| Problem
Statement |
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| • | Write English
messages using only 12 keys |
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| – | 1-to-1 mapping
of letters to keys not possible |
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| • | Need more than
one keystroke to type a letter |
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| • | We review
current approaches and propose |
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| improvements
using corpus-based methods |
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| – | Key remapping |
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| – | Word prediction |
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| • | Key point: how
to measure performance? |
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| – | Keystroke Level
Model |
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| – | (Better)
Operation Level Model |
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| – | On actual SMS
text |
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