Apparatus and method for recognizing voice command
First Claim
1. An apparatus for recognizing a voice command, the apparatus, comprising:
- a probability distribution of a command intention generator, implemented by a processor, configured to recognize a first voice command, and in response, configured to generate probability distributions of the command intention in consideration of predefined possible cases;
a probability distribution of the command intention updater, implemented by a processor, configured to update each of the probability distributions of the command intention based on a system response based on one or the generated probability distributions of the command intention to the first voice command and a second voice command issued in response to the system response;
a probability distribution of the command intention selector, implemented by a processor, configured to select one of the updated probability distributions of the command intention for the first voice command; and
an operation signal generator, implemented by a processor, configured to select a final command intention from the selected updated probability distributions of the command intention and output an operation signal based on the selected final command intention;
wherein the probability distribution of the command intention generator, implemented by the processor therefor, is further configured to generate different probability distributions of the command intention for the first voice command for different possible cases, the probability distribution of the command intention updater, implemented by the processor therefor, is further configured to hierarchically update each of the different probability distributions of the command intention, and the different possible cases include when the intention of the user is uniformly maintained, when the intention of the user is slightly modified, and when the intention of the user is completely changed.
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Abstract
An apparatus and method for recognizing a voice command for use in an interactive voice user interface are provided. The apparatus includes a command intention belief generation unit that is configured to recognize a first voice command and that may generate one or more command intention beliefs for the first voice command. The apparatus also includes a command intention belief update unit that is configured to update each of the command intention beliefs based on a system response to the first voice command and a second voice commands. The apparatus also includes a command intention belief selection unit that is configured to select one of the updated command intention beliefs for the first voice command. The apparatus also includes an operation signal output unit that is configured to select a final command intention from the selected updated command intention belief and to output an operation signal based on the selected final command intention.
23 Citations
18 Claims
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1. An apparatus for recognizing a voice command, the apparatus, comprising:
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a probability distribution of a command intention generator, implemented by a processor, configured to recognize a first voice command, and in response, configured to generate probability distributions of the command intention in consideration of predefined possible cases; a probability distribution of the command intention updater, implemented by a processor, configured to update each of the probability distributions of the command intention based on a system response based on one or the generated probability distributions of the command intention to the first voice command and a second voice command issued in response to the system response; a probability distribution of the command intention selector, implemented by a processor, configured to select one of the updated probability distributions of the command intention for the first voice command; and an operation signal generator, implemented by a processor, configured to select a final command intention from the selected updated probability distributions of the command intention and output an operation signal based on the selected final command intention; wherein the probability distribution of the command intention generator, implemented by the processor therefor, is further configured to generate different probability distributions of the command intention for the first voice command for different possible cases, the probability distribution of the command intention updater, implemented by the processor therefor, is further configured to hierarchically update each of the different probability distributions of the command intention, and the different possible cases include when the intention of the user is uniformly maintained, when the intention of the user is slightly modified, and when the intention of the user is completely changed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of recognizing a voice command, the method comprising:
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recognizing a first voice command and generating probability distributions of the command intention for the first voice command in consideration of predefined possible cases; updating each of the probability distributions of the command intention based on a system response based on one of the generated probability distributions of the command intention to the first voice command and a second voice command issued in response to the system response; selecting an updated probability distribution of the command intention for the first voice command; and selecting a final command intention from the selected updated probability distributions of the command intention outputting an operation signal based on the selected final command intention, wherein the method of recognizing the voice command is implemented by at least a processor; wherein the generating of the probability distributions of the command intention for the first voice command comprises generating different probability distributions of the command intention for the first voice command for different possible cases, the updating of the probability distributions of the command intention for the first voice command comprises hierarchically updating each of the different probability distributions of the command intention, and the different possible cases include when the intention of the user is uniformly maintained, slightly modified, and completely changed. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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Specification