DISCRIMINATIVE SPEECH RECOGNITION ACCURACY ESTIMATING DEVICE, DISCRIMINATIVE SPEECH RECOGNITION ACCURACY ESTIMATING METHOD AND PROGRAM

摘要

PROBLEM TO BE SOLVED: To provide a discriminative speech recognition accuracy estimating device capable of obtaining an estimated value of recognition accuracy with high accuracy.;SOLUTION: The discriminative speech recognition accuracy estimating device comprises: a speech recognition part for recognizing an inputted speech to output the speech recognition resu a word feature quantity vector forming part for forming a word feature quantity vector on the basis of information obtained from the speech recognition resu a recognition result word random classification part for forming a random word classification result which indicates correct answer probability of each word except ε in a 1-best recognition result word string, substitution error probability and insertion error probability for each segment, by using a word feature quantity vector of each word except ε in the 1-best recognition result word string formed by coupling words having maximum existence probability in a segment, and a recognition result word random classification model previously learned; and a random recognition accuracy calculating part for calculating speech recognition accuracy using the random word classification result.;COPYRIGHT: (C)2013,JPO&INPIT