SPEECH RECOGNITION SYSTEM, SPEECH RECOGNITION METHOD, AND SPEECH RECOGNITION PROGRAM

摘要

This speech recognition device is provided with: a hypothesis search means, which, with respect to inputted speech data, searches for the optimum solution by generating hypotheses involving chains of words to be searched as candidates for recognition results; a restatement determination means, which calculates the likelihood of a word or a word sequence included in a hypothesis being searched by the hypothesis search means being a restatement, and which determines whether the word or word sequence is a restatement; and a filtered word hypothesis generation means, which, when it has been determined that the word or word sequence is a restatement, generates a filtered word hypothesis, which is a hypothesis that treats the word or word sequence included in non-flowing segments or repaired segments among restatement segments that include the word or word sequence as filtered words.