8th International Conference on Spoken Language Processing

Jeju Island, Korea
October 4-8, 2004

Speech Recognition Error Correction Using Maximum Entropy Language Model

Sangkeun Jung, Minwoo Jeong, Gary Geunbae Lee

Pohang University of Science & Technology (POSTECH), Korea

A speech interface is often required in many application environments, such as telephone-based information retrieval, car navigation systems, and user-friendly interfaces, but the low speech recognition rate makes it difficult to extend its application to new fields. We propose a domain adaptation technique via error correction with a maximum entropy language model, which is a general and elegant framework to combine higher level linguistic knowledge. Our approach has the ability to correct both semantic and lexical errors in 1-best output from the black-box style speech recognizer, and can improve the performance of speech recognition and application system. Through extensive experiments using a speech-driven in-vehicle telematics information retrieval and spoken language understanding, we demonstrate the superior performance of our approach and some advantages over previous lexical-oriented error correction approaches.

Full Paper

Bibliographic reference.  Jung, Sangkeun / Jeong, Minwoo / Lee, Gary Geunbae (2004): "Speech recognition error correction using maximum entropy language model", In INTERSPEECH-2004, 2137-2140.