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Three important determinants of user performance for database retrieval

机译：数据库检索用户性能的三个重要决定因素

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摘要

Three important factors that determine user performance during database retrieval are representation realism, expressive ease, and task complexity. Representation realism is the level of abstraction used when formulating queries. Expressive ease is the syntactic flexibility permitted when formulating queries. Task complexity is the level of difficulty of queries. A controlled laboratory experiment was conducted to assess the effects of these three factors on user productivity during database retrieval. The independent variables were representation realism (high versus low), expressive ease (high versus low), and query complexity (simple versus complex). The dependent variables were query accuracy and query time. Results show that all these three factors significantly affected user performance during database retrieval. However, their relative impact on query accuracy and query time differed. Moreover, these factors interacted in unique ways to moderate query accuracy and query time. Besides verifying prior empirical findings, these results offer several suggestions for future research and development work in the area of database retrieval.
机译：决定数据库检索过程中用户性能的三个重要因素是表示真实性，表达容易程度和任务复杂性。表示现实主义是制定查询时使用的抽象级别。表达轻松是制定查询时允许的语法灵活性。任务复杂度是查询的难度级别。进行了受控实验室实验，以评估数据库检索过程中这三个因素对用户生产力的影响。自变量是表示现实性（高与低），表达容易程度（高与低）和查询复杂度（简单与复杂）。因变量是查询准确性和查询时间。结果表明，所有这三个因素都极大地影响了数据库检索期间的用户性能。但是，它们对查询准确性和查询时间的相对影响有所不同。此外，这些因素以独特的方式相互作用以降低查询准确性和查询时间。除了验证先前的经验发现之外，这些结果还为数据库检索领域的未来研究和开发工作提供了一些建议。

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