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首页> 外文会议>Annual Meeting of the Association for Information Science and Technology >Multi-Aspect Information Use Task Performance: The Roles of Topic Knowledge, Task Structure, and Task Stage
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Multi-Aspect Information Use Task Performance: The Roles of Topic Knowledge, Task Structure, and Task Stage

机译：多方面信息使用任务性能：主题知识，任务结构和任务阶段的角色

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Information search, quite often, is not an isolated activity, but is accompanied by the use of the located information to generate some outcome. Frequently seen are "complex" tasks that consist of multiple aspects and can be divided into sub-tasks and/or finished in multiple sessions. This paper explores how search systems may help users with their multi-aspect tasks by examining whether, and how user knowledge and task structure play roles in leading to better work task performance. A 3-session lab experiment was conducted with 24 participants, each coming 3 times to work on 3 subtasks of a general task, couched either as the "parallel" or the "dependent" structure type. The overall task was to write a report on the general topic, with interim documents produced for each subtask. Results show that users' previous knowledge of task topics positively correlated with task performance, but the evolving and the exit knowledge did not. Neither task session nor task structure significantly affected session task performance. However, there was a tendency that those users with different levels of task knowledge performed differently in different tasks: higher knowledge users tended to perform better in the parallel task than in the dependent; lower knowledge users tended to perform better in the dependent task than in the parallel. These results can possibly be explained by users' searching and writing behaviors. Our findings help understand factors influencing information use task performance, and have implications on designing personalized systems that support information use task accomplishment.
机译：信息搜索通常不是孤立的活动，而是伴随着所处信息来生成一些结果。经常看到是由多个方面组成的“复杂”任务，并且可以分为子任务和/或在多个会话中完成。本文探讨搜索系统如何通过检查用户知识和任务结构如何扮演角色来帮助用户使用多方面任务，从而导致更好的工作任务性能。 3次会议实验室实验与24名参与者进行，每个参与者进行3次，以便在3个常规任务的子任务上工作，作为“平行”或“依赖”结构类型。整体任务是在每个子任务中编写关于常规主题的报告。结果表明，用户对任务主题的先前知识与任务性能正相关，但不断发展和退出知识没有。任务会话和任务结构都不会显着影响会话任务性能。但是，在不同的任务中具有不同的任务知识级别的那些用户的趋势：更高的知识用户倾向于在并行任务中更好地执行比依赖者更好;较低知识用户往往在依赖任务中更好地执行比并行。这些结果可能是由用户搜索和写作行为解释的。我们的研究结果有助于了解影响信息使用任务性能的因素，并对设计支持信息使用任务成就的个性化系统具有影响。

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