| 基于词项扩展的XML信息检索反馈技术 |
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| 引用本文： | 温馨,陈群,娄颖. 基于词项扩展的XML信息检索反馈技术[J]. 计算机工程, 2011, 37(20): 36-38. DOI: 10.3969/j.issn.1000-3428.2011.20.013 |
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| 作者姓名： | 温馨 陈群 娄颖 |
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| 作者单位： | 1. 西北工业大学计算机学院,西安,710129
2. 西北工业大学计算机学院,西安710129; 河南科技大学电信工程学院,河南洛阳471003 |
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| 基金项目： | 国家“863”计划基金资助重点项目(2009AA1Z134);国家自然科学基金资助项目(60803043,60720106001) |
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| 摘 要： | 为提高XML信息检索的查询准确率,提出一种基于词项扩展的XML信息检索反馈技术.利用词项所在节点的语义权重、词项与查询词间的相邻频度、共现程度,评估词项权重并排序,取权重较大的词项对初始检索词进行扩展,给出各因子的计算方法.在Wikipedia2009数据集上的实验结果表明,扩展后的查询准确率较高.
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| 关 键 词： | XML信息检索 词项扩展 反馈 语义权重 相邻频度 |
| 收稿时间： | 2011-04-12 |
Feedback Technique for XML Information Retrieval Based on Term Expansion |
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| WEN Xin,CHEN Qun,LOU Ying. Feedback Technique for XML Information Retrieval Based on Term Expansion[J]. Computer Engineering, 2011, 37(20): 36-38. DOI: 10.3969/j.issn.1000-3428.2011.20.013 |
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| Authors: | WEN Xin CHEN Qun LOU Ying |
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| Affiliation: | 1,2(1.School of Computer Science,Northwestern Polytechnical University,Xi’an 710129,China;2.Electronic Information Engineering College,University of Technology of Henan,Luoyang 471003,China) |
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| Abstract: | In order to improve the precision rate of XML information retrieval,this paper proposes a feedback technique for XML information retrieval based on term expansion.It considers lexical semantic weights of nodes,adjacency frequency between lexical items and queries,and local co-occurrence between terms and keywords in computing term weight.Experimental results on Wikipedia2009 data set show that the proposed technique can improve the precision rate. |
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| Keywords: | XML information retrieval term expansion feedback semantic weights adjacency frequency |
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