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Temporal document retrieval model for business news archives

机译:商业新闻档案的时态文档检索模型

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Temporal expressions occurring in business news, such as "last week" or "at the end of this month," carry important information about the time context of the news document and were proved to be useful for document retrieval. We found that about 10% of these expressions are difficult to project onto the calendar due to the uncertainty about their bounds. This paper introduces a novel approach to representing temporal expressions. A user study is conducted to measure the degree of uncertainty for selected temporal expressions and a method for representing uncertainty based on fuzzy numbers is proposed. The classical Vector Space Model is extended to the Temporal Document Retrieval Model (TDRM) that incorporates the proposed fuzzy representations of temporal expressions. (C) 2004 Elsevier Ltd. All rights reserved.
机译:商业新闻中出现的时间表达,例如“上周”或“本月末”,携带有关新闻文档时间上下文的重要信息,并被证明对文档检索很有用。我们发现这些表达式中约有10%由于边界不确定而很难投影到日历上。本文介绍了一种表示时间表达的新颖方法。进行了一项用户研究,以测量所选时间表达式的不确定性程度,并提出了一种基于模糊数的不确定性表示方法。经典向量空间模型扩展到合并了拟议的时间表达模糊表示的时间文档检索模型(TDRM)。 (C)2004 Elsevier Ltd.保留所有权利。

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