文章基本信息

标题：Analyzing Spatiotemporal Anomalies through Interactive Visualization
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作者：Tao Zhang ; Qi Liao ; Lei Shi 等
期刊名称：Informatics
电子版ISSN：2227-9709
出版年度：2014
卷号：1
期号：1
页码：100-125
DOI：10.3390/informatics1010100
语种：English
出版社：MDPI Publishing
摘要：As we move into the big data era, data grows not just in size, but also in complexity, containing a rich set of attributes, including location and time information, such as data from mobile devices (e.g., smart phones), natural disasters (e.g., earthquake and hurricane), epidemic spread, etc. We are motivated by the rising challenge and build a visualization tool for exploring generic spatiotemporal data, i.e., records containing time location information and numeric attribute values. Since the values often evolve over time and across geographic regions, we are particularly interested in detecting and analyzing the anomalous changes over time/space. Our analytic tool is based on geographic information system and is combined with spatiotemporal data mining algorithms, as well as various data visualization techniques, such as anomaly grids and anomaly bars superimposed on the map. We study how effective the tool may guide users to find potential anomalies through demonstrating and evaluating over publicly available spatiotemporal datasets. The tool for spatiotemporal anomaly analysis and visualization is useful in many domains, such as security investigation and monitoring, situation awareness, etc.
关键词：visualization, spatiotemporal data analysis, anomaly detection