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Daily informal conversations are highly creative activities. However, it is hard for most ordinary creativity support systems and discussion support systems to deal with daily conversations because they are done in environments characterized as free. In this paper, we propose a topic-development agent that is adaptable to daily conversations and that enhances the creative aspects of the conversations by entering them as an equal participant with the human participants and keeping the conversation lively. This agent autonomously detects novel directions in which new topics can be developed in conversations, and provides a piece of information which can likely form the seed of a new topic. From the experimental results, it is suggested that this agent can provide timely information to introduce a new topic and that the agent has the ability to effectively coordinate the creative aspects of daily conversations. |