6. An apparatus for adapting a model for a speech recognition system, comprising: a speech-input device; and a processor that is operable to: (i) determine an expected response, (ii) acquire a speech input from the speech-input device, (iii) generate a hypothesis from the speech input, the hypothesis comprising words, each word having an associated confidence factor, (iv) identify an instance of a word, recognized by the system within a certain confidence factor range and included in the hypothesis generated by the system that matches the expected response, as a possible error; (v) add the identified possible error to a count of possible errors, and (vi) use the count of possible errors to adjust the adaption of a model for the word associated with the possible error.
6. An apparatus for adapting a model for a speech recognition system, comprising: a speech-input device; and a processor that is operable to: (i) determine an expected response, (ii) acquire a speech input from the speech-input device, (iii) generate a hypothesis from the speech input, the hypothesis comprising words, each word having an associated confidence factor, (iv) identify an instance of a word, recognized by the system within a certain confidence factor range and included in the hypothesis generated by the system that matches the expected response, as a possible error; (v) add the identified possible error to a count of possible errors, and (vi) use the count of possible errors to adjust the adaption of a model for the word associated with the possible error. 7. The apparatus of claim 6 , wherein the range comprises values corresponding to low confidence that the system recognized the instances of the word correctly for an application in which the system is used.