Information Retrieval System for XML Documents

Information Retrieval System for XML Documents
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XML文档信息检索系统

DOI：
10.1007/3-540-46146-9_75
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发表时间：
2002
期刊：
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影响因子：
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通讯作者：
Shunsuke Uemura
Shunsuke Uemura
中科院分区：
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文献类型：
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作者：
K. Hatano;H. Kinutani;Masatoshi Yoshikawa;Shunsuke Uemura

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在文档信息检索的研究领域中，IR系统返回的检索结果的单位是整个文档或文档片段，如段落检索中的一个段落。基于向量空间模型的IR系统计算单元的特征向量并计算单元与查询之间的相似度。然而，检索结果的单位不适合文档信息检索，因为它们与用户正在搜索的信息不一致。因此，检索结果的单位应该是XML文档的一部分，例如章、节或小节。也就是说，我们认为文档信息检索最重要的问题是定义对用户有意义的检索结果的单位。由于 XML 是 Internet 上的标准文档格式，并且 XML 文档由内容和文档结构组成，因此很容易构造 XML 文档的适当部分作为检索结果。在本文中，我们提出了一种有效的 XML 文档 IR 系统，该系统通过分析 XML 文档结构自动定义适当的检索结果单元。我们进行了实验评估并验证了 XML IR 系统的有效性。此外，我们还为 XML 信息检索定义了新的召回率和精确度度量，以评估我们的 XML IR 系统。
In the research field of document information retrieval, the unit of retrieval results returned by IR systems is a whole document or a document fragment, like a paragraph in passage retrieval. IR systems based on the vector space model compute feature vectors of the units and calculate the similarities between the units and the query. However, the unit of retrieval results are not suitable for document information retrieval since they are not congruent with the information which users are searching for. Therefore, the unit of retrieval results should be a portion of the XML document, such as a chapter, section, or subsection. That is, we think the most important concern of document information retrieval is to define the unit of retrieval results, that is meaningful for users. It is easy to construct the appropriate portion of XML documents as retrieval results because XML is a standard document format on the Internet and because XML documents consist of contents and document structures. In this paper, we propose an effective IR system for XML documents that automatically defines an appropriate unit of retrieval results by analyzing the XML document structure. We performed experimental evaluations and verified the effectiveness of our XML IR system. In addition, we also defined new recall and precision measures for XML information retrieval in order to evaluate our XML IR system.