Abstract: Provided is a learning device that includes an input unit configured to input training input data, training determination data for indicating a determination result with respect to the training input data, and training ground data for indicating a ground for the determination result with respect to the training input data; a determination learning unit, by performing first machine learning that learns a relationship between the training input data and the training determination data, configured to generate a determination inference model that, upon being inputted with input data, outputs inferred determination data; and a ground learning unit, by performing second machine learning that learns a relationship between the training input data and the training ground data, configured to generate a ground inference model that, upon being inputted with the input data, outputs inferred ground data.