Comparative analysis of fixed-vocabulary communication acceleration techniques

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Abstract
Principles involved in the formation of acceleration vocabularies are reviewed followed by an analysis of alternate strategies for implementing abbreviation expansion accelleration techniques. Data regarding the coverage power of most-frequently-used-word sets, the effects of word length and keystroke analyses on calculated word set efficiencies, and the effect of different termination and abbreviation strategies are presented. Word set analyses which do not take keystroke analysis into account are shown to be overly optimistic due to the heavily skewed distribution of word length versus usage. A generic abbreviation algorithm is described which allows implementation and comparison of other strategies. Fixed-vocabulary, letter-based word prediction techniques are shown to be a form of cued abbreviation expansion with a relatively low motor efficiency.

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