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MHCI
2009
Springer

Designing phrase builder: a mobile real-time query expansion interface

8 years 11 months ago
Designing phrase builder: a mobile real-time query expansion interface
As users enter web queries, real-time query expansion (RTQE) interfaces offer suggestions based on an index garnered from query logs. In selecting a suggestion, users can potentially reduce keystrokes, which can be very beneficial on mobile devices with deficient input means. Unfortunately, RTQE interfaces typically provide little assistance when only parts of an intended query appear among the suggestion choices. In this paper, we introduce Phrase Builder, an RTQE interface that reduces keystrokes by facilitating the selection of individual query words and by leveraging back-off query techniques to offer completions for outof-index queries. We describe how we implemented a small memory footprint index and retrieval algorithm, and discuss lessons learned from three versions of the user interface, which was iteratively designed through user studies. Compared to standard auto-completion and typing, the last version of Phrase Builder reduced more keystrokes-per-character, was perceived t...
Tim Paek, Bongshin Lee, Bo Thiesson
Added 27 May 2010
Updated 27 May 2010
Type Conference
Year 2009
Where MHCI
Authors Tim Paek, Bongshin Lee, Bo Thiesson
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