liu.seSearch for publications in DiVA
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Förenklad textinmatning på mobila enheter med hjälp av kontextbaserad språktolkning
Linköping University, Department of Electrical Engineering.
2005 (Swedish)Independent thesis Basic level (professional degree)Student thesisAlternative title
Simplified text input for mobile devices using context based language interpretation (English)
Abstract [en]

The number of text messages sent from mobile phones, has increased dramatically over the last few years. Along with that, we are witnessing a lot of new mobile portal services currently being developed. Many of these services rely on an ability to input text efficiently. The traditional phone keypad is ambiguous because each key encodes more than one letter. At present, the most common way to deal with this problem is using a stored dictionary to guess the intended input.

This thesis presents a new text entry strategy called Qtap. Instead of using a stored dictionary to guess the intended word, this method uses probabilities of letter sequences. New features that come with Qtap are the usage of the viterbi algorithm to decode input sequences and a non-alphabetic keypad. How the strategy and the keypad used by Qtap were developed, is described throughout the thesis.

Qtap is also compared to a dictionary-based method, t9, on a non-user level. The results show Qtap is performing well in many senses. The conclusion from this is that a further development of Qtap is motivated.

A discussion of various modifications and additions to the design, that may yield a performance improvement, is also included.

Place, publisher, year, edition, pages
Institutionen för systemteknik , 2005.
Keyword [en]
Informationsteknik, textinmatning, sms, mobiltelefon, kontextmodellering, textmeddelande, begränsad knappsats, språkmodellering, viterbiavkodning
Keyword [sv]
Informationsteknik
National Category
Computer and Information Science
Identifiers
URN: urn:nbn:se:liu:diva-2718ISRN: LITH-ISY-EX--05/3607--SEOAI: oai:DiVA.org:liu-2718DiVA: diva2:20059
Uppsok
teknik
Available from: 2005-04-29 Created: 2005-04-29

Open Access in DiVA

fulltext(700 kB)635 downloads
File information
File name FULLTEXT01.pdfFile size 700 kBChecksum SHA-1
41534f1ef4d3dde74175b6019d98cbbabc295088fb07f20c97c12f61844f920ea9209e4b
Type fulltextMimetype application/pdf

By organisation
Department of Electrical Engineering
Computer and Information Science

Search outside of DiVA

GoogleGoogle Scholar
Total: 635 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

urn-nbn

Altmetric score

urn-nbn
Total: 375 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf