Patent ID: 11942091
Assignee: GOOGLE LLC
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 13:
14. A method implemented by one or more processors, the method comprising:
generating a contextual finite state transducer for use in modifying one or more probabilities of candidate recognitions of an alphanumeric sequence of a spoken utterance during automatic speech recognition, wherein generating the contextual finite state transducer comprises:
selecting an alphanumeric grammar finite state transducer corresponding to the alphanumeric sequence;
selecting a speller finite state transducer which maps wordpieces to constitute graphemes;
generating an unweighted wordpiece based acceptor grammar based on the alphanumeric grammar finite state transducer and the speller finite state transducer;
generating a factored finite state transducer based on processing the unweighted wordpiece based acceptor grammar using a factor operation; and
generating the contextual finite state transducer based on applying a constant weight to each arc in the unweighted wordpiece based acceptor grammar.