【摘要】 为克服传统主题爬行器在爬行速度和主题预测精度上的不足,提高爬行器的查准率和查全率,根据当前常用主题爬行策略的特点,通过页面辐射空间的引入将主题策略中基于链接分析和基于内容分析的方法相结合,并嵌入启发式算法,提出一种基于启发式的主题爬行算法。实验结果表明,该算法较常用爬行算法有较好的爬行效率。更多还原

【Abstract】 To solve the traditional topic crawler’s drawback in terms of precision and efficiency as well as improve the precise ratio and recall ratio of general search engine results,a new kind of topic-oriented crawling aJgorithm is put forward,according to the cunent features of the topic - oriented crawling methods.The methods based on the link analysis and the content analysis of the topic methods is combined through page radiation space to combine,with heuristic algorithm embed.The experiment result shows that this algorithm is more efficient than the usual algorithms.更多还原