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Table 1 Effect of the -gram language model on the oral cancer (OC) data: with growing context of the language model the recognition rate increases. Correlation to the perceptual evaluation, however, decreases if the context is too large (starting with here). Higher -grams showed even worse performance.

From: Automatic Speech Recognition Systems for the Evaluation of Voice and Speech Disorders in Head and Neck Cancer

0-gram

1-gram

2-gram

3-gram

Correlation

−0.88

−0.90

−0.90

−0.85

WR in %

44.4

50.0

67.3

74.8