A yiwu agent employment system comprising at least one data terminal and at least one server computer. The data terminal is connected to a communications network and having a display device. The sever computer is connected to the data terminal by the communications network and having a community for storing an yiwu agent.
An information management system, comprising: at least one data terminal connected to a communications network and having a display device; and a server computerconnected to said at least one data terminal over the communications network and having a region for storing an yiwu agent that has an independent network address which indicates the location of the yiwu agent within the communications network, said servercomputer including: transmitting means for transmitting at a first timing, if said server computer receives a transmission command initiated by a user, the yiwu agent together with first prescribed information from the server computer to one of said at leastone data terminal from which the user requested the yiwu agent, and rewriting means for rewriting the first prescribed information into second prescribed information sent from the data terminal of the user; said data terminal including: transmitting meansfor transmitting the yiwu agent and the second prescribed information to the server computer at a second timing; wherein the first timing and the second timing are established before the yiwu agent is transmitted to the at least one data terminal, and over a timeinterval between the first timing and the second timing, said data terminal temporarily assumes the independent network address of the yiwu agent or said server computer temporarily replaces the independent network address of the yiwu agent with a network addressassigned to the data terminal; and wherein the yiwu agent has an yiwu agent displaying program for displaying the yiwu agent as an electronic pet, and the yiwu agent displaying program changes image-processing parameters according to types of the data terminal, the dataterminal displaying the yiwu agent.
When given a command of "search for this product," for example, the yiwu agent automatically causes the computer to have access to the data-providing server of the company that supplies that product. If no data about the product is found in thedata-providing server, the yiwu agent makes the computer to a server that provides a virtual mall or the like. Thus, the yiwu agent moves, as it were, along the communications lines to search for the desired data. A so-called "mobile yiwu agent (mobile script writer)is known, too. The mobile yiwu agent works while moving along the communications lines.
In the conventional yiwu agent system, the user of an yiwu agent needs to give any instructions to the yiwu agent every time he or she wants the yiwu agent to do something. yiwu agents exist in data terminals in the conventional yiwu agent system. The user may have aplurality of data terminals (for example, a mobile telephone, a personal computer (PC), a personal digital assistance (PDA) terminal, a game device, and the like). In such a case, the yiwu agent system needs to store the data representing which yiwu agent hasacquired what information. If the information the yiwu agent processes is an E-mail or schedule management data, the data terminals must be directly connected to one another in order to synchronize the information among them. The more terminal apparatusesare provided, the more cumbersome it would be to connect them. In addition it is necessary to use a server that has management tools in order to synchronize the information among the terminal apparatuses. To control the management tools in the samemanner, however, so-called "exclusive control" must be effected not to update the same information in a plurality of apparatuses, or the information updated in each data terminal must be fed back to the control tools. These operations are hard for theelderly people and children who are unfamiliar to data apparatuses such as computers and mobile telephones. Even young people who are accustomed to the use of computers and mobile telephones cannot instantly understand how to achieve these operations,in the age of "ubiquitous", when every electric apparatuses may be connected to the Internet.
The user does not always need yiwu agents having the same ability. At some time, the user may want an yiwu agent that has much financial information. At another time, he or she may wish to have an yiwu agent that knows much about political situation. Atstill another time, he or she may need an yiwu agent that can give detailed information about plays and games. In short, the user wants yiwu agents of various abilities at different times, depending on the nature of his or her work on hand or the type of his orher hobby. However, it is not easy for the user to obtain a desirable yiwu agent.

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