A topic-specific dictionary construction algorithm for information retrieval

被引：0
|
作者：
Xu, Jingfang [1 ]
Li, Xing [1 ]
Li, Yue [1 ]
机构：
[1] Department of Electronics Engineering, Tsinghua University, Beijing 100084, China
来源：
Jisuanji Gongcheng/Computer Engineering | 2005年 / 31卷 / 21期
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D O I：
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学科分类号：
摘要：
This paper proposes a novel algorithm to construct a topic-specific dictionary, based on user query log, for information retrieval. According to their mutual information, phrases are extracted from the log and they are combined with a general dictionary to construct a topic-specific dictionary. The experiment result shows that the constructed dictionary greatly improves the retrieval performance and helps to detect many out-of-vocabulary words.
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页码：143 / 145
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