36. A speech recognition apparatus comprising: a processor configured to: perform a first recognition, for recognizing a sentence from speech expressed by a user, using an acoustic model and a language model; perform a second recognition using a linguistic model, the second recognition including rescoring of temporary results of the language model after having been selectively revised according to an evaluation of the temporary results of the language model using the linguistic model to identify a word most likely to be incorrect in the sentence, and according to a subsequent dynamic weighting of suitability between scoring of sampled candidate words by the acoustic model and scoring of the sampled candidate words by the linguistic model; and selectively, dependent on an evaluation of the rescored temporary results, generate a final recognition sentence based on the rescored temporary results.
36. A speech recognition apparatus comprising: a processor configured to: perform a first recognition, for recognizing a sentence from speech expressed by a user, using an acoustic model and a language model; perform a second recognition using a linguistic model, the second recognition including rescoring of temporary results of the language model after having been selectively revised according to an evaluation of the temporary results of the language model using the linguistic model to identify a word most likely to be incorrect in the sentence, and according to a subsequent dynamic weighting of suitability between scoring of sampled candidate words by the acoustic model and scoring of the sampled candidate words by the linguistic model; and selectively, dependent on an evaluation of the rescored temporary results, generate a final recognition sentence based on the rescored temporary results. 40. The apparatus of claim 36 , wherein, to perform the second recognition, the processor is further configured to perform a preprocessing of the candidate words to eliminate from consideration, as a sampled candidate word, a candidate word whose phonetic sequence has a determined longer distance than another candidate word with respect to a phonetic sequence of the identified word.