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Optimizing a Personalized Cellphone Keypad

  • Joonseok Lee
  • Bob McKay
Part of the Lecture Notes in Computer Science book series (LNCS, volume 6935)

Abstract

Current layouts for alphabetic input on mobile phone keypads are inefficient. We propose a genetic algorithm (GA) to find a suitable keypad layout for each user, based on their personal text history. It incorporates codes for frequent multigrams.

We optimize for two-thumb use, minimizing the number of strokes, and consecutive use of the same key or the same hand. Using these criteria, the algorithm re-arranges the characters on a 10-key pad. We demonstrate that this arrangement can generate a more effective layout, especially for SMS-style messages. Substantial savings are verified by computational analysis.

Keywords

Keypad layout adaptive optimized personalized multigram 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2011

Authors and Affiliations

  • Joonseok Lee
    • 1
  • Bob McKay
    • 2
  1. 1.SMLV Lab, College of ComputingGeorgia TechAtlantaUSA
  2. 2.SC Lab, Comp. Sci. and Eng.Seoul National UniversitySeoulKorea

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