Method for managing mixed initiative human-machine dialogues based on interactive speech
First Claim
1. Method for managing mixed-initiative human-machine dialogues based on speech interaction for providing a service to a human user in a particular context of domain in which the sentences uttered by the user are modelled in terms of simple or structured informative elements (parameters) while the exchanges of the machine or system are expressed by means of Communicative Acts (CA), characterised in that the dialogue is processed as status change sequence, comprising the whole of the characteristics linked both to the processed parameters and to the linguistic and pragmatic context, this whole describing a certain instant of the communicative situation between the user and the system so as to discriminate it from other situations which are also only slightly different employing the following three main components:
- a. a first component which, given the various parameters of the domain, defines the parameters on which to intervene to modify the status with the intent of converging towards a situation in which all parameters are acquired and confirmed;
in parallel, the component identifies the Communicative Act (CA) which applied to these parameters can make the status evolve in the required direction;
b. a second component for creating the sentences to be conveyed to user;
the Communicative Act is obtained by instancing said parameters;
c. a third component which analyses the user'"'"'s reply to determine the new system status given the parameters which were provided by the user, their mutual coherence, the previous status of these parameters or other correlated parameters.
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Abstract
Method for managing mixed-initiative human-machine dialogues based on speech interaction exploiting the separation between a general dialogue knowledge, such as communicative acts, which can be used in multiple application domains, and particular linguistic knowledge, which are domain-specific parameters, to process the dialogue as a sequence of changes of status. Each status consist in a set of features linked both to the processed parameters and to the linguistic and pragmatic context, and describes a certain instant of the communicative situation between the user and the system so to discriminate it from other situations that are also only slightly different. The method employs three components. A first component which, given the various parameters of the domain, defines the parameters on which to intervene to modify the status with the intent of converging towards a situation in which all parameters are acquired with a certain value; in parallel, the component identifies the Communicative Act (CA) which applied to these parameters can make the status evolve in the required direction. A second component creates the sentences to be conveyed to user, whereby obtaining a Communicative Act by instancing said parameters. A third component analyses the user'"'"'s reply to determine the new system status given the parameters that were provided by the user, their mutual coherence, the previous status of these parameters and other correlated parameters.
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Citations
24 Claims
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1. Method for managing mixed-initiative human-machine dialogues based on speech interaction for providing a service to a human user in a particular context of domain in which the sentences uttered by the user are modelled in terms of simple or structured informative elements (parameters) while the exchanges of the machine or system are expressed by means of Communicative Acts (CA), characterised in that the dialogue is processed as status change sequence, comprising the whole of the characteristics linked both to the processed parameters and to the linguistic and pragmatic context, this whole describing a certain instant of the communicative situation between the user and the system so as to discriminate it from other situations which are also only slightly different employing the following three main components:
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a. a first component which, given the various parameters of the domain, defines the parameters on which to intervene to modify the status with the intent of converging towards a situation in which all parameters are acquired and confirmed;
in parallel, the component identifies the Communicative Act (CA) which applied to these parameters can make the status evolve in the required direction;
b. a second component for creating the sentences to be conveyed to user;
the Communicative Act is obtained by instancing said parameters;
c. a third component which analyses the user'"'"'s reply to determine the new system status given the parameters which were provided by the user, their mutual coherence, the previous status of these parameters or other correlated parameters. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification