Design of a Visual Query Language for Geographic Information System on a Touch Screen

Wu, Siju; Otmane, Samir; Moreau, Guillaume; Servières, Myriam

doi:10.1007/978-3-642-39330-3_57

Cited by 3 publications

(1 citation statement)

References 7 publications

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“…A variety of approaches for visually expressing generic filter queries have been proposed in the past (Shneiderman, 1994;Seifert, 2011;Soylu et al, 2013;Russell et al, 2008). There are specialized query visualizations for spatial data, some using symbolic representations of geographical relationships (Morris et al, 2004;Wu et al, 2013) and others working directly on concrete maps (Kumar et al, 2013). The symbolic representations lend themselves to use cases that work with logical locations.…”

Section: Filtering Of Event Datamentioning

confidence: 99%

VESPa: A Pattern-based Visual Query Language for Event Sequences

Haag

Kruger

Ertl

2016

Proceedings of the 11th Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications

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Movement data can often be enriched with additional information that enables analysts to ask new questions, for instance about POIs visited and meetings that imply interactions between persons. Information on spatiotemporal events such as visits or meetings can be especially valuable for digital forensics, marketing analysis, and urban planning. Most existing query languages for movement data, however, do not take that additional information into account. We address this gap by proposing VESPa, a pattern-based graphical query language to express, check, and refine hypotheses about spatio-temporal event sequences. Using VESPa, the analyst can sketch abstract assumptions and use the pattern to query the data for matches. The applicability of our approach is demonstrated in two case studies with different datasets. We also report on a small user study in which several construction and comprehension tasks were successfully solved in an interactive implementation of the concept.

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