Learning device, learning method, and storage medium

A learning method comprising, by a computer:

• acquiring real data;
• generating pseudo data of the same type as the real data using a first neural network;
• performing a first identification process of identifying whether input data which is the real data or the pseudo data is the acquired real data or the generated pseudo data;
• extracting features of data from the input data;
• performing a second identification process of identifying whether the extracted features are features of the acquired real data or features of the generated pseudo data;
• and
• learning the first neural network such that the pseudo data and the real data are not discriminated by the first identification process and the second identification process on the basis of identification results of the first identification process and the second identification process.

A non-transitory computer-readable storage medium storing a program for causing a computer:

• to acquire real data;
• to generate pseudo data of the same type as the real data using a first neural network;
• to perform a first identification process of identifying whether input data which is the real data or the pseudo data is the acquired real data or the generated pseudo data;
• to extract features of data from the input data;
• to perform a second identification process of identifying whether the extracted features are features of the acquired real data or features of the generated pseudo data;
• and
• to learn the first neural network such that the pseudo data and the real data are not discriminated by the first identification process and the second identification process on the basis of identification results of the first identification process and the second identification process.