Patent ID: 8050909
Filing Date: 2011-11-01
Classification: G06F,G10L

Abstract:
1. A method of post-processing a dialogue error in a speech dialogue system using multilevel verification, comprising: recognizing user speech to detect a speech recognition error in a sentence uttered by the user, which is obtained by the speech recognition results; linguistically analyzing the sentence uttered by the user to detect an error in the linguistic analysis results; analyzing, by a computer, a meaning of a discourse in the sentence uttered by the user based on a context to detect an error in the discourse analysis results; analyzing a meaning of a dialogue in the sentence uttered by the user based on a whole dialogue flow to detect an error in the dialogue analysis results; and analyzing types of the detected errors to perform error post-processing for error correction according to the corresponding error type, wherein when the error type of the detected error corresponds to a linguistic analysis error, further comprising correcting the linguistic analysis error according to a noise channel calculated based on a linguistic model to transfer the analyzing a meaning of a discourse in the sentence uttered by the user based on a context to detect an error in the discourse analysis results.