Characteristic adjusting method in process of manufacturing products

A characteristic adjusting method being included in a process of manufacturing products, a characteristic adjusting step for imparting a processing condition for controlling a characteristic being provided in a large number of manufacturing steps, the process of manufacturing products further having a characteristic inspecting step, via at least an another step, after the characteristic adjusting step, the characteristic adjusting method in the process of manufacturing products comprising:

• a data preparing stage for preparing a set of data for each product lot composed of
• intermediate characteristics obtained in each step before the characteristic adjusting step,
• a processing condition for controlling a characteristic imparted in the characteristic adjusting step, and
• a product characteristic in a characteristic inspecting step obtained on the basis of the intermediate characteristics and the processing condition for controlling a characteristic, at each moment;
• a model making stage for making a learning model expressing a causal relation when the intermediate characteristics and the processing condition for controlling a characteristic are inputted and the product characteristic is outputted by using the set of data prepared in the data preparing stage;
• and
• a model applying stage for retrieving the most appropriate processing condition for controlling a characteristic by using the intermediate characteristics in the previous steps before the characteristic adjusting step and the learning model made before, when the characteristic adjusting step is executed.