Patent US 6,285,977

A multi-agent cooperating system and method which is capable of being applied to a plurality of users with a simple composition and of performing efficient processing. The system comprises an agent group composed of a plurality of agents for providing services to the user, a user definition storing section for storing personal information such as user preferences for the options when requesting a service, and a user agent for converting the request from the user into an appropriate form with reference to the contents in the user definition storing section and transmitting them to the agent group, or transmitting the value of the attributes of the user with reference to the user definition storing section when user characteristics are requested from the agent group. The user agents are coupled to the agent group corresponding to each user.