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94 Socially Intelligent AgentsFigure 11.1.Overview of EgoChat systemeasier, we apply SIAs on these electronic communication media. Our methodfor supporting knowledge creation is based on human-style talking agents called“virtualized-egos” (VEs). A VE is one’s other self; it works independently ofone’s real self and can talk on one’s behalf. A VE compiles everyday e-mailsas an autobiographical memory that stores experiences of a community memberand generates a story from this memory. VEs work in our system calledEgoChat, which is a virtual environment for a conversation among humans andVEs with voices. With EgoChat, community members can exchange their experienceswith each other even if some members are absent because VEs cantalk on behalf of the absent members.2. Overview of EgoChatFigure 11.1(a) shows a screen shot of EgoChat. A user is talking with threeVEs, each of which has the 3-D head of another community member.Speeches of VEs are ordered as a story. In this research, we define a story as aseries of comments that represents relationships between community members.When we examine conversations in a mailing-list, we find that a members havingthe same interests are inclined to talk with one another. We therefore assumed