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Examining the effectiveness of real-time query expansion

机译：检查实时查询扩展的有效性

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Interactive query expansion (IQE) (c.f. [Efthimiadis, E. N. (1996). Query expansion. Annual Review of Information Systems and Technology, 31, 121-187]) is a potentially useful technique to help searchers formulate improved query statements, and ultimately retrieve better search results. However, IQE is seldom used in operational settings. Two possible explanations for this are that IQE is generally not integrated into searchers' established information-seeking behaviors (e.g., examining lists of documents), and it may not be offered at a time in the search when it is needed most (i.e., during the initial query formulation). These challenges can be addressed by coupling IQE more closely with familiar search activities, rather than as a separate functionality that searchers must learn. In this article we introduce and evaluate a variant of IQE known as Real-Time Query Expansion (RTQE). As a searcher enters their query in a text box at the interface, RTQE provides a list of suggested additional query terms, in effect offering query expansion options while the query is formulated. To investigate how the technique is used - and when it may be useful - we conducted a user study comparing three search interfaces: a baseline interface with no query expansion support; an interface that provides expansion options during query entry, and a third interface that provides options after queries have been submitted to a search system. The results show that offering RTQE leads to better quality initial queries, more engagement in the search, and an increase in the uptake of query expansion. However, the results also imply that care must be taken when implementing RTQE interactively. Our findings have broad implications for how IQE should be offered, and form part of our research on the development of techniques to support the increased use of query expansion.
机译：交互式查询扩展（IQE）（参见[Efthimiadis，EN（1996）。查询扩展。信息系统和技术年度回顾，第31，121-187页]）是一种潜在有用的技术，可帮助搜索者制定改进的查询语句，并最终进行检索。更好的搜索结果。但是，很少在操作设置中使用IQE。对此的两种可能解释是，IQE通常不集成到搜索者已建立的信息搜索行为中（例如，检查文档列表），并且可能在搜索中最需要的时候（即初始查询公式）。通过将IQE与熟悉的搜索活动更紧密地结合在一起，而不是将其作为搜索者必须学习的单独功能，可以解决这些挑战。在本文中，我们介绍并评估了IQE的一种变体，称为实时查询扩展（RTQE）。当搜索者在界面上的文本框中输入查询时，RTQE将提供建议的其他查询词的列表，实际上是在编制查询时提供查询扩展选项。为了研究该技术的使用方式-以及何时可能有用-我们进行了一项用户研究，比较了三种搜索界面：不支持查询扩展的基准界面；一个在查询输入期间提供扩展选项的界面，以及一个将查询提交给搜索系统后提供选项的第三个界面。结果表明，提供RTQE可以提高初始查询的质量，增加搜索的参与度，并增加查询扩展的使用率。但是，结果还意味着以交互方式实现RTQE时必须小心。我们的发现对应如何提供IQE具有广泛的意义，并且构成了我们对支持增加使用查询扩展的技术发展的研究的一部分。

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