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:
Jun. 17, 2008
Filed:
Oct. 16, 2003
Jayadev Billa, Evanston, IL (US);
Daniel Kiecza, Cambridge, MA (US);
Francis G. Kubala, Boston, MA (US);
Jayadev Billa, Evanston, IL (US);
Daniel Kiecza, Cambridge, MA (US);
Francis G. Kubala, Boston, MA (US);
BBN Technologies Corp., Cambridge, MA (US);
Abstract
A unified clustering tree () generates phoneme clusters based on an input sequence of phonemes. The number of possible clusters is significantly less than the number of possible combinations of input phonemes. Nodes () in the unified clustering tree are arranged into levels such that the clustering tree generates clusters for multiple speech recognition models. Models that correspond to higher levels in the unified clustering tree are coarse models relative to more fine-grain models at lower levels of the clustering tree.