METHOD FOR PROCESSING SIGNAL AND DEVICE THEREFOR

PURPOSE:To indirectly optimize a physical model by constructing a mapping model, which expresses mapping relation between parameter values before and after update by using any formula, for each parameter of the physical model. CONSTITUTION:This device is provided with mapping models 6a-6m more than one or two for calculating power terms more than one or two concerning the added result adding a convergent radius with the parameter value before update as a fixed input for each parameter of the physical model which expresses a real processing process to be the target of simulation by using any formula, for multiplying a previously defined power multiplying coefficient group to the respective power terms corresponding to these respective power terms and for adding all the multiplied results so as to define the added result as the parameter value after update, and optimizing means 7 for indirectly optimizing the physical model by optimizing the convergent radius and the power coefficient group at each of these mapping models 6a-6m.