。结果表明该食品安全爬虫爬取有关食品安全新闻的准确率较高,达到了预期要求。
This paper designed and implemented a crawler about food safety news. In order to improve the accuracy rate while crawling food safety news data, this paper established ontology model and used the vector space model to remove the news with small relevancy. Results showed that the crawler had high accuracy in crawling food safety news, which met the requirements.
出处
《农业网络信息》
2015年第5期27-30,共4页
Agriculture Network Information
基金
国家科技支撑计划项目(编号:2014BAD04B05
2012BAD28B02
2012BAK17B09
2013BAD19B09)
