Autonomous node reallocation for achieving load balance under changing users´ preference

In order to meet the heterogeneous requirements from service providers and users simultaneously, there is an urgent need for a new information service system. After studying the characteristics of the user´s access, it can be said that popularity of information utilization generally exists in information system. This paper introduces an access-based rating oriented distributed information system sustained by push/pull mobile agents for information service provision and utilization. In this environment, autonomous node adjustment technology is proposed to achieve load balance in the situation of changing users´ preference. The effectiveness of our proposed technology is proved by simulation.