We examined how the valency patterns can contribute to the improvement of speech recognition accuracy. The valency patterns are a collection of semantic information, describing the functional relationship of noun groups to the main verb of a sentence. As the result of our experiments, the recognition rate improved for 23 of 70 sentence, and the rate for the first candidate increased from 50% to 67%. This means that it is effective to use the valency patterns for speech recognition.
In the future, we may need to research the effectiveness of the valency patterns that incorporate more complicated sentences, such as compound or complex sentences.