西安交通大学电子与信息工程学院,西安,710049
网络首发:2009-04-10,
纸质出版:2009
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张云, 冯博琴. 利用标签的层次化搜索结果聚类方法[J]. 西安交通大学学报, 2009,43(4):18-21+38.
Clustering Method Based on Label Hierarchical Search Results[J]. 2009, 43(4): 18-21+38.
为了提高搜索引擎返回结果的可浏览性
满足用户对查询质量的要求
提出了一种层次化搜索结果聚类方法.首先
从搜索引擎的返回结果提取出文档集
并对每一个文档进行词干化、去除停用词等操作.然后
根据词共现信息来发现文档集中的频繁2元组
再将2元组扩展为n元组
对所有元组进行去冗余、重要性排序
从而获得候选聚类标签.最后
基于该标签对返回结果中的文档进行分配与聚集
形成层次化聚类结果.实验结果表明
所提方法可以通过获得的准确、可读性较好的聚类标签
帮助用户有效地浏览搜索引擎返回的结果.与Vivisimo、STC、Lingo算法比较
以及在多个评价指标上的综合实验结果也表明
该方法是有效的.
A novel clustering method based on hierarchical search results is proposed to facilitate users browsing web search results produced by search engines and to locate the interesting information quickly and efficiently. The snippets are collected and preprocessed. Frequent bigrams are identified based on term co-occurrence information
from which n-grams are obtained. After filtering out the redundant phrases and sorting by significance
candidate cluster labels are obtained. Finally
the snippets are grouped into clusters based on the candidate cluster labels
and a hierarchical result is generated. Experimental results show that the proposed method can generate accurate and highly readable cluster labels
which can help users effectively browse through the search results returned by search engine
and locating their interesting information. The method outperforms Vivisimo
Lingo and STC algorithms on different indexes. A comparison on Chinese dataset further illustrates the validity of the method.
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