Nippon Telegraph and Telephone Corporation

Osaka University

Hiroaki Sugiyama

Hiroshi Ishiguro

Yuichiro Yoshikawa

Junji Yamato

Hiromi Narimatsu

Toyomi Meguro

Tsunehiro Arimoto

Takamasa Iio

Masahiro Mizukami

A dialog apparatus and the like are provided which achieve a natural dialog in which topics minutely connect, starting from a user utterance, by making, after a robot's response to the user utterance, robots exchange additional questions and answers, which reflect the contents of the response, between them. A plurality of sets of four utterances, each set being made up of four sentences: an assumed user utterance sentence, a response sentence for user utterance, a subsequent utterance sentence for these sentences, and a subsequent response sentence as a unit, are stored, and, in response to input of text data corresponding to a user utterance, the dialog apparatus performs control such that any one of a plurality of agents utters, of a set of four utterances that begins with an assumed user utterance sentence which is similar to the text data corresponding to the user utterance, each of a response sentence for user utterance, a subsequent utterance sentence for these sentences, and a subsequent response sentence, different agents utter the response sentence for user utterance and the subsequent utterance sentence, and different agents utter the subsequent utterance sentence and the subsequent response sentence.

Dialog apparatus, method and program for the same

Provided is a technique for generating a tagging model for attaching a tag in consideration of a phrase based on dependency between words. A tagging model generation apparatus includes a learning sectionwhich generates, by using inputted learning data, a tagging model including probability-related information serving as information related to the probability that each tag is associated with each word-related information, and joint probability-related information serving as information related to a joint probability which serves as the probability of appearance of each tag in which appearance frequencies of a plurality of consecutive tags associated with pieces of word-related information of a plurality of consecutive words in each text are taken into consideration, and a storage sectionwhich stores the generated tagging model.

Tag assignment model generation apparatus, tag assignment apparatus, methods and programs therefor using probability of a plurality of consecutive tags in predetermined order

It is an object of the present invention to promote a user's understanding or agreement, and to cause a dialogue to last long. A dialogue systemconducts a dialogue with a user. A humanoid robot-presents a first utterance which is a certain utterance. When the userperforms an action indicating that the user cannot understand the first utterance or it is predicted that the user performs an action indicating that the user cannot understand the first utterance or when the user does not perform any action indicating that the user can understand the first utterance, or it is predicted that the user will not perform any action indicating that the user can understand the first utterance, then the humanoid robot-presents a second utterance which is at least one utterance resulting from paraphrasing the contents of the first utterance.

Dialogue method, dialogue system, dialogue apparatus and program

It is an object of the present invention to prevent inattentive listening to a dialogue of an agent without taking it seriously and to make it easier to understand the dialogue with the agent. A dialogue systemconducts a dialogue with a user. A humanoid robot-presents a leap-in-logic utterance, which is an utterance, of which a logical structure is partially missing. The userexpresses a confirmation action which is an action confirming the missing information in the leap-in-logic utterance. The humanoid robot-presents a supplementary utterance which is an utterance describing the missing information.

The present invention keeps a dialogue continuing for a long time without causing uncomfortable feeling to a user. A dialogue systemincludes at least an input partthat receives a user utterance, which is an utterance from a user and a presentation partthat presents the utterance. The input partreceives a user utterance performed by the user. A presentation part-presents a dialogue-establishing utterance which does not include any content words. A presentation part-presents a second utterance associated with a generation target utterance, which is one or more utterances performed before user utterance that includes at least the user utterance, after the dialogue-establishing utterance.

Dialogue establishing utterances without content words

The present invention improves a sense of participation in a topic and enables a dialogue to continue for a long time. A dialogue systemincludes at least an input partthat receives a user's utterance and a presentation partthat presents an utterance. In an utterance receiving step, the input partreceives an utterance performed by the user. In a first presentation step, the presentation partpresents an utterance determined based on scenarios stored in advance. In a second presentation step, the presentation partpresents the utterance determined based on the user's utterance contents. A dialogue control partperforms control to execute a dialogue at least including a first dialogue flow which is a dialogue including the utterance receiving step and the first presentation step at least one time respectively based on a predetermined scenario, and a second dialogue flow which is a dialogue including the utterance receiving step and the second presentation step at least one time respectively.

It is an object of the present invention to induce a dialogue to a topic that a dialogue system tries to present. A dialogue systempresents a first utterance which is a certain utterance and a target utterance related to the first utterance to a user. A humanoid robot-presents the first utterance. A microphone-receives a user utterance of the userafter the first utterance. A humanoid robot-presents at least one topic-inducing utterance for inducing the topic to the target utterance based on a recognition result of the user utterance and an utterance sentence of the target utterance after the user utterance. The humanoid robot-presents the target utterance after the topic-inducing utterance.

The present invention provides a dialog system comprising a speech receiving step in which the dialog system receives input of a speech of a human, a first speech determination step in which the dialog system determines a first speech which is a speech in response to the speech of the human, a first speech presentation step in which the first speech is presented by a first agent, a reaction acquisition step in which the dialog system acquires a reaction of the human to the first speech, a second speech determination step in which the dialog system determines, when the reaction of the human is a reaction indicating that the first speech is not a speech in response to the speech of the human, a second speech which is different from the first speech, and a second speech presentation step in which the second speech is presented by the second agent.

Dialog method, dialog system, dialog apparatus and program that gives impression that dialog system understands content of dialog

It is an object of the present invention to provide a dialog technique that can reduce a user's uncomfortable feeling. A dialog systemis a dialog system that conducts a dialog with the user, the dialog system including a presentation partthat presents an action to fill a gap between a user utterance and a response utterance of the dialog system, after it is estimated or determined that the user utterance has ended or after a predicted time at which the user utterance ends, and before the dialog system makes a response utterance to the user utterance.

Dialog system, dialog method, dialog apparatus and program

An acquisition method is a method performed by an acquisition system in order to acquire a speech set in which three speeches are associated with one another used to generate a second speech made by a dialog system, based on a speech set in which three speeches are associated with one another, in response to a speech made by a human in response to a first speech made by the dialog system. A storage part of the acquisition system stores a plurality of speech sets in which two speeches are associated with each other and the acquisition method includes a presentation step of presenting in order, a speech t() and a speech t() which are two consecutive speeches included in a certain speech set stored in the storage part of the acquisition system, a speech receiving step of receiving input of a third speech t() which is a human speech after presenting the speech t() and a storing step of storing the speech t(), the speech t(), and the speech t() associated with one another as a speech set in which three speeches are associated with one another in the storage part of the acquisition system.

Acquisition method, generation method, system therefor and program for enabling a dialog between a computer and a human using natural language

A dialog method carried out by a dialog system includes an agent that performs a dialog with a user. The dialog method carried out by the dialog system includes a speech receiving step in which the dialog system receives input of a user speech which is a speech of the user, a first presentation step in which when the dialog system cannot obtain any recognition result of a desired level corresponding to the user speech, the dialog system presents a speech which does not include any content words as a first agent speech which is a speech of the agent uttered immediately after the user speech and a second speech step in which the dialog system presents a speech generated or selected not based on the user speech as a second agent speech which is a speech of an agent uttered after uttering the first agent speech.

Growing community of inventors

Soraku-gun, Japan

Hiroaki Sugiyama