GTMapLens: Interactive Lens for Geo‐Text Data Browsing on Map
GTMapLens: Interactive Lens for Geo‐Text Data Browsing on Map
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DOI：
10.1111/cgf.13995
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发表时间：
2020-06
影响因子：
2.5
通讯作者：
Chao Ma;Ye Zhao;Shamal Al-Dohuki;Jing Yang;X. Ye;Farah Kamw;Md Amiruzzaman
中科院分区：
文献类型：
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作者：
Chao Ma;Ye Zhao;Shamal Al-Dohuki;Jing Yang;X. Ye;Farah Kamw;Md Amiruzzaman
包含地理空间语义的数据（例如地理标记的推文、旅游博客和犯罪报告）将自然语言文本与地理位置相关联。本文提出了一种基于镜头的视觉交互技术GTMapLens，可以灵活地浏览地图上的地理文本数据。它允许用户通过使用可移动镜头来进行动态焦点+上下文探索，浏览地理区域，找到感兴趣的位置，并进行比较和深入研究。地理文本数据的可视化方式使用户可以随着镜头的移动轻松感知潜在的地理空间语义。基于多学科领域专家的需求分析，开发了一套镜头交互技术，包括关键词控制、路径管理、上下文可视化和快照锚点。它们允许用户实现对地理文本数据的引导和可控探索。分层数据模型通过加速从地理文本数据库中的数据检索来实现交互式镜头操作。通过真实世界数据集的评估来展示 GTMapLens 的可用性和有效性。
Data containing geospatial semantics, such as geotagged tweets, travel blogs, and crime reports, associates natural language texts with geographical locations. This paper presents a lens‐based visual interaction technique, GTMapLens, to flexibly browse the geo‐text data on a map. It allows users to perform dynamic focus+context exploration by using movable lenses to browse geographical regions, find locations of interest, and perform comparative and drill‐down studies. Geo‐text data is visualized in a way that users can easily perceive the underlying geospatial semantics along with lens moving. Based on a requirement analysis with a cohort of multidisciplinary domain experts, a set of lens interaction techniques are developed including keywords control, path management, context visualization, and snapshot anchors. They allow users to achieve a guided and controllable exploration of geo‐text data. A hierarchical data model enables the interactive lens operations by accelerated data retrieval from a geo‐text database. Evaluation with real‐world datasets is presented to show the usability and effectiveness of GTMapLens.