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Carlea Holl-Jensen||cholljen@umd.edu


HCIL-2012-30

Monroe, M., Lan, R., Morales del Olmo, J., Shneiderman, B., Plaisant, C., Millstein, J. (October 2012)
The Challenges of Specifying Intervals and Absences in Temporal Queries: A Graphical Language Approach
Published in Proc. Of ACM Conference on Human-Computer Interaction (CHI 2013), 2349-2358. [Published Version]
HCIL-2012-30

In our burgeoning world of ubiquitous sensors and affordable data storage, records of timestamped events are being produced across nearly every domain of personal and professional computing. This data ranges from government-funded medical databases, to the meticulously tabulated comings and goings of obsessive self-trackers. Across all domains, however, is the need to search these records for meaningful patterns of events. This paper reports on a two-part user study, as well as a series of early tests and interviews with clinical researchers, that informed the development of two temporal query interfaces: a basic, menu-based interface and an advanced, graphic-based interface. While the scope of temporal query is very broad, this work focuses on two particularly complex and critical facets of temporal event sequences: intervals (events with both a start time and an end time), and the absence of an event. We describe how uses encounter a common set of difficulties when expressing such queries, and propose solutions to help overcome them. Finally, we report on 2 case studies with epidemiologists at the US Army Pharmacovigilance Center, illustrating how both query interfaces were used to study patterns of drug use.



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Science 2.0: Studying Collaboration in Socio-Technical Systems
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