US 2018/0025722 A1 · SYSTEM AND METHOD FOR ENHANCING SPEECH RECOGNITION ACCURACY USING WEIGHTED GRAMMARS BASED ON USER PROFILE INCLUDING DEMOGRAPHIC, ACCOUNT, TIME AND DATE INFORMATION

Abstract

Disclosed herein are systems, computer-implemented methods, and computer-readable media for enhancing speech recognition accuracy. The method includes dividing a system dialog turn into segments based on timing of probable user responses, generating a weighted grammar for each segment, exclusively activating the weighted grammar generated for a current segment of the dialog turn during the current segment of the dialog turn, and recognizing user speech received during the current segment using the activated weighted grammar generated for the current segment. The method can further include assigning probability to the weighted grammar based on historical user responses and activating each weighted grammar is based on the assigned probability. Weighted grammars can be generated based on a user profile. A weighted grammar can be generated for two or more segments. Exclusively activating each weighted grammar can include a transition period blending the previously activated grammar and the grammar to be activated.

Claims20

Dependent claims

A method comprising:

identifying, via a processor and as part of a dialogue with a dialog system, a first segment of a dialog turn and a second segment of the dialog turn;
activating a first weighted grammar for the first segment to process first user speech received during the first segment, to yield a first activated weighted grammar, wherein the first weighted grammar is weighted based on a user profile which comprises one or more of information about a number called from, demographic information, account information, a time of day, and a date;
activating a second weighted grammar for the second segment of the dialog to process second user speech received during the second segment, to yield a second activated weighted grammar;
recognizing the first user speech received during the first segment of the dialog using the first activated weighted grammar;
and
recognizing the second user speech received during the second segment of the dialog using the second activated weighted grammar.

3 more elements

A system comprising:

a processor;
and
a computer-readable storage medium having instructions stored which, when executed on the processor, cause the processor to perform operations comprising:
identifying, as part of a dialogue with a dialog system, a first segment of a dialog turn and a second segment of the dialog turn;
activating a first weighted grammar for the first segment to process first user speech received during the first segment, to yield a first activated weighted grammar, wherein the first weighted grammar is weighted based on a user profile which comprises one or more of information about a number called from, demographic information, account information, a time of day, and a date;
activating a second weighted grammar for the second segment of the dialog to process second user speech received during the second segment, to yield a second activated weighted grammar;
recognizing the first user speech received during the first segment of the dialog using the first activated weighted grammar;
and
recognizing the second user speech received during the second segment of the dialog using the second activated weighted grammar.

6 more elements

A computer-readable storage device having instructions stored which, when executed on a computing device, cause the computing device to perform operations comprising:

identifying, as part of a dialogue with a dialog system, a first segment of a dialog turn and a second segment of the dialog turn;
activating a first weighted grammar for the first segment to process first user speech received during the first segment, to yield a first activated weighted grammar, wherein the first weighted grammar is weighted based on a user profile which comprises one or more of information about a number called from, demographic information, account information, a time of day, and a date;
activating a second weighted grammar for the second segment of the dialog to process second user speech received during the second segment, to yield a second activated weighted grammar;
recognizing the first user speech received during the first segment of the dialog using the first activated weighted grammar;
and
recognizing the second user speech received during the second segment of the dialog using the second activated weighted grammar.

3 more elements

Dependencies are inferred from the claim text.

System and method for enhancing speech recognition accuracy using weighted grammars based on user profile including demographic, account, time and date information

Life of this patent

System and method for enhancing speech recognition accuracy using weighted grammars based on user profile including demographic, account, time and date information

Life of this patent

Abstract

Claims20