Abstract: A method of performing bidirectional automatic speech recognition (ASR) using an external information source includes performing a precompute pass by pre-processing an utterance in a backward direction to generate pre-processing data stored in a data structure. In a run-time pass, ASR is performed on the utterance in a forward direction using the pre-processing data to generate a prediction list that has a given number of words in path probability order. A word prediction based on the prediction list is presented to an external information source to obtain a response confirming, selecting or correcting the word prediction. The word prediction based on the response and the prediction list are updated. Processing repeats until the end of the utterance is reached. The method outputs an automatic speech recognized form of the utterance based on the word prediction. Use of the external information source in an integrated manner improves current and future predictions.

Abstract: A method of speech recognition converts an unknown speech input into a stream of representative features. The feature stream is transformed based on speaker dependent adaptation of multi-class feature models. Then automatic speech recognition is used to compare the transformed feature stream to multi-class speaker independent acoustic models to generate an output representative of the unknown speech input.

Abstract: A method of speech recognition converts an unknown speech input into a stream of representative features. The feature stream is transformed based on speaker dependent adaptation of multi-class feature models. Then automatic speech recognition is used to compare the transformed feature stream to multi-class speaker independent acoustic models to generate an output representative of the unknown speech input.

Abstract: Speech recognition includes use of a user profile for large vocabulary continuous speech recognition which is created without using an enrollment procedure. The user profile includes speech recognition information associated with a specific user. Large vocabulary continuous speech recognition is performed on an unknown speech input from the user utilizing the information from the user profile.