Interactive system and method of controlling same

摘要

Disclosed are an interactive system and method of controlling the same for achieving a task more efficiently. Items of data to be searched are stored in a memory (107) in a form classified according to prescribed classes, and a dialog controller (102) decides the order in which questions are presented to a user in order to narrow down the object of a search to data in a specific class. The questions are then presented to the user in the decided order by a question generator (103).