【摘要】 分析了著名搜索引擎 Google采用的 Page Rank算法 ,指出其偏重旧网页、忽视专业站点以及对网页中的超链接评估不恰当等不足之处 .改进算法考虑了网页日期这一重要因素 ,并重新计算网页中超链接对网页的影响 .网页结构中蕴涵着丰富的信息 ,在 href、title等标记中文字对网页主题有重要作用 ,利用结构标记可以辅助判断网页的主题内容 .试验结果表明 ,采用改进的算法可以提高判断网页重要性的准确度更多还原

【Abstract】 This paper analyzed Google’s algorithm on PageRank and presented some disadvantages of this algorithm. Those disadvantages are preferring to old pages, ignoring special sites and inaccurate judge of hyperlinks pointed out from one page. Furthermore, the improved algorithm was described. The experiments show that the consideration on evaluating the importance of pages can make an improvement over the original algorithm.更多还原