Toshihiko Itoh

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We consider that factors such as prosody of systems' utterances and dialogue rhythm are important to attain a natural human-machine dialogue. However, the relations between dialogue rhythm and speaker's various states in task-oriented dialogue have been not revealed. In this study, we collected task-oriented dialogues and analyzed the relations between "(More)
To verify the validity of analysis results relating to dialogue rhythm from earlier studies, we produced spoken dialogues based on analysis results relating to response timing and the other spoken dialogues, and performed subjective experiments to investigate parameters such as the naturalness of the dialogue, the incongruity of the synthesized speech, and(More)
This paper presents the characteristic differences of linguistic and acoustic features observed in different spoken dialogue situations and with different dialogue partners: human-human vs. human-machine interactions. And it also presents influences of awareness of users on those characteristics. We compare the linguistic and acoustic features of the user's(More)
This paper presents the characteristic differences of acoustic and linguistic features observed in different spoken dialogue situations: human-human vs. human-machine interactions. We compare the acoustic and linguistic features of the user's speech to a spoken dialogue system and to a human-operator in several landmark setting tasks for a car navigation(More)
SUMMARY In the real environment, it is hard for a speech recog-nizer to avoid misrecognitions completely. However, if misrecognitions occur, user's intentions are usually misunderstood by a conventional language understanding technique , which simply gives priority to the higher rank hypothesis of a speech recognition result (N-best). The utterances in a(More)