Microsoft Research
Computational User Experiences

Phrase Builder: A Mobile Real-Time Query Expansion Interface

In conjunction with MLAS (Machine Learning and Applied Statistics), we introduce Phrase Builder, an RTQE interface that reduces keystrokes by facilitating the selection of individual words in addition to whole phrases, and by leveraging back-off query techniques to offer suggestions for out-of-index queries.

 

Project Team

Phrase Builder

Phrase Builder     

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. We designed and developed an RTQE interface called Phrase Builder that reduces keystrokes by facilitating the selection of individual query words and by leveraging back-off query techniques to offer completions for out-of-index queries.

 

Phrase Builder Video [.wmv (2.7MB), .mov (3.2MB)]

Publications

Designing Phrase Builder: A Mobile Real-Time Query Expansion Interface

Tim Paek, Bongshin Lee, Bo Thiesson

Proceedings of MobileHCI 2009

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