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:
Nov. 10, 2009
Filed:
Aug. 25, 2006
Xiaodong He, Issaquah, WA (US);
Alex Acero, Bellevue, WA (US);
Dong Yu, Kirkland, WA (US);
LI Deng, Sammamish, WA (US);
Xiaodong He, Issaquah, WA (US);
Alex Acero, Bellevue, WA (US);
Dong Yu, Kirkland, WA (US);
Li Deng, Sammamish, WA (US);
Microsoft Corporation, Redmond, WA (US);
Abstract
A method and apparatus for training an acoustic model are disclosed. A training corpus is accessed and converted into an initial acoustic model. Scores are calculated for a correct class and competitive classes, respectively, for each token given the acoustic model. From this score a misclassification measure is calculated and then a loss function is calculated from the misclassification measure. The loss function also includes a margin value that varies over each iteration in the training. Based on the calculated loss function the acoustic model is updated, where the loss function with the margin value is minimized. This process repeats until such time as an empirical convergence is met.