街道环境下定向任务下青年学生的地标选择偏好

IF 1.2 Q4 TELECOMMUNICATIONS
Z. Fang, Lubin Wang, Fan Yang, Fangli Guan
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引用次数: 0

摘要

地标是定位中重要的空间参考,可以帮助行人理解自身与环境的相对空间关系,但并非所有的地标都适合定位。行人通常根据自己的认知来选择合适的行人,这是一个耗时的过程。如果我们能够从第一人称视角预测受欢迎的地标(大多数人喜欢的),定位就会容易得多。为了更好地理解地标选择行为,本研究设计了一个虚拟街道环境下的定向实验,调查21-31岁的青年学生对地标的偏好。在选择结果的基础上,本文进一步构建随机森林模型来选择受欢迎的地标。结果表明,一个或两个地标足以满足青少年学生的定位需求,并且在大多数场景中选择受欢迎的地标显著减少了定位时间。此外,分类模型在热门地标选择上取得了较好的表现,预测结果的F1得分和AUC分别达到0.820和0.855,其中地标路线偏差、视觉显著性和语义显著性是影响青年学生选择的重要因素。研究结果可为行人导航系统的优化提供可行的参考。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Landmark selection preferences of young students under orientation task within street environment
ABSTRACT Landmarks are important spatial reference in orientation because they can help pedestrians understand the relative spatial relationship between environment and themselves, yet not all landmarks are suitable for orientation. Pedestrians usually select the proper ones based on their own cognition, which is a time-consuming process. If we can predict popular landmarks (preferred by most people) from a first-person perspective, orientation will be much easier. To better understand landmark selection behaviour, the research in this paper designs an orientation experiment within virtual street environment to investigate young students aged 21–31 about preferences for landmarks. Based on the selection results, this paper further constructs a random forest model to choose popular landmarks. Results indicate that one or two landmarks are enough to meet young students’ needs for orientation, and the time spent on orientation significantly reduces by using chosen popular landmarks in most scenes. In addition, classification model achieves a desirable performance in popular landmark selection: F1 score and AUC of the predictive results reached 0.820 and 0.855, respectively, where landmark route deviation, visual salience and semantic salience serve as essential factors in influencing young students’ selection. These findings can provide a feasible reference for optimising pedestrian navigation system.
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来源期刊
CiteScore
3.70
自引率
8.70%
发文量
12
期刊介绍: The aim of this interdisciplinary and international journal is to provide a forum for the exchange of original ideas, techniques, designs and experiences in the rapidly growing field of location based services on networked mobile devices. It is intended to interest those who design, implement and deliver location based services in a wide range of contexts. Published research will span the field from location based computing and next-generation interfaces through telecom location architectures to business models and the social implications of this technology. The diversity of content echoes the extended nature of the chain of players required to make location based services a reality.
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