13. The method of claim 10 , wherein the performing of the utterance verification includes: separately calculating word-specific confidence scores of words of sections in which the events have occurred and words for which no event has occurred; calculating confidence scores in units of sentences or utterances based on the calculated word-specific confidence scores; calculating sentence-specific confidence scores to which the events are applied without separating words from each other using section information of the sections in which the events have occurred and estimated values of a plurality of feature parameters; analyzing sentence structures and meanings of speech recognition result sentences and calculating confidence scores of sentences; and comparing the calculated confidence scores with a preset threshold value and determining whether or not to accept the speech recognition result sentences according to comparison results.
13. The method of claim 10 , wherein the performing of the utterance verification includes: separately calculating word-specific confidence scores of words of sections in which the events have occurred and words for which no event has occurred; calculating confidence scores in units of sentences or utterances based on the calculated word-specific confidence scores; calculating sentence-specific confidence scores to which the events are applied without separating words from each other using section information of the sections in which the events have occurred and estimated values of a plurality of feature parameters; analyzing sentence structures and meanings of speech recognition result sentences and calculating confidence scores of sentences; and comparing the calculated confidence scores with a preset threshold value and determining whether or not to accept the speech recognition result sentences according to comparison results. 14. The method of claim 13 , wherein the calculating of the word-Specific confidence scores includes calculating the word-specific confidence scores using the specific anti-model and the filler model preset in a database.