5. The method of claim 4 comprising the further steps of: (f) for each count used in deriving a probability item in the known word model, determining a plus count value from the generated outputs of the uttered known word; (g) the plus count value of a subject count serving as an addend in defining the adjusted count value for the subject count; the adjusted value of a subject count being determined by adding the stored value and plus count value and subtracting the minus count value.
16. The method of claim 5 wherein the determining of the minus count values includes the steps of: (v) for a subject count used in deriving a probability value for a probability item in the incorrect word, determining a first value indicating the expected occurrence of the event corresponding to the subject count in the model of the incorrect word based on the outputs generated in response to utterance of the known word; (w) scaling the first value by a predefined amount; (x) the scaled value representing the minus count value for the subject count; and (y) repeating steps (v) through (x), until each count used in deriving a probability value for a probability item in the incorrect word model has been the subject count in at least one repetition.