Designing for Exploratory Search on Touch Devices

Salvatore Andolina, Diogo Cabral, Salvatore Andolina, Tuukka Ruotsalo, Giulio Jacucci, Khalil Klouche, Andrea Bellucci

Research output: Chapter in Book/Report/Conference proceedingConference contribution

46 Citations (Scopus)


Exploratory search confront users with challenges in expressing search intents as the current search interfaces require investigating result listings to identify search directions, iterative typing, and reformulating queries. We present the design of Exploration Wall, a touch-based search user interface that allows incremental exploration and sense-making of large information spaces by combining entity search, flexible use of result entities as query parameters, and spatial configuration of search streams that are visualized for interaction. Entities can be flexibly reused to modify and create new search streams, and manipulated to inspect their relationships with other entities. Data comprising of task-based experiments comparing Exploration Wall with conventional search user interface indicate that Exploration Wall achieves significantly improved recall for exploratory search tasks while preserving precision. Subjective feedback supports our design choices and indicates improved user satisfaction and engagement. Our findings can help to design user interfaces that can effectively support exploratory search on touch devices.
Original languageEnglish
Title of host publicationProceedings of the 33rd Annual ACM Conference on Human Factors in Computing Systems (CHI'15)
Number of pages10
Publication statusPublished - 2015

All Science Journal Classification (ASJC) codes

  • Software
  • Human-Computer Interaction
  • Computer Graphics and Computer-Aided Design


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