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In introduction to HCI class.

Dynamic Query Interface for Spatial Proximity Query with Degree-of-Interest Varied by Distance to Query Point

Myoungsu Cho, Bohyoung Kim, Yeong-Gil Shin, Dong Kyun Jeong, and Jinwook Seo / 2010



  • Myoungsu Cho, Seoul National University, Seoul, Republic of Korea
  • Bohyoung Kim, Seoul National University Bundang Hospital, Seongnam, Republic of Korea
  • Dong Kyun Jeong
  • Jinwook Seo, Seoul National University, Seoul, Republic of Korea


Dynamic queries are effective tools for interactively querying large datasets. They continuously update the data filtered from the database and visualize. Many information visualization research and commercial systems adopted dynamic queries as an essential component. In this paper we present an interactive query interface called TrapezoidBox to support spatial proximity queries where users' degree of interest varies depending upon the degree of separation from the point of interest. Spatial proximity queries are commonly built in information seeking tasks especially on online maps. If not impossible, it is hard to formulate spatial proximity queries using existing dynamic query widgets such as range sliders. TrapezoidBox allows users to easily build spatial proximity queries by interactively adjusting a trapezoidal function. Our controlled user study results show that TrapezoidBox has several advantages over a baseline interface with range sliders.


This work was supported by Samsung Advanced Institute of Technology, ROSAEC Center, Brain Korea 21 and Institute of Computer Technology.