计算机科学 ›› 2016, Vol. 43 ›› Issue (2): 86-88.doi: 10.11896/j.issn.1002-137X.2016.02.019
• 2015年中国计算机学会人工智能会议 • 上一篇 下一篇
王旭阳,任国盛
WANG Xu-yang and REN Guo-sheng
摘要： 针对WPR(Weighted PageRank) 算法存在的在网页搜索方面的主题漂移和偏重旧网页的现象,综合网页的主题特征和最近搜索周期网页的被引用频率两个因素,提出了一种改进的算法WTFPR(Weighted Topic Frequency PageRank)。该算法通过内容分析,采用改进的TD-IDF算法来解决网页相关性,改善主题漂移现象；通过网页的最近搜索周期的被引用频率来提高那些较新而且价值较高的网页的PR值,从而改善偏重旧网页的现象。仿真结果表明,改进后的算法与 WPR 算法相比获得了更好的效果。
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