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Notes on computational linguistics.pdf - UCLA Department of ...

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Stabler - Lx 185/209 2003<br />

Word length in naturally occurring text has a similar relati<strong>on</strong> to frequency – with dicti<strong>on</strong>aries as unsurprisingly<br />

excepti<strong>on</strong>al:<br />

Proporti<strong>on</strong> <strong>of</strong> the number <strong>of</strong> tokens<br />

0.3<br />

0.25<br />

0.2<br />

0.15<br />

0.1<br />

0.05<br />

0<br />

Bible<br />

Shakespeare<br />

WSJ<br />

Chambers<br />

Brown<br />

LOB<br />

WSJ<br />

Jeffers<strong>on</strong><br />

Austen<br />

Shakespeare<br />

Bible<br />

Chambers<br />

2 4 6 8 10 12 14 16 18<br />

Word length<br />

Most words types are rare; bigrams, trigrams more so<br />

Cumulative percentage <strong>of</strong> the number <strong>of</strong><br />

types, bigrams or trigrams<br />

100<br />

90<br />

80<br />

70<br />

60<br />

50<br />

40<br />

1<br />

2<br />

trigrams<br />

3<br />

bigrams<br />

4<br />

5<br />

types<br />

10<br />

20<br />

30<br />

Frequency<br />

40 50<br />

130<br />

100<br />

200

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