Mobile text entry using three keys
Proceedings of the second Nordic conference on Human-computer interaction
Measuring errors in text entry tasks: an application of the Levenshtein string distance statistic
CHI '01 Extended Abstracts on Human Factors in Computing Systems
Mobile text entry using three keys
Proceedings of the second Nordic conference on Human-computer interaction
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Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
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CHI '04 Extended Abstracts on Human Factors in Computing Systems
Analyzing the input stream for character- level errors in unconstrained text entry evaluations
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ACM Transactions on Computer-Human Interaction (TOCHI)
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Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
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Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
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ACM Transactions on Computer-Human Interaction (TOCHI)
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We describe a technique to analyse character-level errors in evaluations of text entry methods. Using an algorithm for sequence comparisons, we generate the set of optimal alignments between the presented and transcribed text. Percharacter errors, categorized as insertions, substitutions, or deletions, are obtained by analysing the alignments and applying a weighting factor. A detailed example using a real data set is given.