Abstract: A dialogue system includes a storage device and an execution device. Scenario data stored in the storage device define a response sentence corresponding to a state and a transition condition for transition to a different state. The execution device executes a text data generation process, a determination process, a scenario response process, a chat process, a storage process, and a return process. The text data generation process is a process of converting a voice of a user into text data. The determination process is a process of determining whether the transition condition is satisfied. The scenario response process is a process of operating a speaker so as to make a response when the transition condition is satisfied. The chat process is a process of operating the speaker so as to make a different response when the transition condition is not satisfied.

Abstract: A dialogue system that dialogues with a user includes an execution device configured to execute a detection process and a recognition process. The recognition process is a process of recognizing that the user talks to the dialogue system when a predetermined state is detected by the detection process. The detection process is a process of detecting the predetermined state using, as an input, an output signal of a camera that images the user. The predetermined state includes a state in which a mouth of the user moves.

Abstract: A mobile terminal measures sensor values in a predetermined period. And the mobile terminal detects whether a missing sensor value exists in the predetermined period. And when the mobile terminal is detected the missing sensor value, the mobile terminal interpolates the missing sensor value with a Gaussian process.

Abstract: A speech recognition apparatus recognizes a speech signal received from a speaker and provides the result of recognition for an external device. In the apparatus, a pattern matching section performs pattern matching between each of reference patterns in a vocabulary and characteristic parameters extracted from the speech signal. The vocabulary includes reference patterns corresponding to words. Further the apparatus has a similar sound group which includes reference patterns corresponding to the sound similar to that of a specific word. The specific word is a word in response to which the external device performs an operation which cannot be easily undone. The speech signal is rerecognized by using the similar sound group. As a result, the pattern matching section outputs a word other than the specific word, if one of the reference patterns in the similar sound group has a high similarity with the characteristic parameters.

Abstract: A speech recognition apparatus recognizes a speech signal received from a speaker and provides the result of recognition for an external device. In the apparatus, a pattern matching section performs pattern matching between each of reference patterns in a vocabulary and characteristic parameters extracted from the speech signal. The vocabulary includes reference patterns corresponding to words. Further the apparatus has a similar sound group which includes reference patterns corresponding to the sound similar to that of a specific word. The specific word is a word in response to which the external device performs an operation which cannot be easily undone. The speech signal is rerecognized by using the similar sound group. As a result, the pattern matching section outputs a word other than the specific word, if one of the reference patterns in the similar sound group has a high similarity with the characteristic parameters.