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In introduction to HCI class.

Tree Visualization Methods for Hierarchical Structures

Hyunjoo Song, Bohyoung Kim, Bongshin Lee, and Jinwook Seo / 2010



  • Hyunjoo Song, Seoul National University, Seoul, Republic of Korea
  • Bongshin Lee, Microsoft Research, Redmond, WA, USA
  • Bohyoung Kim, Seoul National University Bundang Hospital, Seongnam, Republic of Korea
  • Jinwook Seo, Seoul National University, Seoul, Republic of Korea

Project Description

Hierarchical structures with large fan-outs are hard to browse and understand. In the conventional node-link tree visualization, the screen quickly becomes overcrowded as users open nodes that have too many child nodes to fit in one screen. To address this problem, we propose two extensions to the conventional node-link tree visualization: a list view with a scrollbar and a multi-column interface. We compared them against the conventional tree visualization interface in a user study.


This work was supported by the Engineering Research Center of Excellence Program of Korea (MEST/KOSEF, R11-2008-007-01002-0), KOSEF grant (No. 2009-0064949), and the Brain Korea 21 Project. The ICT at Seoul National University provided research facilities for this study.