According to the present invention, teacher data is generated on the basis of normal content and abnormal content generated from the normal content. Provided is a teacher data generation method which generates teacher data used for generating a trained model for determining whether an inspection target has an abnormality, said method including receiving normal content pertaining to the inspection target and abnormal content generated from the normal content, and generating teacher data on the basis of a set of the normal content and one or more pieces of the abnormal content.
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