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arXiv 1005.1340cs.HCcs.IR
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网络搜索中认知负荷的分布

Distribution of Cognitive Load in Web Search

Jacek Gwizdka

摘要:

搜索任务和系统都会影响信息搜索过程中对认知资源的需求。在某些情况下,对一个人的要求可能太高。这篇文章有三个目标。首先,它提出和批评的方法来衡量认知负荷。其次,它探讨了跨搜索任务阶段的负载分布。最后,它旨在提高我们的理解的因素影响认知负荷水平的信息搜索。为此,进行了一项有48名参与者的受控网络搜索实验。交互日志用于将搜索任务半自动地划分为任务阶段。认知负荷评估使用双任务方法的一个新的变种。平均认知负荷不同的搜索任务阶段。它是显着更高的查询公式和用户描述的相关文件相比,检查搜索结果和查看个别文件。语义信息显示旁边的搜索结果列表中的一个研究的接口被发现,以减少心理需求在查询制定和检查的搜索结果列表。这些发现表明,动态认知负荷的变化可以检测到搜索任务。认知负荷的动态评估是情报科学的核心兴趣,因为它丰富了我们的认知需求的理解,从事搜索过程中的任务和交互式信息检索系统的使用。

英文摘要:

The search task and the system both affect the demand on cognitive resources during information search. In some situations, the demands may become too high for a person. This article has a three-fold goal. First, it presents and critiques methods to measure cognitive load. Second, it explores the distribution of load across search task stages. Finally, it seeks to improve our understanding of factors affecting cognitive load levels in information search. To this end, a controlled Web search experiment with forty-eight participants was conducted. Interaction logs were used to segment search tasks semi-automatically into task stages. Cognitive load was assessed using a new variant of the dual-task method. Average cognitive load was found to vary by search task stages. It was significantly higher during query formulation and user description of a relevant document as compared to examining search results and viewing individual documents. Semantic information shown next to the search results lists in one of the studied interfaces was found to decrease mental demands during query formulation and examination of the search results list. These findings demonstrate that changes in dynamic cognitive load can be detected within search tasks. Dynamic assessment of cognitive load is of core interest to information science because it enriches our understanding of cognitive demands imposed on people engaged in the search process by a task and the interactive information retrieval system employed.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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