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Electronics and Telecommunications Research Institute (한국전자통신연구원)
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SATS: Structure-Aware Touch-Based Scrolling

  • Kim, Dohyung (SW & Content Research Laboratory, ETRI) ;
  • Gweon, Gahgene (Department of Knowledge Engineering Service, Seoul National University) ;
  • Lee, Geehyuk (Department of Computer Science, Korea Advanced Institute of Science and Technology)
  • Received : 2016.04.11
  • Accepted : 2016.11.03
  • Published : 2016.12.01
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Abstract

Non-linear document navigation refers to the process of repeatedly reading a document at different levels to provide an overview, including selective reading to search for useful information within a document under time constraints. Currently, this function is not supported well by small-screen tablets. In this study, we propose the concept of structure-aware touch-based scrolling (SATS), which allows structural document navigation using region-dependent touch gestures for non-sequential navigation within tablets or tablet-sized e-book readers. In SATS, the screen is divided into four vertical sections representing the different structural levels of a document, where dragging into the different sections allows navigating from the macro to micro levels. The implementation of a prototype is presented, as well as details of a comparative evaluation using typical non-sequential navigation tasks performed under time constraints. The results showed that SATS obtained better performance, higher user satisfaction, and a lower usability workload compared with a conventional structural overview interface.

Keywords

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