This paper deals with a new approach to formal representation and approximate reconfiguration of enterprise information system (EIS) based on object-based knowledge mesh (OKM) and information transfer relationship mesh (ITRM). To this end, new concepts of OKM and ITRM as well as their formal descriptions are proposed. Then, taking into consideration the approximation of modules in EIS, the reconfiguration element is defined, including its approximate matching degree. Furthermore, based on the operations of OKM and its approximate measurement, the formal representation method of information systems, reconfiguration algorithms based OKM and approximate matching, and mapping relationships between OKM and the information system, are explored. The rules in the reconfiguration and pre-processing rules are also studied. Finally, the approximate reconfiguration method based on OKM and ITRM is exemplified by the reconfiguration of the management information system (MIS) software used by an enterprise, which indicates the method to be very effective.
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