Abstract: Behavior model is one of key parts of virtual dragoman. The paper studies virtual dragoman’s behavior model based on features of dragoman’s behavior, and presents a behavior model consisting of perception machine, domain knowledge database and reasoning machine. Perception machine perceives environment, dragoman’s behavior rules are recorded in domain-knowledge database, and based on which reasoning machine performs behavior reasoning. The paper introduces the concept, the principle and the structure of perception machine, domain knowledge database and reasoning machine; and the method’s application in “Real-time roaming system of the ancient San He town” is also shown.

Key words: computer application, behavior model, domain knowledge, virtual dragoman, virtual tour