8 How many people in India prefer to speak in English?
Slide 9
9 Source: Top 10 Publications 2012 Q1, Hansa Research, MRUS,
IRS
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10
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11 Source: An Installation in IDC
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Structure of the Devanagari Script Gutturals Palatals Linguals
Dentals Labials Vowel modifiers Semi-vowels Vowels Consonants
Vowels 12
Slide 13
Challenges in Text Input in Indian Languages 13 Gutturals
Palatals Linguals Dentals Labials Vowel modifiers Semi-vowels
Vowels Consonants Vowels Large number of characters ~660 frequent
glyphs 2+ keystrokes = glyph + = (C + V) + + = (C + V + V)
Difference in pronunciation and visual sequence + = Conjuncts
(halant between two consonants) + + = (C + C) Varying similarity
between conjuncts and consonants + + = + + = + + = + + =
Slide 14
Text Input in Indic Languages QWERTY keyboard for Devanagari
input Devanagari needs 52 keys (13 vowels, 34 consonants, 4
conjuncts, 1 halant) QWERTY has 26 un-shifted keys Leads to
cognitive load on users Complex structure of Indic scripts (G >
K) Large number of glyphs Need much training and practice 30-50
hours to reach 25 wpm Slow starts Only professional typists put in
the effort QWERTY is not suitable 14
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15
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16
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17 Source: Anshuman Kumar
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Task Success /5 Users 18 Without help p (one tailed) Nokia
(0.208) Samsung (0.195) Sony (0.001) Total p (one tailed) Nokia
(0.000) Samsung (0.010) Sony (0.000)
