A Mobile Interface for Navigating Hierarchical Information Space$
Journal of Visual Languages and Computing 31 (2015) 48–69 Contents lists available at ScienceDirect Journal of Visual Languages and Computing journal homepage: www.elsevier.com/locate/jvlc A mobile interface for navigating hierarchical information space$ Abhishek P. Chhetri a,n, Kang Zhang b,c, Eakta Jain c,d a Computer Engineering Program, Erik Jonsson School of Engineering and Computer Science, University of Texas at Dallas, Richardson, TX 65080-3021, USA b School of Software Engineering, Tianjin University, Tianjin, China c Department of Computer Science, University of Texas at Dallas, Richardson, TX 65080-3021, USA d Texas Instruments, Dallas, TX, USA article info abstract Article history: This paper presents ERELT (Enhanced Radial Edgeless Tree), a tree visualization approach Received 2 June 2015 on modern mobile devices. ERELT is designed to offer a clear visualization of any tree Accepted 5 October 2015 structure with intuitive interaction. Such visualization can assist users in interacting with Available online 22 October 2015 a hierarchical structure such as a media collection, file system, etc. General terms: In the ERELT visualization, a subset of the tree is displayed at a time. The displayed tree Algorithms size depends on the maximum number of tree elements that can be put on the screen Design while maintaining clarity. Users can quickly navigate to the hidden parts of the tree Human factors through touch-based gestures. We have conducted a user study to evaluate this visuali- zation for a music collection. The study results show that this approach reduces the time Keywords: and effort in navigating tree structures for exploration and search tasks.
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