The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 05, 2009
Filed:
Oct. 30, 2000
Mukund Padmanabhan, White Plains, NY (US);
George A. Saon, Putnum Valley, NY (US);
Mukund Padmanabhan, White Plains, NY (US);
George A. Saon, Putnum Valley, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
In connection with speech recognition, the design of a linear transformation θε, of rank p×n, which projects the features of a classifier xεonto y=θxεsuch as to achieve minimum Bayes error (or probability of misclassification). Two avenues are explored: the first is to maximize the θ-average divergence between the class densities and the second is to minimize the union Bhattacharyya bound in the range of θ. While both approaches yield similar performance in practice, they outperform standard linear discriminant analysis features and show a 10% relative improvement in the word error rate over known cepstral features on a large vocabulary telephony speech recognition task.