Method and apparatus for estimating fitness to perform tasks based on linguistic and other aspects of spoken responses in constrained interactions
First Claim
1. A computer-assisted method, comprising determining a user'"'"'s fitness for a particular task based at least in part on one or more measures estimated from one or more spoken responses received from the user in response to one or more prompts chosen on the basis that the prompts can be expected to elicit responses characterized by low linguistic entropy.
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Abstract
Linguistic and/or extra-linguistic information is extracted from speech signals to provide measures that may then be compared to expected norms, individual baselines or other nominal or numeric criteria (according to particular psychomotor, perceptual, cognitive or emotional constructs) that are required for satisfactory performance of particular tasks, or that indicate a user'"'"'s psychological or physical state. The user produces the speech signals in the context of a constrained voice-interactive dialog that utilizes prompts chosen such that the expected range of responses will exhibit low linguistic entropy. For example, the prompts may be interpreted by the user as requests for information, requests to read or repeat or paraphrase a word, sentence, or larger linguistic unit, requests to draw an inference, requests to complete, or identify elements in graphic or verbal aggregates (e.g., pictures or discourses), as examples to imitate, or any similar graphical or verbal presentation that conventionally serves as a prompt to speak. The display is presented though a device either integral or peripheral to a computer system, such as a local or remote video display terminal or telephone.
129 Citations
42 Claims
- 1. A computer-assisted method, comprising determining a user'"'"'s fitness for a particular task based at least in part on one or more measures estimated from one or more spoken responses received from the user in response to one or more prompts chosen on the basis that the prompts can be expected to elicit responses characterized by low linguistic entropy.
- 9. A computer-assisted method, comprising estimating states of a user from measures derived from one or more spoken responses received from the user in response to one or more prompts chosen on the basis that the prompts can be expected to elicit responses characterized by low linguistic entropy.
- 19. The computer-assisted method of claim 19 wherein the states are estimated from the extra-linguistic measures, prosodic measures and indexical values and the identity of one or more linguistic units which comprise the one or more spoken responses.
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25. An interactive computer-based system wherein spoken responses are elicited from a user in response to prompts presented by the system, the system comprising:
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a) means for presenting prompts chosen on the basis that the prompts can be expected to elicit responses characterized by low linguistic entropy; b) means for extracting linguistic and/or extra-linguistic values in the user'"'"'s spoken response; and c) means for automatically determining a state of the user according to extracted linguistic, extra-linguistic and/or indexical values in the user'"'"'s spoken response. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42)
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Specification