Spoken language interfaces (3)
A similar statistical approach was also used for language modeling, using bigrams or trigrams whose probabilities are estimated from a large text corpus corresponding to the application task at hand.
Probabilistic linguistics-based models able to capture longer-range effects have improved speech recognition accuracy.
The state-of-the-art performance of speech recognition systems indicate that a very good performance can be achieved for constrained tasks (e.g., digit strings), but the error rate increases rapidly for unconstrained conversational speech.