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Indirect text entry using one or two keys

Published: 23 October 2006 Publication History

Abstract

This paper introduces a new descriptive model for indirect text composition facilities that is based on the notion of a containment hierarchy. This paper also demonstrates a novel, computer-aided technique for the design of indirect text selection interfaces -- one in which Huffman coding is used for the derivation of the containment hierarchy. This approach guarantees the derivation of optimal containment hierarchies, insofar as mean encoding length. This paper describes an empirical study of two two-key indirect text entry variants and compares them to one another and to the predictive model. The intended application of these techniques is the design of improved indirect text entry facilities for the users of AAC systems.

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cover image ACM Conferences
Assets '06: Proceedings of the 8th international ACM SIGACCESS conference on Computers and accessibility
October 2006
316 pages
ISBN:1595932909
DOI:10.1145/1168987
Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected]

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Publication History

Published: 23 October 2006

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Author Tags

  1. augmentative and alternative communication (AAC)
  2. indirect text entry
  3. information theory
  4. interface evaluation
  5. interventions for communication disorders
  6. scanning
  7. speech generating devices (SGD)
  8. voice output communication aids (VOCA)

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  • (2022)A Performance Evaluation of Nomon: A Flexible Interface for Noisy Single-Switch UsersProceedings of the 2022 CHI Conference on Human Factors in Computing Systems10.1145/3491102.3517738(1-17)Online publication date: 29-Apr-2022
  • (2020)Morse KeyboardAETA 2019 - Recent Advances in Electrical Engineering and Related Sciences: Theory and Application10.1007/978-3-030-53021-1_59(586-592)Online publication date: 11-Aug-2020
  • (2019)Investigating Gesture Typing for Indirect TouchProceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies10.1145/33512753:3(1-22)Online publication date: 9-Sep-2019
  • (2019)Typing Slowly but Screen-FreeProceedings of the 21st International ACM SIGACCESS Conference on Computers and Accessibility10.1145/3308561.3353789(427-439)Online publication date: 24-Oct-2019
  • (2018)C-SAK: Chinese Scanning Ambiguous Keyboard for Parkinson's Disease Patients2018 IEEE 16th Intl Conf on Dependable, Autonomic and Secure Computing, 16th Intl Conf on Pervasive Intelligence and Computing, 4th Intl Conf on Big Data Intelligence and Computing and Cyber Science and Technology Congress(DASC/PiCom/DataCom/CyberSciTech)10.1109/DASC/PiCom/DataCom/CyberSciTec.2018.00137(792-799)Online publication date: Aug-2018
  • (2018)Reducing Scanning Keyboard Input Errors with Extended Start Dwell-TimeAdvances in Usability, User Experience and Assistive Technology10.1007/978-3-319-94947-5_79(808-817)Online publication date: 28-Jun-2018
  • (2017)An Efficient Text Entry Model for Scanning Ambiguous Keyboard2017 9th International Conference on Intelligent Human-Machine Systems and Cybernetics (IHMSC)10.1109/IHMSC.2017.23(71-76)Online publication date: Aug-2017
  • (2016)A Study of an Intention Communication Assisting System Using Eye MovementComputers Helping People with Special Needs10.1007/978-3-319-41267-2_69(495-502)Online publication date: 6-Jul-2016
  • (2015)Experiences of Someone with a Neuromuscular Disease in Operating a PC (and Ways to Successfully Overcome Challenges)ACM Transactions on Accessible Computing10.1145/27004366:2(1-18)Online publication date: 9-Mar-2015
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