Abstract: It is an object to provide a parameter extraction method using a model equation having a physical meaning, in which parameters optimum for an element are extracted without setting appropriate initial values based on experience or deep understanding of models and actual device characteristics. A structure is provided in which multiple patterns of initial values of parameters are generated by a random number generator mechanism, and automatic parameter extraction is executed for each initial value to select a combination of parameters in which ultimate difference between a calculated value and a measured value is minimized thereby finding an optimal solution.

Abstract: A structure includes a step of inputting a numerical value of a parameter, which forms a model formula, by a computer; a step of inputting the numerical value of the parameter to the model formula and calculating a calculation value by the computer; and a step of evaluating degree of a match between an actual measurement value and the calculation value by the computer with an input/output response of an actual device assumed as the actual measurement value, in which the degree of the match is evaluated by a numerical value corresponding to an area of a portion sandwiched between a connecting line of the actual measurement value and a connecting line of the calculation value.

Abstract: It is an object to provide a parameter extraction method using a model equation having a physical meaning, in which parameters optimum for an element are extracted without setting appropriate initial values based on experience or deep understanding of models and actual device characteristics. A structure is provided in which multiple patterns of initial values of parameters are generated by a random number generator mechanism, and automatic parameter extraction is executed for each initial value to select a combination of parameters in which ultimate difference between a calculated value and a measured value is minimized thereby finding an optimal solution.

Abstract: A structure includes a step of inputting a numerical value of a parameter, which forms a model formula, by a computer; a step of inputting the numerical value of the parameter to the model formula and calculating a calculation value by the computer; and a step of evaluating degree of a match between an actual measurement value and the calculation value by the computer with an input/output response of an actual device assumed as the actual measurement value, in which the degree of the match is evaluated by a numerical value corresponding to an area of a portion sandwiched between a connecting line of the actual measurement value and a connecting line of the calculation value.